CN104219673A - Network expansion method and system - Google Patents
Network expansion method and system Download PDFInfo
- Publication number
- CN104219673A CN104219673A CN201310208225.1A CN201310208225A CN104219673A CN 104219673 A CN104219673 A CN 104219673A CN 201310208225 A CN201310208225 A CN 201310208225A CN 104219673 A CN104219673 A CN 104219673A
- Authority
- CN
- China
- Prior art keywords
- angle
- sector
- declination
- antenna parameter
- network capacity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Mobile Radio Communication Systems (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a network expansion method and system. The method comprises the following steps: measuring the wireless resource load of a cell; judging whether the wireless resource load satisfies an expansion condition or not, and keeping an original cell structure and parameter configuration if the wireless resource load does not satisfy the expansion condition; and if the wireless resource load satisfies the expansion condition, adjusting antenna parameters, and acquiring the amplitude and phase of a vibrator according to the antenna parameters, wherein the antenna parameters comprise a downward inclination angle, a horizontal lobe angle and a vertical lobe angle in order to perform sector splitting. Sectorization and parameter adjustment are performed on an active antenna in a self-adaptive manner, so that the network capacity is increased.
Description
Technical field
The invention belongs to the cellular mobile communication technology network planning and optimize field, particularly relate to network capacity extension method and system.
Background technology
Along with the develop rapidly of mobile Internet and intelligent terminal, the demand of user to data service is increasing.When business has grown beyond networking preconsolidation stress target, need to promote network capacity by the network capacity extension.
Traditional network capacity extension method has to be increased base station method and increases existing Base Station Compatibility method two kinds.
Increase base station method and need independent site, supporting and transfer resource, cost is higher, and in today that site resource is more and more rare, difficulty is larger.
Increase existing Base Station Compatibility mainly to be realized by increase carrier wave, the mode such as transmitting power, cell splitting that increases.But above-mentioned several mode has a common shortcoming, be exactly that the burst of business and dynamic characteristic make the resource utilization of system idle after dilatation often lower, cause waste.To illustrate one by one this several major way below.
LTE(Long Term Evolution, Long Term Evolution) frequency range of network is wider, and the dilatation way of traditional increase carrier wave is no longer applicable in the LTE epoch;
The mode increasing transmitting power needs to change the hardware such as power amplifier, increase cost, and the interference brought in dense city is larger;
The mode of cell splitting, needs while main equipment dilatation, increases RRU(Remote Radio Unit, remote radio unit (RRU)) and antenna amount, cost is high, and difficulty of construction is larger.
Summary of the invention
In view of more than, the present invention proposes network capacity extension method and system, to increase network capacity.
According to an aspect of the present invention, propose network capacity extension method, comprising:
Measure the Radio Resource load of community;
Judge whether Radio Resource load meets dilatation condition, if Radio Resource load does not meet dilatation condition, then keep original cell structure and parameter configuration;
If Radio Resource load meets dilatation condition, then adjust antenna parameter, and obtain amplitude and the phase place of oscillator according to antenna parameter, antenna parameter comprises angle of declination, horizontal field angle and vertical lobe angle, to carry out sector division.
In one embodiment of this invention, described network capacity extension method, sector division comprises vertical sector division, is specially:
Measure user location distribution situation;
Calculate angle of declination according to user location distribution situation, horizontal field angle remains unchanged, and vertical lobe angle and sector initialization are consistent;
According to horizontal field angle, vertical lobe angle and angle of declination, in multiple setting, select the antenna parameter mated;
Amplitude and the phase place of oscillator is obtained according to antenna parameter.
In one embodiment of this invention, described network capacity extension method, calculates angle of declination according to user location distribution situation, is specially:
When being vertically split into inside and outside two sectors, outer sector and interior sector angle of declination are respectively α 1, α 2, then α 1 ≈ arctan (H/R), α 2 ≈ arctan (H/r), wherein, R is radius of society, H is base station height, and r is the radius at the user place of setting ratio.
In one embodiment of this invention, described network capacity extension method, sector division comprises horizontal sector division, is specially:
When horizontal split is two sectors, half when horizontal field angle is initial sector, vertical lobe angle remains unchanged, and angle of declination is constant;
According to horizontal field angle, vertical lobe angle and angle of declination, in multiple setting, select the antenna parameter mated;
Amplitude and the phase place of oscillator is obtained according to antenna parameter.
In one embodiment of this invention, described network capacity extension method, Radio Resource load comprises the resource utilization of Physical Resource Block, community excited user number and/or cell throughout;
Dilatation condition comprise wireless network resource utilance continue for some time be greater than wireless network resource utilance set point, community excited user number is greater than community excited user number set point and/or cell throughout is greater than cell throughout set point.
In one embodiment of this invention, described network capacity extension method, when system idle, adjustment antenna parameter, is obtained amplitude and the phase place of oscillator, is covered by single sector according to antenna parameter.
According to a further aspect in the invention, also propose network capacity extension system, comprising:
Base Band Unit, measures the Radio Resource load of community; Judge whether Radio Resource load meets dilatation condition, if Radio Resource load does not meet dilatation condition, then keep original cell structure and parameter configuration; If Radio Resource load meets dilatation condition, then judged result is input to Digital Signal Processing controller by common radio-frequency interface;
Digital Signal Processing controller, when Radio Resource load meets dilatation condition, adjustment antenna parameter, and the amplitude and the phase place that obtain oscillator according to antenna parameter, antenna parameter comprises angle of declination, horizontal field angle and vertical lobe angle, to carry out sector division.
In one embodiment of this invention, described network capacity extension system, sector division comprises vertical sector division, is specially:
Measure user location distribution situation;
Calculate angle of declination according to user location distribution situation, horizontal field angle remains unchanged, and vertical lobe angle and sector initialization are consistent;
According to horizontal field angle, vertical lobe angle and angle of declination, in multiple setting, select the antenna parameter mated;
Amplitude and the phase place of oscillator is obtained according to antenna parameter.
In one embodiment of this invention, described network capacity extension system, calculates angle of declination according to user location distribution situation, is specially:
When being vertically split into inside and outside two sectors, outer sector and interior sector angle of declination are respectively α 1, α 2, then α 1 ≈ arctan (H/R), α 2 ≈ arctan (H/r), wherein, R is radius of society, H is base station height, and r is the radius at the user place of setting ratio.
In one embodiment of this invention, described network capacity extension system, sector division comprises horizontal sector division, is specially:
When horizontal split is two sectors, half when horizontal field angle is initial sector, vertical lobe angle remains unchanged, and angle of declination is constant;
According to horizontal field angle, vertical lobe angle and angle of declination, in multiple setting, select the antenna parameter mated;
Amplitude and the phase place of oscillator is obtained according to antenna parameter.
In one embodiment of this invention, described network capacity extension system, Radio Resource load comprises the resource utilization of Physical Resource Block, community excited user number and/or cell throughout;
Dilatation condition comprise wireless network resource utilance continue for some time be greater than wireless network resource utilance set point, community excited user number is greater than community excited user number set point and/or cell throughout is greater than cell throughout set point.
In one embodiment of this invention, described network capacity extension system, when system idle, Digital Signal Processing controller adjustment antenna parameter, is obtained amplitude and the phase place of oscillator, is covered by single sector according to antenna parameter.
The present invention adaptively can carry out sector division and parameter adjustment to active antenna, promotes network capacity.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms a part of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Figure 1 shows that the structure principle chart of the network capacity extension system in one embodiment of the invention.
Figure 2 shows that the network capacity extension method flow diagram in one embodiment of the invention.
Figure 3 shows that the method flow diagram of horizontal sector division in one embodiment of the invention.
Figure 4 shows that the method flow diagram of vertical sector division in one embodiment of the invention.
Figure 5 shows that the method schematic diagram calculating angle of declination in one embodiment of the invention in the division of vertical sector.
Figure 6 shows that the sector schematic diagram after vertical division in one embodiment of the invention.
Embodiment
Various exemplary embodiment of the present invention is described in detail now with reference to accompanying drawing.It should be noted that: unless specifically stated otherwise, otherwise the positioned opposite and numerical value of the parts of setting forth in these embodiments and step does not limit the scope of the invention.
Meanwhile, it should be understood that for convenience of description, the size of the various piece shown in accompanying drawing is not draw according to the proportionate relationship of reality.
Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the present invention and application or use.
May not discuss in detail for the known technology of person of ordinary skill in the relevant, method and apparatus, but in the appropriate case, described technology, method and apparatus should be regarded as a part of authorizing specification.
In all examples with discussing shown here, any occurrence should be construed as merely exemplary, instead of as restriction.Therefore, other example of exemplary embodiment can have different values.
It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to be further discussed it in accompanying drawing subsequently.
Active antenna is the new base station architecture of future generation after distributed base station, is one of Main way of following LTE technology.The radio frequency part of base station is integrated into inner antenna by active antenna, and adopt multichannel radio frequency and antenna oscillator to coordinate, implementation space wave beam forming, completes the transmitting-receiving of radiofrequency signal.Add the framework of passive antenna relative to traditional RRU, active antenna integrated level is high, is easy to install, and reduces engineering cost, simplifies terrace, and connects the sensitivity improving transmitting power and receiver without feeder line, promotes the network coverage.
Figure 1 shows that the structure principle chart of the network capacity extension system in one embodiment of the invention.
In Fig. 1, empty frame inside, left side is active antenna, and active antenna comprises antenna oscillator, Digital Signal Processing controller and common radio-frequency interface.In Active Antenna Configurations, the behind of each antenna oscillator directly connects distributed miniature Transmit-Receive Unit.As shown in right side in Fig. 1, miniature Transmit-Receive Unit comprises Digital up and down convert device, digital to analog converter, analog to digital converter, power amplifier, LNA and duplexer.
As shown in Figure 1, Base Band Unit is connected with active antenna by common radio-frequency interface with network management unit, and the base band data of Base Band Unit and the network management data of network management unit are transferred to Digital Signal Processing controller by common radio-frequency interface.In network management unit, preserve the amplitude of antenna parameter and oscillator and the corresponding relation of phase place, antenna parameter comprises Downtilt, horizontal field angle, vertical lobe angle and antenna gain etc.The amplitude of antenna parameter and oscillator and the corresponding relation of phase place, such as, several oscillator forms which type of horizontal directivity pattern, height pattern according to what amplitude, Phase Stacking, and corresponding angle of declination is how many.When building a station for the first time, the Downtilt that Cover treatment regional population is corresponding, field angle and antenna gain are different.Covering area type comprises dense city, city, suburb, rural area etc.In general, city Downtilt is large, field angle is narrow, gain is little; Suburb rural angle of declination is little, lobe angular width, gain are large.Such as, after building a station in the LTE active antenna base station of 2.6GHz, the Downtilt of covering area type corresponding to dense city is 10 degree, horizontal field angle is 65 degree, vertical lobe angle is 10 degree, antenna gain is 17dBi.During the initialization of sector, network management unit sends the amplitude of the oscillator of antenna parameter and correspondence and phase place to Digital Signal Processing controller, Digital Signal Processing controller directly can obtain amplitude and the phase place of oscillator, or, amplitude and phase place is calculated according to antenna parameter, to obtain amplitude and the phase place of oscillator, the amplitude of each oscillator and phase place are sent to miniature Transmit-Receive Unit by bus.
Miniature Transmit-Receive Unit carries out the operations such as follow-up Up/Down Conversion, digital to analog conversion according to corresponding setting, and final radio frequency signal generation is launched by antenna oscillator, forms antenna pattern, covers community.Can obtain antenna pattern by separating Maxwell equation, current most of algorithm realizes, as group's particle optimized algorithm (one of genetic algorithm), simulated annealing etc. based on the upgrade algorithm of genetic algorithm.
Active antenna can carry out adjustment separately to the amplitude of each oscillator and phase place and form wave beam, to carry out MPS process.Prior art can form single wave beam or multiple wave beam, but adaptively can not carry out sector adjustment, also namely or be a sector, or is multiple sectors, remains unchanged.Like this, if be a sector, then cannot increase network capacity by being split into multiple sector; If be many sectors, even if then system idle is also cover with many sectors, resource utilization is low.
The mode that the present invention is divided by self adaptation sector, when system meets dilatation condition, carries out sector division, and can control beam position, realizes wave beam flexibly and controls, thus after the division of sector, make Radio Resource can be multiplexing, increase network capacity.When system idle then covers with single sector, relative to the mode covered with many sectors, resource utilization is high.
Below with reference to accompanying drawings, the network capacity extension system in one embodiment of the invention is described in detail.
Base Band Unit measures the Radio Resource load of community, judges whether Radio Resource load meets dilatation condition, if Radio Resource load does not meet dilatation condition, then Base Band Unit does not need to send judged result, that is, keep original cell structure and parameter configuration.If Radio Resource load meets dilatation condition, then judged result is input to Digital Signal Processing controller by common radio-frequency interface.
In one embodiment of this invention, Base Band Unit also measures user location distribution situation.
The measuring intervals of TIME of Radio Resource load and user location distribution situation can be self-defined.The measuring intervals of TIME of Radio Resource load can be consistent with the measuring intervals of TIME of user location distribution situation, also can be inconsistent.Radio Resource load, such as, PRB(Physical Resource Block, Physical Resource Block) resource utilization, community excited user number and/or cell throughout etc.In one embodiment, the PRB resource utilization of this community measured by LTE active antenna every 1 minute.Base station utilizes OTDOA(Observed Time Difference of Arrival, observable arrives time difference) or GPS(Global Position System, global positioning system) location technology positions customer location, to obtain user location distribution situation.
Wireless network dilatation condition can customize, such as, wireless network resource utilance continue for some time be greater than wireless network resource utilance set point, community excited user number is greater than community excited user number set point and/or cell throughout is greater than cell throughout set point etc.
Digital Signal Processing controller is when Radio Resource load meets dilatation condition, and adjustment antenna parameter, and the amplitude and the phase place that obtain oscillator according to antenna parameter, to carry out sector division.
Be split into the hardware configuration of several sector and active antenna, software algorithm etc. and all have relation.Specifically, hardware configuration determines the sector number that maximum possible divides, the oscillator number in hardware configuration such as active antenna and element spacing.Because each independently oscillator can both form a wave beam, but wave beam is very wide, substantially exceeds the scope of community, and after multiple oscillator superposition, wave beam can narrow, and gain becomes large, specifically how narrow oscillator number and the element spacing depending on superposition.Generally determine to need the superposition of several oscillator according to the shape intending coverage cell.Therefore, need to consider the oscillator number in active antenna, intend the shape, antenna gain etc. of coverage cell.
The sector division that the present invention carries out comprises vertical sector division and horizontal sector division.
In one embodiment of this invention, horizontal sector divides, and be specially: when horizontal split is two sectors, half when horizontal field angle is initial sector, vertical lobe angle remains unchanged, and angle of declination is constant; According to horizontal field angle, vertical lobe angle and angle of declination, in multiple setting, select the antenna parameter mated; Amplitude and the phase place of oscillator is obtained according to antenna parameter.
In one embodiment of this invention, vertical sector divides, and is specially: measure user location distribution situation; Calculate angle of declination according to user location distribution situation, horizontal field angle remains unchanged, and vertical lobe angle and sector initialization are consistent or become smaller; According to horizontal field angle, vertical lobe angle and angle of declination, in multiple setting, select the antenna parameter mated; Amplitude and the phase place of oscillator is obtained according to antenna parameter.
In the embodiment that the division of above-mentioned vertical sector and horizontal sector are divided, according to horizontal field angle, vertical lobe angle and angle of declination, in multiple setting, select the antenna parameter mated, refer to consistent with horizontal field angle, vertical lobe angle and angle of declination in the antenna parameter preserved in network management unit or immediate parameters.Due to the corresponding relation of the amplitude and phase place that save antenna parameter and oscillator in network management unit, and, send the amplitude of the oscillator of antenna parameter and correspondence and phase place to Digital Signal Processing controller, Digital Signal Processing controller directly can obtain amplitude and the phase place of oscillator, or, after calculating according to antenna parameter, obtain amplitude and the phase place of oscillator.
In one embodiment of this invention, be vertically split into 2 sectors for the LTE active antenna of vertical many arrays to be described.But it will be understood by those skilled in the art that principle involved in the present invention and method are not limited to the vertical division of vertical many arrays LTE active antenna, also can carry out horizontal split, or carry out horizontal split and vertical division simultaneously.In addition, the present invention is also not limited to be split into 2 sectors, and the sector number of division also can more than 2.Corresponding deformation carried out accordingly and amendment, within the protection range that all should cover this claim.
When being vertically split into inside and outside two sectors, be respectively sector 1 and sector 2.Angle of declination is calculated according to user location distribution situation, horizontal directivity pattern remains unchanged, according to inside and outside sector angle of declination, and close to initialized vertical lobe angle, many groups that preserve from network management unit arrange in select immediate 2 groups of antenna parameters, and the corresponding relation of antenna parameter and amplitude and phase place is transferred to Digital Signal Processing controller by common radio-frequency interface.Digital Signal Processing controller carries out the amplitude of oscillator and the setting of phase place after obtaining amplitude and phase place, and final two sectors forming vertical division, to cover community.
Such as, there is user's difference integrated distribution in residential building and office building, when network capacity can not satisfy the demands, need to carry out vertical sector division.Calculate the angle of declination of inside and outside sector according to user location distribution situation, calculate the amplitude of each oscillator and phase place by Digital Signal Processing controller and arrange.
Be described to the process calculating angle of declination in one embodiment of the invention below.This embodiment is described to be vertically split into 2 sectors.But it will be understood by those skilled in the art that above-mentioned just for citing, should not be construed as limitation of the present invention.
When being vertically split into inside and outside two sectors, outer sector and interior sector angle of declination are respectively α 1, α 2, α 1 ≈ arctan (H/R), α 2 ≈ arctan (H/r).Suppose that radius of society is R, base station height is H, number of users to be N, N be more than or equal to 1 integer.R is the radius at the user place of setting ratio.
After base station utilizes location technology to position customer location, the distance of each user distance base station is known in base station, with the distance of user distance base station for stochastic variable, this stochastic variable is added up, draw CDF(Cumulative Distribution Function, Cumulative Distribution Function) curve.
In this embodiment, getting 50% user place radius is r.In CDF curve, transverse axis is the distance R(unit rice of user distance base station), the longitudinal axis is probability (unit percentage), and from curve, the transverse axis distance of the longitudinal axis 50% correspondence directly can find out the radius r at 50% user place.In the present embodiment, Internal and external cycle is by 50% user place radius definition, that is, r represents the radius at the user place of setting ratio.User is divided into two parts, uses two MPS process respectively.The ratio of setting 50% considers that the traffic carrying capacity of each user is uniformly distributed, and after carrying out sector division according to general user position like this, the capacity of Liang Ge community is substantially suitable.Certainly, 50% ratio can be changed, and is an exemplary illustration in the present embodiment.
Operating time increases due to user in office building, if in continuous 30 minutes, PRB resource utilization >=70%, then prepare to carry out vertical sector division.Base station side is according to intra-cell users position distribution situation, and re-start angle of declination and calculate, computing formula is as follows:
Suppose that outer sector and interior sector angle of declination are respectively α 1, α 2, then α 1 ≈ arctan (H/R), α 2 ≈ arctan (H/r).Wherein, α 1, α 2 are actually angle of declination and deduct (vertical lobe angle/2), consider that vertical lobe angle is smaller, and simplify and calculate, then remove vertical lobe angle, formula becomes about equal sign.In the present embodiment, R=300m, r=100m, H=35m, then outer sector angle of declination α 1=7 °, interior sector angle of declination α 2=19 °.
In another embodiment of the invention, also adjusted by the internal fan antenna directional diagram of null-fill technology, more even to ensure interior MPS process.Null-fill refers to that the secondary lobe first zero under the vertical beam of fill antenna, makes its gain be greater than-20dB by changing the amplitude of antenna oscillator and phase place, reduces coverage hole, makes the radiation of antenna more even.
In one embodiment of this invention, when system idle, Digital Signal Processing controller adjustment antenna parameter, is obtained amplitude and the phase place of oscillator, is covered by single sector according to antenna parameter.
The present invention can dynamically carry out sectorization dilatation and network parameter adjustment according to Radio Resource load, and realize the intellectuality of radio network optimization, the business demand of better laminating dynamic change and wireless environment, promote network capacity and covering power.For the dilatation way that existing main equipment adds passive antenna, hardware does not need newly-increased base station or community, and after adaptive sectorization, if the system spare time, do not carry out sector division, such system is in high usage state always.
Figure 2 shows that the network capacity extension method flow diagram in one embodiment of the invention.The method comprises the steps:
Step 201, measures the Radio Resource load of community.
In one embodiment of this invention, user location distribution situation can also be measured in this step.
Step 202, judges whether Radio Resource load meets dilatation condition, if Radio Resource load does not meet dilatation condition, then performs step 203, otherwise, perform step 204.
Step 203, keeps original cell structure and parameter configuration.
Step 204, adjustment antenna parameter, and the amplitude and the phase place that obtain oscillator according to antenna parameter, antenna parameter comprises angle of declination, horizontal field angle and vertical lobe angle, to carry out sector division.
Figure 3 shows that the method flow diagram of horizontal sector division in one embodiment of the invention.
Step 201 ~ step 203 is consistent with said method flow process.In step 204, sector division comprises horizontal sector division, comprises the following steps:
Step 301, when horizontal split is two sectors, half when horizontal field angle is initial sector, vertical lobe angle remains unchanged, and angle of declination is constant.
Step 302, according to horizontal field angle, vertical lobe angle and angle of declination, selects the antenna parameter mated in multiple setting.
Step 303, obtains amplitude and the phase place of oscillator according to antenna parameter.
Figure 4 shows that the method flow diagram of vertical sector division in one embodiment of the invention.
Step 201 ~ step 203 is consistent with said method flow process.In step 204, sector division comprises vertical sector division, comprises the following steps:
Step 401, measures user location distribution situation.
Step 402, calculate angle of declination according to user location distribution situation, horizontal field angle remains unchanged, and vertical lobe angle and sector initialization are consistent.
Step 403, according to horizontal field angle, vertical lobe angle and angle of declination, selects the antenna parameter mated in multiple setting.
Step 404, obtains amplitude and the phase place of oscillator according to antenna parameter.
Figure 5 shows that the method schematic diagram calculating angle of declination in one embodiment of the invention in the division of vertical sector.
When being vertically split into inside and outside two sectors, outer sector and interior sector angle of declination are respectively α 1, α 2, then α 1 ≈ arctan (H/R), α 2 ≈ arctan (H/r), wherein, R is radius of society, H is base station height, and r is the radius at the user place of setting ratio.
In this embodiment, be vertically split into 2 sectors for the LTE active antenna of vertical many arrays and be described.But it will be understood by those skilled in the art that above-mentioned just for citing, should not be construed as limitation of the present invention.
In another embodiment of the invention, also adjusted by the internal fan antenna directional diagram of null-fill technology, more even to ensure interior MPS process.Null-fill refers to that the secondary lobe first zero under the vertical beam of fill antenna, makes its gain be greater than-20dB by changing the amplitude of antenna oscillator and phase place, reduces coverage hole, makes the radiation of antenna more even.
In one embodiment of this invention, when system idle, adjustment antenna parameter, is obtained amplitude and the phase place of oscillator, is covered by single sector according to antenna parameter.
The present invention can measure the Radio Resource load of active antenna in real time, dynamically carries out adaptive sectorization and parameter adjustment, to realize wireless network intelligent optimization.
Figure 6 shows that the sector schematic diagram after vertical division in one embodiment of the invention.
Below with reference to Fig. 6 and specific embodiment, the process of the present invention being carried out to sector division is described in detail.
For the active antenna of vertical arrangement in Fig. 1.Have 2 row, represent+45 degree and-45 degree two polarised directions, often row 8 oscillators respectively.By adjusting the amplitude of each oscillator and phase place, forming a wave beam, covering whole community.
Active antenna can carry out vertical sector division, split into inside and outside two sectors after adopting many oscillators to arrange in vertical direction.Suppose that active antenna base station near point has office building, far point has residential building, and in office building, number of users is more the operating time, and non-working time number of users is less, belongs to typical user's tidal distribution.Non-working time, in office building, number of users reduces, and does not meet wireless network dilatation condition, then continue to keep original cell structure and parameter configuration.When single sector can not meet the capacity requirement of office building and residential building in overlay area, can by carrying out vertical sector division to the amplitude of oscillator and phase place adjustment, form two vertical beams, original cell coverage area is split into inner ring and Liang Ge sector, outer ring, to increase network capacity, as shown in Figure 6.In Fig. 6, inner ring is blank parts, represents the sector covering office building; In Fig. 6, outer ring is the part of grid representation, represents the sector covering residential building.Original 1 sector is split into 2 sectors by this embodiment, and each sector needs an antenna pattern and covers.Sector after division makes Radio Resource can be multiplexing, thus adds network capacity.
The present invention is based on the correlation technique principle of the adaptive sectorization of active antenna and parameter adjustment, scheme and device, not only be confined to the wireless network parameter optimization such as vertical sector division, angle of declination, antenna pattern related to herein, can suitably increase and decrease.The present invention can according to the busy situation of network, adaptively carries out sectorization and parameter adjustment to active antenna, promotes network capacity, reduces site resource, realizes wireless network green energy conservation and the network optimization is intelligent.
So far, the present invention is described in detail.In order to avoid covering design of the present invention, details more known in the field are not described.Those skilled in the art, according to description above, can understand how to implement technical scheme disclosed herein completely.
Method of the present invention and device may be realized in many ways.Such as, any combination by software, hardware, firmware or software, hardware, firmware realizes method of the present invention and device.Said sequence for the step of described method is only to be described, and the step of method of the present invention is not limited to above specifically described order, unless specifically stated otherwise.In addition, in certain embodiments, can be also record program in the recording medium by the invention process, these programs comprise the machine readable instructions for realizing according to method of the present invention.Thus, the present invention also covers the recording medium stored for performing the program according to method of the present invention.
Although be described in detail specific embodiments more of the present invention by example, it should be appreciated by those skilled in the art, above example is only to be described, instead of in order to limit the scope of the invention.It should be appreciated by those skilled in the art, can without departing from the scope and spirit of the present invention, above embodiment be modified.Scope of the present invention is limited by claims.
Claims (12)
1. network capacity extension method, is characterized in that:
Measure the Radio Resource load of community;
Judge whether Radio Resource load meets dilatation condition, if Radio Resource load does not meet dilatation condition, then keep original cell structure and parameter configuration;
If Radio Resource load meets dilatation condition, then adjust antenna parameter, and obtain amplitude and the phase place of oscillator according to antenna parameter, antenna parameter comprises angle of declination, horizontal field angle and vertical lobe angle, to carry out sector division.
2. network capacity extension method as claimed in claim 1, is characterized in that:
Sector division comprises vertical sector division, is specially:
Measure user location distribution situation;
Calculate angle of declination according to user location distribution situation, horizontal field angle remains unchanged, and vertical lobe angle and sector initialization are consistent;
According to horizontal field angle, vertical lobe angle and angle of declination, in multiple setting, select the antenna parameter mated;
Amplitude and the phase place of oscillator is obtained according to antenna parameter.
3. network capacity extension method as claimed in claim 2, is characterized in that:
Calculate angle of declination according to user location distribution situation, be specially:
When being vertically split into inside and outside two sectors, outer sector and interior sector angle of declination are respectively α 1, α 2, then α 1 ≈ arctan (H/R), α 2 ≈ arrtan (H/r), wherein, R is radius of society, H is base station height, and r is the radius at the user place of setting ratio.
4. network capacity extension method as claimed in claim 1, is characterized in that:
Sector division comprises horizontal sector division, is specially:
When horizontal split is two sectors, half when horizontal field angle is initial sector, vertical lobe angle remains unchanged, and angle of declination is constant;
According to horizontal field angle, vertical lobe angle and angle of declination, in multiple setting, select the antenna parameter mated;
Amplitude and the phase place of oscillator is obtained according to antenna parameter.
5., as the network capacity extension method as described in arbitrary in Claims 1-4, it is characterized in that:
Radio Resource load comprises the resource utilization of Physical Resource Block, community excited user number and/or cell throughout;
Dilatation condition comprise wireless network resource utilance continue for some time be greater than wireless network resource utilance set point, community excited user number is greater than community excited user number set point and/or cell throughout is greater than cell throughout set point.
6., as the network capacity extension method as described in arbitrary in Claims 1-4, it is characterized in that:
When system idle, adjustment antenna parameter, is obtained amplitude and the phase place of oscillator, is covered by single sector according to antenna parameter.
7. network capacity extension system, is characterized in that, comprising:
Base Band Unit, measures the Radio Resource load of community; Judge whether Radio Resource load meets dilatation condition, if Radio Resource load does not meet dilatation condition, then keep original cell structure and parameter configuration; If Radio Resource load meets dilatation condition, then judged result is input to Digital Signal Processing controller by common radio-frequency interface;
Digital Signal Processing controller, when Radio Resource load meets dilatation condition, adjustment antenna parameter, and the amplitude and the phase place that obtain oscillator according to antenna parameter, antenna parameter comprises angle of declination, horizontal field angle and vertical lobe angle, to carry out sector division.
8. network capacity extension system as claimed in claim 7, is characterized in that:
Sector division comprises vertical sector division, is specially:
Measure user location distribution situation;
Calculate angle of declination according to user location distribution situation, horizontal field angle remains unchanged, and vertical lobe angle and sector initialization are consistent;
According to horizontal field angle, vertical lobe angle and angle of declination, in multiple setting, select the antenna parameter mated;
Amplitude and the phase place of oscillator is obtained according to antenna parameter.
9. network capacity extension system as claimed in claim 8, is characterized in that:
Calculate angle of declination according to user location distribution situation, be specially:
When being vertically split into inside and outside two sectors, outer sector and interior sector angle of declination are respectively α 1, α 2, then α 1 ≈ arctan (H/R), α 2 ≈ arctan (H/r), wherein, R is radius of society, H is base station height, and r is the radius at the user place of setting ratio.
10. network capacity extension system as claimed in claim 7, is characterized in that:
Sector division comprises horizontal sector division, is specially:
When horizontal split is two sectors, half when horizontal field angle is initial sector, vertical lobe angle remains unchanged, and angle of declination is constant;
According to horizontal field angle, vertical lobe angle and angle of declination, in multiple setting, select the antenna parameter mated;
Amplitude and the phase place of oscillator is obtained according to antenna parameter.
11., as the network capacity extension system as described in arbitrary in claim 7 to 10, is characterized in that: Radio Resource load comprises the resource utilization of Physical Resource Block, community excited user number and/or cell throughout;
Dilatation condition comprise wireless network resource utilance continue for some time be greater than wireless network resource utilance set point, community excited user number is greater than community excited user number set point and/or cell throughout is greater than cell throughout set point.
12., as the network capacity extension system as described in arbitrary in claim 7 to 10, is characterized in that:
When system idle, Digital Signal Processing controller adjustment antenna parameter, is obtained amplitude and the phase place of oscillator, is covered by single sector according to antenna parameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310208225.1A CN104219673B (en) | 2013-05-30 | 2013-05-30 | Network capacity extension method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310208225.1A CN104219673B (en) | 2013-05-30 | 2013-05-30 | Network capacity extension method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104219673A true CN104219673A (en) | 2014-12-17 |
| CN104219673B CN104219673B (en) | 2018-04-06 |
Family
ID=52100733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310208225.1A Active CN104219673B (en) | 2013-05-30 | 2013-05-30 | Network capacity extension method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104219673B (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105407486A (en) * | 2015-12-02 | 2016-03-16 | 中国联合网络通信集团有限公司 | Network expansion method and device |
| CN105828348A (en) * | 2015-01-04 | 2016-08-03 | 中国联合网络通信集团有限公司 | Three-dimensional cell splitting method and three-dimensional cell splitting device |
| CN105992228A (en) * | 2015-01-29 | 2016-10-05 | 中国移动通信集团浙江有限公司 | Wireless network capacity expansion method and device and electronic device |
| CN106452528A (en) * | 2016-09-14 | 2017-02-22 | 西安交通大学 | System downlink transmission rate increase method of sector vertical cracking in 3D-MIMO system |
| CN106686609A (en) * | 2016-11-23 | 2017-05-17 | 中国联合网络通信集团有限公司 | Method and device of expanding network capacity |
| CN107040935A (en) * | 2017-04-10 | 2017-08-11 | 河海大学 | The adaptive approach newly disturbed is produced after a kind of reduction vertical sector division |
| WO2018196834A1 (en) * | 2017-04-28 | 2018-11-01 | 中兴通讯股份有限公司 | Method and device for adjusting downtilt angle of antenna |
| CN109804674A (en) * | 2016-10-04 | 2019-05-24 | 信实通信有限公司 | System and method for mitigating coverage hole from overlay area |
| CN110493794A (en) * | 2018-05-15 | 2019-11-22 | 中国移动通信集团湖北有限公司 | Base station expansion method, device, equipment and storage medium |
| CN110740450A (en) * | 2019-10-14 | 2020-01-31 | 中国联合网络通信集团有限公司 | network cell capacity expansion method and device |
| CN111372265A (en) * | 2018-12-26 | 2020-07-03 | 中国电信股份有限公司 | Antenna parameter configuration method, device and system and computer readable storage medium |
| CN113747454A (en) * | 2020-05-27 | 2021-12-03 | 中国联合网络通信集团有限公司 | Network optimization method, device, equipment and storage medium |
| CN116033434A (en) * | 2021-10-25 | 2023-04-28 | 中国联合网络通信集团有限公司 | Network coverage management method, device, equipment and readable storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101035353A (en) * | 2006-03-06 | 2007-09-12 | 西门子（中国）有限公司 | Radio resource multiplexing method and allocation method in the radio mobile communication system |
| CN101394647A (en) * | 2007-09-21 | 2009-03-25 | 大唐移动通信设备有限公司 | Method and system for realizing cell networking |
| CN101848471A (en) * | 2010-05-07 | 2010-09-29 | 摩比天线技术（深圳）有限公司 | Capacity expansion method for wireless communication network and base station antenna |
| CN102958067A (en) * | 2011-08-19 | 2013-03-06 | 中兴通讯股份有限公司 | Extending device, base stations, networking method of base stations and shared antenna feeder system |
-
2013
- 2013-05-30 CN CN201310208225.1A patent/CN104219673B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101035353A (en) * | 2006-03-06 | 2007-09-12 | 西门子（中国）有限公司 | Radio resource multiplexing method and allocation method in the radio mobile communication system |
| CN101394647A (en) * | 2007-09-21 | 2009-03-25 | 大唐移动通信设备有限公司 | Method and system for realizing cell networking |
| CN101848471A (en) * | 2010-05-07 | 2010-09-29 | 摩比天线技术（深圳）有限公司 | Capacity expansion method for wireless communication network and base station antenna |
| CN102958067A (en) * | 2011-08-19 | 2013-03-06 | 中兴通讯股份有限公司 | Extending device, base stations, networking method of base stations and shared antenna feeder system |
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105828348B (en) * | 2015-01-04 | 2019-03-19 | 中国联合网络通信集团有限公司 | Three-dimensional cell splitting method and device |
| CN105828348A (en) * | 2015-01-04 | 2016-08-03 | 中国联合网络通信集团有限公司 | Three-dimensional cell splitting method and three-dimensional cell splitting device |
| CN105992228A (en) * | 2015-01-29 | 2016-10-05 | 中国移动通信集团浙江有限公司 | Wireless network capacity expansion method and device and electronic device |
| CN105992228B (en) * | 2015-01-29 | 2019-09-13 | 中国移动通信集团浙江有限公司 | A kind of expansion method of wireless network, device and electronic equipment |
| CN105407486B (en) * | 2015-12-02 | 2018-09-21 | 中国联合网络通信集团有限公司 | A kind of method and device of the network capacity extension |
| CN105407486A (en) * | 2015-12-02 | 2016-03-16 | 中国联合网络通信集团有限公司 | Network expansion method and device |
| CN106452528A (en) * | 2016-09-14 | 2017-02-22 | 西安交通大学 | System downlink transmission rate increase method of sector vertical cracking in 3D-MIMO system |
| CN106452528B (en) * | 2016-09-14 | 2019-07-23 | 西安交通大学 | The system descending transmission rate method for improving of sector vertical fissure in 3D-MIMO system |
| CN109804674A (en) * | 2016-10-04 | 2019-05-24 | 信实通信有限公司 | System and method for mitigating coverage hole from overlay area |
| CN109804674B (en) * | 2016-10-04 | 2021-07-27 | 信实通信有限公司 | System and method for mitigating coverage holes from coverage areas |
| CN106686609B (en) * | 2016-11-23 | 2019-11-26 | 中国联合网络通信集团有限公司 | A kind of method and device of the network capacity extension |
| CN106686609A (en) * | 2016-11-23 | 2017-05-17 | 中国联合网络通信集团有限公司 | Method and device of expanding network capacity |
| CN107040935B (en) * | 2017-04-10 | 2019-11-22 | 河海大学 | The adaptive approach newly interfered is generated after a kind of division of reduction vertical sector |
| CN107040935A (en) * | 2017-04-10 | 2017-08-11 | 河海大学 | The adaptive approach newly disturbed is produced after a kind of reduction vertical sector division |
| WO2018196834A1 (en) * | 2017-04-28 | 2018-11-01 | 中兴通讯股份有限公司 | Method and device for adjusting downtilt angle of antenna |
| CN108810921A (en) * | 2017-04-28 | 2018-11-13 | 中兴通讯股份有限公司 | A kind of Downtilt method of adjustment and device |
| CN110493794B (en) * | 2018-05-15 | 2022-04-01 | 中国移动通信集团湖北有限公司 | Base station capacity expansion method, device, equipment and storage medium |
| CN110493794A (en) * | 2018-05-15 | 2019-11-22 | 中国移动通信集团湖北有限公司 | Base station expansion method, device, equipment and storage medium |
| CN111372265A (en) * | 2018-12-26 | 2020-07-03 | 中国电信股份有限公司 | Antenna parameter configuration method, device and system and computer readable storage medium |
| CN111372265B (en) * | 2018-12-26 | 2022-08-30 | 中国电信股份有限公司 | Antenna parameter configuration method, device and system and computer readable storage medium |
| CN110740450A (en) * | 2019-10-14 | 2020-01-31 | 中国联合网络通信集团有限公司 | network cell capacity expansion method and device |
| CN110740450B (en) * | 2019-10-14 | 2022-09-02 | 中国联合网络通信集团有限公司 | Network cell capacity expansion method and device |
| CN113747454A (en) * | 2020-05-27 | 2021-12-03 | 中国联合网络通信集团有限公司 | Network optimization method, device, equipment and storage medium |
| CN113747454B (en) * | 2020-05-27 | 2024-03-26 | 中国联合网络通信集团有限公司 | Network optimization method, device, equipment and storage medium |
| CN116033434A (en) * | 2021-10-25 | 2023-04-28 | 中国联合网络通信集团有限公司 | Network coverage management method, device, equipment and readable storage medium |
| CN116033434B (en) * | 2021-10-25 | 2024-04-02 | 中国联合网络通信集团有限公司 | Network coverage management method, device, equipment and readable storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104219673B (en) | 2018-04-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104219673A (en) | Network expansion method and system | |
| CN103635826B (en) | For the method and apparatus of geo-location movement station | |
| EP3120418B1 (en) | Modal antenna based communication network and methods for optimization thereof | |
| JP5134624B2 (en) | Base station apparatus and directivity control method in mobile communication system | |
| US6795018B2 (en) | Smart antenna arrays | |
| US8260357B2 (en) | Method for 4G node frequency selection | |
| CN111162827B (en) | Beam management method, beam management device, network side equipment, terminal and storage medium | |
| CN104581741B (en) | Network coverage optimization method | |
| US20210345316A1 (en) | Electronic apparatus, wireless communication method and computer-readable medium | |
| CN114026927B (en) | Angle positioning method, device and equipment | |
| US8831684B2 (en) | Base transceiver station with radiation beam steering and active antenna | |
| CN103841602B (en) | Neighborhood configuration method and system | |
| CN103297104B (en) | Antenna array configuration method and aerial array | |
| CN104936192B (en) | Received signal strength acquisition methods and device, coverage optimization method and device | |
| WO2014056162A1 (en) | Method for communication through distributed antenna array system and array system | |
| CN103649769A (en) | Method and apparatus for geo-locating mobile station | |
| CN102740478B (en) | Position information assisted satellite channel allocation method | |
| CN107113633A (en) | The treating method and apparatus of optimizing communication network | |
| CN108777371B (en) | Antenna device | |
| US20190273542A1 (en) | Antenna system, virtual antenna port mapping method, and apparatus | |
| WO2020109872A1 (en) | Network node with a configurable antenna array | |
| US9374721B1 (en) | Dynamic management of base station radiation pattern based on feedback from adjacent base station | |
| CN102547821B (en) | A kind of descending coverage prediction method of theaomni-directional transmission directional reception site type and device | |
| Rowell et al. | Green RF technologies for 5G networks | |
| WO2012102653A1 (en) | Adjusting coverage area of a base station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |