CN106792548B - A kind of selection method and device of micro-base station group - Google Patents
A kind of selection method and device of micro-base station group Download PDFInfo
- Publication number
- CN106792548B CN106792548B CN201710060251.2A CN201710060251A CN106792548B CN 106792548 B CN106792548 B CN 106792548B CN 201710060251 A CN201710060251 A CN 201710060251A CN 106792548 B CN106792548 B CN 106792548B
- Authority
- CN
- China
- Prior art keywords
- micro
- base station
- station group
- terminal
- gdop
- 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.)
- Active
Links
- 238000010187 selection method Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 claims description 29
- 230000008569 process Effects 0.000 claims description 9
- 239000012895 dilution Substances 0.000 claims description 8
- 238000010790 dilution Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 abstract description 28
- 238000005516 engineering process Methods 0.000 abstract description 5
- 239000000243 solution Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 5
- 230000011664 signaling Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000006855 networking Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000023402 cell communication Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 230000009975 flexible effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/025—Services making use of location information using location based information parameters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/20—Selecting an access point
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention discloses the selection method and device of a kind of micro-base station group, is related to wireless communication technology field, and the performance of communication system can be improved under the premise of not increasing complexity.The embodiment of the present invention is by macro base station according to the terminal density of the current location information region of terminal, determine the first preset quantity, and then determine the corresponding first GDOP isopotential map of the first preset quantity, then according to the corresponding GDOP isopotential map of the first preset quantity, the corresponding micro-base station group of minimum GDOP value on current location is chosen.Scheme provided in an embodiment of the present invention is suitable for choosing micro-base station group Shi Caiyong.
Description
Technical field
The present invention relates to wireless communication technology field more particularly to a kind of selection methods and device of micro-base station group.
Background technique
Network-intensive deployment way using heterogeneous hierarchical is to meet mobile data services to be skyrocketed through demand for a long time
Primary solutions, UDN (Ultra-Dense Network, the networking of super-intensive multilayer) use densification networking mode, micro- base
The deployment density stood is higher, and the coverage area of each node is smaller, makes network node more from terminal using this networking mode
Closely, power and spectrum efficiency be can be improved.
It, can be by multiple micro- bases in order to meet following ultra high flux demand due to deploying a large amount of micro-base station in UDN
Joint of standing provides service for terminal, currently, can be using CoMP (Coordinated Multiple Points, collaboration multiple spot biography
It is defeated) technology carries out combined dispatching to micro-base station, for example, terminal can measure the wireless signal from each micro-base station,
The micro-base station that can be accessed is chosen according to measurement report, the micro-base station chosen by terminal oneself, which cooperates with, provides service for the terminal,
But shared information and user data between micro-base station are needed in this way, the complexity of realization is higher, and terminal is not
Optimal micro-base station group can centainly be chosen；Or it can also be that is, prior in the network planning using the method for static selection
It has planned micro-base station group, provides service jointly by multiple micro-base stations in micro-base station group for terminal, but this method is flexible
Property is poor, and the performance that will lead to communication system is lower.So the existing method for choosing micro-base station is not reasonable, can not increase
The performance of communication system is improved under the premise of adding complexity.
Summary of the invention
The embodiment of the present invention provides the selection method and device of a kind of micro-base station group, can be before not increasing complexity
Put the performance for improving communication system.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that
A kind of selection method of micro-base station group, comprising:
Obtain the current location information of terminal；
According to the terminal density of the current location information region, the first preset quantity is determined；
Determine the corresponding first geometry dilution gfactor GDOP isopotential map of first preset quantity, the first GDOP equipotentiality
The GDOP equipotential lines between micro-base station in figure comprising every group of adjacent first preset quantity, the center apart from micro-base station group is closer,
GDOP value is smaller；
According to the corresponding GDOP isopotential map of first preset quantity, it is corresponding to choose minimum GDOP value on the current location
Micro-base station group.
A kind of selection device of micro-base station group, comprising:
Acquiring unit, for obtaining the current location information of terminal；
The terminal of determination unit, the current location information region for being obtained according to the acquiring unit is close
Degree, determines the first preset quantity；Determine the corresponding first geometry dilution gfactor GDOP isopotential map of first preset quantity, it is described
The GDOP equipotential lines between micro-base station in first GDOP isopotential map comprising every group of adjacent first preset quantity, apart from micro-base station group
Center it is closer, GDOP value is smaller；
Selection unit, the corresponding GDOP isopotential map of first preset quantity for being determined according to the determination unit,
Choose the corresponding micro-base station group of minimum GDOP value on the current location.
The selection method and device of micro-base station group provided in an embodiment of the present invention, macro base station is according to the present bit confidence of terminal
The terminal density for ceasing region determines the first preset quantity, and then determines the corresponding first GDOP equipotentiality of the first preset quantity
Figure chooses the corresponding micro-base station of minimum GDOP value on current location then according to the corresponding GDOP isopotential map of the first preset quantity
Group, compared with prior art, the embodiment of the present invention can choose according to GDOP isopotential map to minimum GDOP on terminal current location
Be worth corresponding micro-base station group so that terminal may be at the center of micro-base station group, and during choosing without between micro-base station into
Row Signalling exchange, realizes relatively simple, and terminal is in the center of micro-base station group and has ensured between micro-base station and terminal
Communication performance, the i.e. embodiment of the present invention improve the performance of communication system under the premise of realizing or else increase complexity.
Detailed description of the invention
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 technical 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
It obtains other drawings based on these drawings.
Fig. 1 is the flow chart for selecting then method of micro-base station group provided in an embodiment of the present invention a kind of；
Fig. 2 is the flow chart for selecting then method of another micro-base station group provided in an embodiment of the present invention；
Fig. 3 is the illustrative diagram of GDOP isopotential map provided in an embodiment of the present invention；
Fig. 4 is a kind of logical construction schematic diagram of the selection device of micro-base station group provided in an embodiment of the present invention；
Fig. 5 is the logical construction schematic diagram of the selection device of another micro-base station group provided in an embodiment of the present invention；
Fig. 6 is the logical construction schematic diagram of macro base station provided in an embodiment of the present invention.
Specific embodiment
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 description, 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.
In order to improve the performance of communication system, the embodiment of the invention provides the selection method of micro-base station group a kind of, such as Fig. 1
It is shown, this method comprises:
101, the current location information of terminal is obtained.
It should be noted that the executing subject of the embodiment of the present invention is macro base station, the macro base station of the embodiment of the present invention increases
It calculating GDOP (Geometric Dilution of Precision, geometry dilution gfactor) and determines and stores GDOP etc.
Gesture figure, the communication for managing micro-base station in its coverage area, controlling terminal access the functions such as micro-base station.
102, according to the terminal density of current location information region, the first preset quantity is determined.
Wherein, the first preset quantity is the quantity of the micro-base station in the micro-base station group needed for terminal service.In order to avoid
There is excess load load in micro-base station, and when terminal density is larger, the micro-base station quantity of each terminal access is also more, in order to guarantee
The communication quality of terminal, need to choose more micro-base station is terminal service；, whereas if terminal density is smaller, then can choose
A small amount of micro-base station is terminal service.First preset quantity N and crowd density (terminal density) ρpeopleRelationship are as follows: N ∝ ρpeople。
103, the corresponding first GDOP isopotential map of the first preset quantity is determined.
Wherein, the GDOP equipotentiality between the micro-base station in the first GDOP isopotential map comprising every group of adjacent first preset quantity
Line, the center apart from micro-base station group is closer, and GDOP value is smaller.
It should be noted that the GDOP isopotential map for the micro-base station being stored in advance in macro base station within the scope of own services.
104, according to the corresponding GDOP isopotential map of the first preset quantity, it is corresponding micro- to choose minimum GDOP value on current location
Base station group.
Because the center apart from micro-base station group is closer, GDOP value is smaller, so choosing minimum in terminal present position
The corresponding micro-base station group of GDOP value, can make terminal be in the center of micro-base station group as much as possible, ensure terminal
Communication quality.
The selection method of micro-base station group provided in an embodiment of the present invention, macro base station is according to where the current location information of terminal
The terminal density in region determines the first preset quantity, and then determines the corresponding first GDOP isopotential map of the first preset quantity, then
According to the corresponding GDOP isopotential map of the first preset quantity, the corresponding micro-base station group of minimum GDOP value on current location is chosen, and is showed
There is technology to compare, the embodiment of the present invention can be chosen corresponding to minimum GDOP value on terminal current location according to GDOP isopotential map
Micro-base station group so that terminal may be at the center of micro-base station group, and is not necessarily to carry out signaling friendship between micro-base station during choosing
Mutually, realize relatively simple, and terminal is in the center of micro-base station group and has ensured the communication performance between micro-base station and terminal,
I.e. the embodiment of the present invention realize or else increase complexity under the premise of improve communication system performance.
Method flow as shown in connection with fig. 1, after choosing to the corresponding micro-base station group of minimum GDOP value on current location,
The loading condition and signal strength of each micro-base station in the micro-base station group for considering to choose also are needed, this is based on, is implemented in the present invention
Example provide another implementation in, as shown in Fig. 2, in above-mentioned steps 104, according to corresponding GDOP of the first preset quantity etc.
Gesture figure is chosen on current location after the corresponding micro-base station group of minimum GDOP value, this method further include:
201, the load state and signal strength of each micro-base station in the micro-base station group chosen are determined.
It is understood that the problem of communication system performance difference occurs in micro-base station overload in order to prevent, macro base station is for eventually
After micro-base station group is chosen at end, the load state and signal strength that determine each micro-base station in micro-base station group are also needed.
202, it is pre- to judge whether the load state of micro-base station all in the micro-base station group chosen and signal strength are all satisfied
If condition.If so, 203 are thened follow the steps, if it is not, thening follow the steps 204.
For example, if the load state of all micro-base stations is all good in micro-base station group, and signal strength is all larger than terminal
Received signal strength threshold value, thens follow the steps 203, if the load state in micro-base station group there are micro-base station is poor, Huo Zhexin
Number intensity is less than the received signal strength threshold value of terminal, thens follow the steps 204.
203, micro-base station all in the micro-base station group that notice is chosen is that terminal reserves resource, is chosen in order to which terminal accesses
Micro-base station group.
Wherein, macro base station can control the micro-base station in the micro-base station group that terminal access is chosen.
204, the minimum GDOP value on current location on current location in addition to this micro-base station group chosen is chosen again
Corresponding micro-base station group.
Wherein, if there are the micro-base station that load state is poor or signal strength is poor in the micro-base station group chosen,
Terminal accesses after the micro-base station that may cause the signal that micro-base station overload or terminal receive weaker, will affect system
Performance, it is possible to choose in addition to this micro-base station group chosen, the corresponding micro-base station of minimum GDOP value on current location
Group.
205, whether the load state of micro-base station all in the micro-base station group that judgement is chosen again and signal strength are full
Sufficient preset condition.If so, 203 are thened follow the steps, if it is not, then return step 204.
It is understood that if there are the load state of micro-base station and signal strengths in the micro-base station group chosen again not
Meet preset condition, then circulation is needed to execute step 204 to step 205, up to micro-base station all in the micro-base station group chosen
When load state and signal strength are all satisfied preset condition, step 203 is executed.
It should be noted that, when the position of terminal changes, also being needed after the micro-base station group that terminal access is chosen
The current location information of real-time detection terminal is wanted, and chooses optimal micro-base station group again according to Fig. 1 and process shown in Fig. 2,
Optimal micro-base station group is all satisfied in the micro-base station group of preset condition for the load state and signal strength of the micro-base station that is included, eventually
The corresponding micro-base station group of minimum GDOP value on the current location at end；
After choosing optimal micro-base station group again, macro base station needs controlling terminal to switch to again from original micro-base station group
The optimal micro-base station group chosen, switching method are as follows: first disconnect and former micro-base station group between the most weak micro-base station and terminal of signal
Connection, the business of the micro-base station is temporarily assigned to other micro-base stations in former micro-base station group, terminal is established and chooses again
Optimal micro-base station group in connection between the strongest micro-base station of signal successively disconnect and former micro-base station group according to the method
Connection between the most weak micro-base station of middle signal, and the strongest micro-base station of signal in the optimal micro-base station group chosen again is accessed,
To realize that terminal is switched to current optimal micro-base station group, ensure that can be constantly in micro-base station group in terminal moving process
Center.
The selection method of micro-base station group provided in an embodiment of the present invention, after selecting micro-base station group, it is also necessary to judgement choosing
Whether the load state and signal strength for the micro-base station in micro-base station group selected meet preset condition, can avoid the occurrence of micro-base station
The case where overload or terminal received signal intensity difference, occurs, and ensure that the communication quality of terminal and the property of communication system
Energy.
Method flow as shown in connection with fig. 1, GDOP isopotential map are stored in advance in macro base station, that is, are executing Fig. 1 institute
Before the method flow shown, macro base station need to generate GDOP isopotential map, method particularly includes:
Macro base station determines the position coordinates of each micro-base station in itself coverage area first, then according to each micro-base station
Position coordinates calculate the GDOP value between the adjacent micro-base station of different preset quantities.
The embodiment of the present invention can utilize the positioning for being based on TOA (Time of arrival, arrival time) by ranging
Method calculates GDOP value, specific calculating process are as follows:
Assuming that preset quantity is N, that is, calculate N number of adjacent micro-base station (S1,S2,...,SN) combination when GDOP value, RiIt indicates
Terminal is to micro-base station SiMeasurement distance, define pseudo-distance Ri' are as follows: Ri'=Ri+ρ。
Wherein, ρ is since the not accurate bring of synchronization measures offset, it is to be understood that the micro-base station in base station group
Between clock can be kept synchronous, but realize that clock is synchronous more difficult between terminal and micro-base station, so using being based on arriving
Determine that terminal to the distance between micro-base station can generate certain error up to the localization method of time.The mistake of pseudo-distance estimated value
Difference have it is assumed hereinafter that:
E[ΔRi']=0
E[ΔRi′ΔRj']=0
E[(ΔRi')2]=σr 2
That is, the mean value of the evaluated error of pseudo-distance is zero, and mutually indepedent between error, for each independent micro-base station
For, Δ Ri' variance it is equal.
When signal communication environments are free space, RiIt may be expressed as:
First order Taylor series is expanded into, obtained approximate expression are as follows:
Section 3 in the formula and Section 4 indicate error of the micro-base station position in x-axis and y-axis direction, it is assumed that error is
Zero, then above formula can be rewritten as matrix form: Δ r=A Δ X
Wherein, Δ r=[Δ R1',ΔR2',...,ΔRN']T, Δ X=[Δ x, Δ y, Δ ρ]T,
Enable B=(ATA)-1AT, and then obtain matrix Q=BWBT, wherein W is unit matrix, can be calculated according to matrix Q
The GDOP of micro-base station group:
Wherein, Q11,Q22For the diagonal entry of matrix Q.
After GDOP value in the adjacent micro-base station combination for calculating preset quantity, different preset quantities can be drawn
GDOP equipotential lines when adjacent micro-base station combines, generates the corresponding GDOP isopotential map of each preset quantity, and be stored in macro base station
In.
Illustratively, as shown in figure 3, Fig. 3 is the GDOP isopotential map when preset quantity is 3, when preset quantity is 3,
Every 3 adjacent micro-base stations can form a micro-base station group (all micro-base station groups are not shown in Fig. 3), surround each micro-base station
Group can draw out the corresponding GDOP isopotential map of base station group.
It should be noted that the micro-base station in macrocell edge can be with the micro-base station in the coverage area of adjacent macro cell
Communication, and micro-base station group is formed, the communication between different macrocell edges is dispatched by macro base station and is completed.
The selection method of micro-base station group provided in an embodiment of the present invention can preset and store GDOP isopotential map, make
It obtains when terminal chooses micro-base station group, micro-base station group directly can be chosen by pre-stored GDOP isopotential map, reduced
The expense for controlling information reduces the complexity for choosing micro-base station group, and choosing according to GDOP isopotential map micro-base station group can be with
So that terminal is in the center of the micro-base station group chosen, the communication quality of terminal and the performance of communication system are improved.
Corresponding to above method embodiment, in order to improve the performance of communication system under the premise of not increasing complexity, this
Inventive embodiments additionally provide the selection device of micro-base station group a kind of, which is applied in macro base station, as shown in figure 4, the dress
Setting includes: acquiring unit 401, determination unit 402, selection unit 403.
Acquiring unit 401, for obtaining the current location information of terminal；
Determination unit 402, the terminal density of the current location information region for being obtained according to acquiring unit 401,
Determine the first preset quantity；Determine the corresponding first geometry dilution gfactor GDOP isopotential map of the first preset quantity, the first GDOP etc.
The GDOP equipotential lines between micro-base station in gesture figure comprising every group of adjacent first preset quantity, the center apart from micro-base station group is got over
Closely, GDOP value is smaller；
Selection unit 403, the corresponding GDOP isopotential map of the first preset quantity for being determined according to determination unit 402, choosing
Take the corresponding micro-base station group of minimum GDOP value on current location.
In an alternative embodiment of the invention, as shown in figure 5, the device further include: notification unit 404, control unit 405,
Generation unit 406.
Determination unit 402 is also used to determine the load shape of each micro-base station in the micro-base station group of the selection of selection unit 403
Condition and signal strength；
Notification unit 404, if the load state and signal strength for all micro-base station in the micro-base station group of selection are equal
Meet preset condition, then notifies that micro-base station all in the micro-base station group chosen is that terminal reserves resource, in order to terminal access
The micro-base station group of selection；
Selection unit 403, if there is the micro-base station for being unsatisfactory for preset condition in the micro-base station group for being also used to choose, again
It chooses on current location in addition to this micro-base station group chosen, the corresponding micro-base station group of minimum GDOP value on current location；
Notification unit 404, if the load state and signal of micro-base station all in the micro-base station group for being also used to choose again
Intensity is all satisfied preset condition, then notifies that micro-base station all in the micro-base station group chosen again is that terminal reserves resource, so as to
The micro-base station group chosen again is accessed in terminal；
Selection unit 403, if there are still the micro-base station for being unsatisfactory for preset condition in the micro-base station group for being also used to choose again,
Micro-base station group is then chosen again, until the load state of micro-base station all in the micro-base station group chosen and signal strength are all satisfied
Preset condition.
Acquiring unit 401 is also used in terminal moving process, obtains the current location information of terminal in real time；
Selection unit 403, the current location information for the terminal for being also used to be obtained according to acquiring unit 401 are chosen optimal again
Micro-base station group, optimal micro-base station group are all satisfied micro- base of preset condition for the load state and signal strength of the micro-base station that is included
It stands in group, the corresponding micro-base station group of minimum GDOP value on the current location of terminal；
Control unit 405, for successively disconnecting the connection between the micro-base station and terminal that signal is most weak in former micro-base station group,
Establish terminal and the optimal micro-base station group that chooses again in connection between the strongest micro-base station of signal.
Generation unit 406, when the adjacent micro-base station for calculating different preset quantities in itself coverage area combines
GDOP value；GDOP equipotential lines when the adjacent micro-base station combination of different preset quantities is drawn, it is corresponding to generate each preset quantity
GDOP isopotential map.
Generation unit 406 is also used to determine the position coordinates of each micro-base station in itself coverage area；According to each micro- base
The position coordinates stood calculate the GDOP value between the adjacent micro-base station of different preset quantities.
The selection device of micro-base station group provided in an embodiment of the present invention, the terminal that determination unit is obtained according to acquiring unit
The terminal density of current location information region, determines the first preset quantity, and then determines the first preset quantity corresponding the
One GDOP isopotential map, then selection unit is chosen minimum on current location according to the corresponding GDOP isopotential map of the first preset quantity
The corresponding micro-base station group of GDOP value, compared with prior art, the embodiment of the present invention can choose according to GDOP isopotential map to terminal
The corresponding micro-base station group of minimum GDOP value on current location so that terminal may be at the center of micro-base station group, and chooses process
In without carrying out Signalling exchange between micro-base station, realize relatively simple, and terminal is in the center of micro-base station group and ensures
Communication performance between micro-base station and terminal, the i.e. embodiment of the present invention improve communication under the premise of realizing or else increase complexity
The performance of system.
The embodiment of the present invention also provides the selection device of micro-base station group a kind of, as shown in fig. 6, the device is that Fig. 4 and Fig. 5 is retouched
The hardware structural diagram for the macro base station stated.Wherein, macro base station can include: memory 601, processor 602, transceiver 603
And bus 604.
Memory 601 can be ROM (Read Only Memory, read-only memory), static storage device, dynamic memory
Equipment or RAM (Random Access Memory, random access memory).Memory 601 can store an operating system and
Other applications.When by software or firmware to realize technical solution provided in an embodiment of the present invention, for realizing this
The program code for the technical solution that inventive embodiments provide saves in the memory 601, and is executed by processor 602.
Transceiver 603 is for device and other equipment or communication network (such as, but not limited to Ethernet, RAN Radio
Access Network, wireless access network), WLAN (Wireless Local Area Network, WLAN) etc.) it
Between communication.
Processor 602 can use general central processing unit (Central Processing Unit, CPU), micro process
Device, application specific integrated circuit (Application Specific Integrated Circuit, ASIC) or one or
Multiple integrated circuits, for executing relative program, to realize technical solution provided by the embodiment of the present invention.
Bus 604 may include an access, in device all parts (such as memory 601, processor 602 and transceiver
603) information is transmitted between.
It should be noted that although hardware shown in fig. 6 illustrate only memory 601, processor 602, transceiver 603 and total
Line 604.But during specific implementation, it should be apparent to a person skilled in the art that the terminal 60 is also comprising realizing normal fortune
Other devices necessary to row.Meanwhile according to specific needs, it should be apparent to a person skilled in the art that also may include realizing it
The hardware device of his function.
Specifically, when macro base station shown in fig. 6 is for realizing device shown in Fig. 4 and Fig. 5 embodiment, in the macro base station
Transceiver 603, for obtaining the current location information of terminal；
Processor 602 is coupled with memory 601 and transceiver 603, for controlling the execution of program instruction, is specifically used for
According to the terminal density of current location information region, the first preset quantity is determined；Determine the first preset quantity corresponding
One geometry dilution gfactor GDOP isopotential map, between the micro-base station in the first GDOP isopotential map comprising every group of adjacent first preset quantity
GDOP equipotential lines, the center apart from micro-base station group is closer, and GDOP value is smaller；According to the corresponding GDOP equipotentiality of the first preset quantity
Figure chooses the corresponding micro-base station group of minimum GDOP value on current location.
In an alternative embodiment of the invention, processor 602 are also used to determine each micro-base station in the micro-base station group of selection
Load state and signal strength；
Transceiver 603, if the load state of micro-base station all in the micro-base station group for being also used to choose and signal strength are equal
Meet preset condition, then notifies that micro-base station all in the micro-base station group chosen is that terminal reserves resource, in order to terminal access
The micro-base station group of selection；
Processor 602 selects again if there is the micro-base station for being unsatisfactory for preset condition in the micro-base station group for being also used to choose
It takes on current location in addition to this micro-base station group chosen, the corresponding micro-base station group of minimum GDOP value on current location；
Transceiver 603, if the load state and signal of micro-base station all in the micro-base station group for being also used to choose again are strong
Degree is all satisfied preset condition, then notifies that micro-base station all in the micro-base station group chosen again is that terminal reserves resource, in order to
Terminal accesses the micro-base station group chosen again；
Processor 602, if there are still the micro-base station for being unsatisfactory for preset condition in the micro-base station group for being also used to choose again,
Again choose micro-base station group, until in the micro-base station group chosen the load state of all micro-base station and signal strength be all satisfied it is pre-
If condition.
In an alternative embodiment of the invention, transceiver 603 are also used in terminal moving process, obtain terminal in real time
Current location information.
Processor 602 is also used to choose optimal micro-base station group, optimal micro-base station again according to the current location information of terminal
Group is all satisfied in the micro-base station group of preset condition for the load state and signal strength of the micro-base station that is included, the present bit of terminal
Set the corresponding micro-base station group of minimum GDOP value；It successively disconnects between the micro-base station and terminal that signal is most weak in former micro-base station group
Connection, establish terminal and the optimal micro-base station group that chooses again in connection between the strongest micro-base station of signal.
In an alternative embodiment of the invention, processor 602 are also used to calculate different preset quantities in itself coverage area
GDOP value when adjacent micro-base station combines；GDOP equipotential lines when the adjacent micro-base station combination of different preset quantities is drawn, is generated
The corresponding GDOP isopotential map of each preset quantity.
In an alternative embodiment of the invention, processor 602 are also used to determine the position of each micro-base station in itself coverage area
Set coordinate；According to the position coordinates of each micro-base station, the GDOP value between the adjacent micro-base station of different preset quantities is calculated.
The selection device of micro-base station group provided in an embodiment of the present invention, the terminal that processor is obtained according to transceiver it is current
The terminal density of location information region determines the first preset quantity, and then determines the first preset quantity corresponding first
It is corresponding to choose minimum GDOP value on current location then according to the corresponding GDOP isopotential map of the first preset quantity for GDOP isopotential map
Micro-base station group, compared with prior art, the embodiment of the present invention can be chosen according to GDOP isopotential map on terminal current location
The corresponding micro-base station group of minimum GDOP value so that terminal may be at the center of micro-base station group, and is not necessarily to micro- base during choosing
It carries out Signalling exchange between standing, realizes relatively simple, and terminal is in the center of micro-base station group and has ensured micro-base station and end
Communication performance between end, the i.e. embodiment of the present invention improve the property of communication system under the premise of realizing or else increase complexity
Energy.
Through the above description of the embodiments, it is apparent to those skilled in the art that the present invention can borrow
Help software that the mode of required common hardware is added to realize, naturally it is also possible to which the former is more preferably by hardware, but in many cases
Embodiment.Based on this understanding, the portion that technical solution of the present invention substantially in other words contributes to the prior art
Dividing can be embodied in the form of software products, which stores in a readable storage medium, such as count
The floppy disk of calculation machine, hard disk or CD etc., including some instructions are used so that computer equipment (it can be personal computer,
Server or the network equipment etc.) execute method described in each embodiment of the present invention.
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 (10)
1. a kind of selection method of micro-base station group characterized by comprising
Obtain the current location information of terminal；
According to the terminal density of the current location information region, the first preset quantity is determined, wherein described first is default
Quantity be need be micro-base station in the micro-base station group of the terminal service quantity, and first preset quantity is proportional to institute
State terminal density；
Determine the corresponding first geometry dilution gfactor GDOP isopotential map of first preset quantity, the first GDOP isopotential map packet
Include the corresponding GDOP equipotential lines of multiple groups micro-base station group；The corresponding GDOP equipotential lines of the micro-base station group includes in the micro-base station group
GDOP equipotential lines between multiple adjacent micro-base stations, wherein the micro-base station group includes the adjacent micro- of first preset quantity
Base station, the center apart from micro-base station group is closer, and GDOP value is smaller；
According to the corresponding GDOP isopotential map of first preset quantity, it is corresponding micro- to choose minimum GDOP value on the current location
Base station group.
2. the selection method of micro-base station group according to claim 1, which is characterized in that described default according to described first
The corresponding GDOP isopotential map of quantity is chosen on the current location after the corresponding micro-base station group of minimum GDOP value, the method
Further include:
Determine the load state and signal strength of each micro-base station in the micro-base station group chosen；
If the load state of all micro-base stations and signal strength are all satisfied preset condition in the micro-base station group chosen, notify to select
All micro-base stations are that the terminal reserves resource in the micro-base station group taken, the micro-base station chosen in order to terminal access
Group；
If there is the micro-base station for being unsatisfactory for the preset condition in the micro-base station group chosen, is chosen on current location again and remove this
Except the micro-base station group of secondary selection, the corresponding micro-base station group of minimum GDOP value on the current location；
If the load state of all micro-base stations and signal strength are all satisfied the preset condition in the micro-base station group chosen again,
Notify that micro-base station all in the micro-base station group chosen again is that the terminal reserves resource, then in order to which the terminal accesses weight
The micro-base station group newly chosen；
If choosing micro-base station again there are still the micro-base station for being unsatisfactory for the preset condition in the micro-base station group chosen again
Group, until the load state of micro-base station all in the micro-base station group chosen and signal strength are all satisfied the preset condition.
3. the selection method of micro-base station group according to claim 2, which is characterized in that in the micro-base station group that notice is chosen
All micro-base stations are that the terminal reserves resource, after the micro-base station group chosen in order to terminal access, the method
Further include:
In terminal moving process, the current location information of terminal is obtained in real time, and again according to the current location information of terminal
Choose optimal micro-base station group, the optimal micro-base station group is all satisfied pre- for the load state and signal strength of the micro-base station that is included
If in the micro-base station group of condition, the corresponding micro-base station group of minimum GDOP value on the current location of terminal；
It successively disconnects the connection between the micro-base station and terminal that signal is most weak in former micro-base station group, establishes terminal and choose again
Connection in optimal micro-base station group between the strongest micro-base station of signal.
4. the selection method of micro-base station group according to any one of claim 1 to 3, which is characterized in that in the acquisition
Before the current location information of terminal, the method also includes:
Macro base station calculates each preset quantity pair when the adjacent micro-base station combination of different preset quantities in itself coverage area
The GDOP value between adjacent micro-base station answered；
GDOP equipotential lines when the adjacent micro-base station combination of different preset quantities is drawn, the corresponding GDOP of each preset quantity is generated
Isopotential map.
5. the selection method of micro-base station group according to claim 4, which is characterized in that the macro base station calculates itself covering
In range when the adjacent micro-base station combination of different preset quantities between the corresponding adjacent micro-base station of each preset quantity
GDOP value, comprising:
Determine the position coordinates of each micro-base station in itself coverage area；
According to the position coordinates of each micro-base station, the GDOP value between the adjacent micro-base station of each preset quantity is calculated.
6. a kind of selection device of micro-base station group characterized by comprising
Acquiring unit, for obtaining the current location information of terminal；
Determination unit, the terminal density of the current location information region for being obtained according to the acquiring unit, really
Fixed first preset quantity, wherein first preset quantity is to need to be the micro-base station in the micro-base station group of the terminal service
Quantity, and first preset quantity is proportional to the terminal density；
Determine the corresponding first geometry dilution gfactor GDOP isopotential map of first preset quantity, the first GDOP isopotential map packet
Include the corresponding GDOP equipotential lines of multiple groups micro-base station group；The corresponding GDOP equipotential lines of the micro-base station group includes in the micro-base station group
GDOP equipotential lines between multiple adjacent micro-base stations, wherein the micro-base station group includes adjacent micro- of first preset quantity
Base station, the center apart from micro-base station group is closer, and GDOP value is smaller；
Selection unit, the corresponding GDOP isopotential map of first preset quantity for being determined according to the determination unit, chooses
The corresponding micro-base station group of minimum GDOP value on the current location.
7. the selection device of micro-base station group according to claim 6, which is characterized in that described device further include: notification sheet
Member；
The determination unit is also used to determine the load state of each micro-base station in the micro-base station group of the selection unit selection
And signal strength；
The notification unit, if the load state and signal strength for all micro-base station in the micro-base station group of selection are all satisfied
Preset condition notifies that micro-base station all in the micro-base station group chosen is that the terminal reserves resource, then in order to the terminal
Access the micro-base station group chosen；
The selection unit weighs if there is the micro-base station for being unsatisfactory for the preset condition in the micro-base station group for being also used to choose
It is new to choose on current location in addition to this micro-base station group chosen, the corresponding micro- base of minimum GDOP value on the current location
Stand group；
The notification unit, if the load state and signal strength of micro-base station all in the micro-base station group for being also used to choose again
It is all satisfied the preset condition, then notifies that micro-base station all in the micro-base station group chosen again is that the terminal reserves resource,
In order to which the terminal accesses the micro-base station group chosen again；
The selection unit, if there are still the micro- bases for being unsatisfactory for the preset condition in the micro-base station group for being also used to choose again
It stands, then chooses micro-base station group again, until the load state of micro-base station all in the micro-base station group chosen and signal strength are equal
Meet the preset condition.
8. the selection device of micro-base station group according to claim 7, which is characterized in that described device further include: control is single
Member；
The acquiring unit is also used in terminal moving process, obtains the current location information of terminal in real time；
The selection unit, the current location information for the terminal for being also used to be obtained according to the acquiring unit are chosen optimal micro- again
Base station group, the optimal micro-base station group are all satisfied the micro- of preset condition for the load state and signal strength of the micro-base station that is included
In base station group, the corresponding micro-base station group of minimum GDOP value on the current location of terminal；
Described control unit is built for successively disconnecting the connection between the micro-base station and terminal that signal is most weak in former micro-base station group
Stand the connection in terminal and the optimal micro-base station group chosen again between the strongest micro-base station of signal.
9. the selection device of micro-base station group according to any one of claim 6 to 8, which is characterized in that described device is also
It include: generation unit；
The generation unit, it is each described when for calculating the adjacent micro-base station combination of different preset quantities in itself coverage area
GDOP value between the corresponding adjacent micro-base station of preset quantity；Draw GDOP when the adjacent micro-base station combination of different preset quantities
Equipotential lines generates the corresponding GDOP isopotential map of each preset quantity.
10. the selection device of micro-base station group according to claim 9, which is characterized in that
The generation unit is also used to determine the position coordinates of each micro-base station in itself coverage area；According to each micro-base station
Position coordinates, calculate the GDOP value between the adjacent micro-base station of each preset quantity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710060251.2A CN106792548B (en) | 2017-01-24 | 2017-01-24 | A kind of selection method and device of micro-base station group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710060251.2A CN106792548B (en) | 2017-01-24 | 2017-01-24 | A kind of selection method and device of micro-base station group |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106792548A CN106792548A (en) | 2017-05-31 |
| CN106792548B true CN106792548B (en) | 2019-08-27 |
Family
ID=58943314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710060251.2A Active CN106792548B (en) | 2017-01-24 | 2017-01-24 | A kind of selection method and device of micro-base station group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106792548B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107682863B (en) * | 2017-07-13 | 2020-12-25 | 国网浙江省电力公司嘉兴供电公司 | Power base station selection and layout method |
| CN110139219A (en) * | 2018-03-28 | 2019-08-16 | 杨铭域 | Wisdom 5G network system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105554849A (en) * | 2015-12-14 | 2016-05-04 | 中国联合网络通信集团有限公司 | Access method and system of ultra-dense network, control node and data node |
| CN105578559A (en) * | 2015-12-14 | 2016-05-11 | 中国联合网络通信集团有限公司 | Access method, device and system under ultra-dense networking |
-
2017
- 2017-01-24 CN CN201710060251.2A patent/CN106792548B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105554849A (en) * | 2015-12-14 | 2016-05-04 | 中国联合网络通信集团有限公司 | Access method and system of ultra-dense network, control node and data node |
| CN105578559A (en) * | 2015-12-14 | 2016-05-11 | 中国联合网络通信集团有限公司 | Access method, device and system under ultra-dense networking |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106792548A (en) | 2017-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2020063286A1 (en) | Measurement method and device | |
| CN104620125B (en) | Method and apparatus for calculating location of terminal in wireless communication system | |
| CN110213809B (en) | System and method for non-cellular wireless access | |
| CN101945454B (en) | Wireless lan handover method and system | |
| JP7384909B2 (en) | Positioning method and device using beam information | |
| JP6843895B2 (en) | Communication method and communication device | |
| CN103313316B (en) | A kind of Check processing method and device of different system pingpang handoff | |
| CN109996332A (en) | Resident method and apparatus | |
| US12015965B2 (en) | Apparatus and user equipment positioning method | |
| CN105517077A (en) | Network re-election and switching method, base station and mobile terminal | |
| EP3681215B1 (en) | Method and device for sending positioning signal | |
| CN109428657B (en) | Positioning method and device | |
| CN106792548B (en) | A kind of selection method and device of micro-base station group | |
| CN109429177A (en) | A kind of positioning and rectifying method and device | |
| JP7382487B2 (en) | Method and device for on-demand positioning related application data | |
| CN109451579A (en) | A kind of localization method and equipment based on bluetooth | |
| CN103763773A (en) | Method and device for locating mobile terminal | |
| CN108012299A (en) | A kind of TRP and motion management method | |
| CN106131925A (en) | GAS query method and device | |
| CN108810965A (en) | A kind of random access resource distributing method and device | |
| CN106535327A (en) | Wireless locating method and apparatus | |
| CN107770810A (en) | A kind of method and device of flexible configuration cyclic prefix | |
| CN107113766A (en) | Exchange method, the apparatus and system of positional parameter | |
| Lieckfeldt et al. | An algorithm for distributed beacon selection | |
| CN108834152A (en) | A kind of WiFi control method based on router |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |