CN102595416A - PCI (Physical Cell Identity) self-adaptive distribution method in cellular communication system - Google Patents
PCI (Physical Cell Identity) self-adaptive distribution method in cellular communication system Download PDFInfo
- Publication number
- CN102595416A CN102595416A CN2012100349850A CN201210034985A CN102595416A CN 102595416 A CN102595416 A CN 102595416A CN 2012100349850 A CN2012100349850 A CN 2012100349850A CN 201210034985 A CN201210034985 A CN 201210034985A CN 102595416 A CN102595416 A CN 102595416A
- Authority
- CN
- China
- Prior art keywords
- pci
- base station
- new base
- management server
- network management
- 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
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention relates to a PCI (Physical Cell Identity) self-adaptive distribution method in a cellular communication system, which comprises the following two operating steps: (1) initial configuration: a network management server receives respective geographic positions and transiting power information reported by new base stations, judges self configuration application scenes of PCIs of the new base stations on the basis of acquired geographic positions, transmitting power and propagation loss information of the new base stations and base stations operating around the new base stations, automatically selects a PCI initial distribution method indicating that the base stations are preferential or the PCIs are preferential on the basis of the application scenes and distributes PCI resource groups for the new base stations concentratedly according to the selected algorithm; and (2) rationality verification: after acquiring the initial PCIs, all the new base stations are started to enter a pre-operating state and verify whether the initial PCI configuration is rational according to the communication behavior of a terminal; and if conflict or confusion exists, the base stations which have faults are closed immediately, a PCI conflict report, PCI conflict domain information and a PCI reconfiguration request are sent to the network management server, and the network management server reconfigures and issues the PCIs for the base stations which have the faults.
Description
Technical field
The present invention relates to a kind of wireless parameter that is used for cordless communication network plans and automatic configuration method automatically; Exactly; The self-adapting distribution method that relates to the Physical Cell Identifier PCI (Physical Cell Identity) of position-based information in a kind of wireless cellular network belongs to the technical field of mobile communication.
Background technology
Along with the high speed development of the communication technology and data service, the scale of wireless network is increasing, and Home eNodeB is introduced in multiple communication technology coexistence again, makes communication network become complicated day by day.If still rely on traditional wireless network planning and optimization means, the artificial configuration of accomplishing the mass network parameter, its operation easier also becomes increasingly complex, and the cost of the network planning, optimization and operation is also increasingly high.Operator pays close attention to the efficient that network operation is safeguarded more in the attention location system performance, the OPEX that how to cut operating costs (Operating Expense) is the top-priority problem of operator.Therefore, the high-end operator of American-European main flow initiates self-organizing network SON (Self-Organizing Network) technology, hopes to reduce operation cost through introducing SON, improves operating efficiency, promotes the performance and the stability of network.
To the various network parameter, third generation partner program 3GPP is organized in and has drafted different self-organizing use-cases in the corresponding standard standard, and for example physical-layer cell identifier distributes automatically, Automatic Neighboring Relation function, network capacity self-optimizing or the like.Traditional physical-layer cell identifier PCI is the initial stage in the network planning, relies on actual network measure and planning instrument manual configuration to accomplish by network planning engineer.PCI is used for the sequence in physical layer unique identification sub-district, its effect be scrambling in main synchronously with auxilliary synchronous channel, make the terminal when detecting synchronizing channel, obtain cell ID.
In LTE (Long Term Evolution) wireless communication system, PCI is divided into 168 groups, and every group comprises 3 PCI, so 504 available PCI can be provided altogether.More specifically; Three PCI of every group are (the PSS difference values 0 that rely on main synchronizing sequence PSS (Primary Synchronization Series) to distinguish; 1; 2) be (value 0～167 of SSS) that relies on secondary synchronization sequences SSS (Second Synchronization Series) to distinguish between PCI group and the group.PCI is used for primary synchronization channel (PSCH) and auxiliary synchronization channel (SSCH) are carried out scrambling, make mobile terminal device can carry out the sub-district major-minor synchronously with obtain slot synchronization and frame synchronization in, demodulation obtains the physical layer identifications of sub-district.But,, will produce the phase mutual interference, so will reasonably distribute to PCI if neighbor cell adopts identical PCI.
An important process of legacy network planning is in disposing at the initial stage of network, to give each cell allocation cell ID manually.This needs network planning personnel to carry out DATA REASONING on the spot, and relies on the help of network planning tool to accomplish it.In the New Generation of Communication network, along with the large scale deployment in the hot spot region of Microcell and picocell, the physical label of manual configuration sub-district has run into the difficulty that a lot of engineerings and practical operation are disposed.In addition; Consider the restriction of cell ID quantity; Therefore in the hot spot region of Microcell and Home eNodeB large scale deployment, Physical Cell Identifier must relate to multiplexing, must consider following two PCI configuration requirements during with allocation algorithm in that the design cell ID is multiplexing:
PCI is conflict principles (Collision-free) not: the cell ID that is disposed is unique in cell coverage area; Be the terminal in this sub-district area coverage, adopt the interference value that the sub-district produced of same physical cell ID must be lower than the setting threshold value.
PCI does not obscure principle (Confusion-free): any two the employed Physical Cell Identifier of neighbor cell in each sub-district all are different.
The automatic distribution function of PCI is the measurement result that relies on terminal even base station self, and combining the essential information (geographical position, transmitting power, PCI operating position etc.) of all base stations of high-rise acquisition automatically is the optimum physical cell ID of all new base station configuration,
Summary of the invention
In view of this; The purpose of this invention is to provide a kind of Physical Cell Identifier PCI self-adapting distribution method that is used for cell mobile communication systems position-based information; Can obtain not conflict each other and the PCI that does not obscure so that add the sub-district of controlling the new base station of network; And the PCI of the operation sub-district that the base station is controlled in the PCI that each newly-increased sub-district obtains and the network does not conflict mutually and does not obscure mutually, thereby from the PCI configuration effort of complicacy, frees the network maintenance staff.
In order to reach the foregoing invention purpose, the invention provides a kind of Physical Cell Identifier PCI (Physical Cell ID) self-adapting distribution method that is used for cell mobile communication systems, it is characterized in that said method comprises following two operational phases:
The initial configuration stage: network management server receives geographical position separately and the transmission power information that new base station reports; Move geographical position, transmitting power and the propagation loss information of base station based on all new base stations that obtained and around it, judge the PCI self-configuring application scenarios of each new base station; Again based on the PCI self-configuring application scenarios of confirming, network management server is selected the preferentially still preferential PCI original allocation algorithm of PCI of base station automatically, and is the initial PCI resource group of new base station assigns according to selected algorithm concentrated area;
Whether the soundness verification stage: after all new base stations obtained initial PCI, start got into prerun pre-operation state, and reasonable in this initial PCI configuration of communication behavior checking in this stage based on the terminal; If have conflict or obscure, closing problem base station immediately then, and send PCI conflict report, PCI collision domain information and reshuffle the PCI request to network management server, network management server reconfigures and issues PCI for the problem base station.
The present invention is to simplify manual PCI configuration operation, to realize that network distributes PCI to propose as target automatically, and the advantage and the creativeness of this method are:
Collect geographical position and the transmission power information that comprises all new base stations and operation base station on every side thereof by network management server; Carry out centralized PCI initial configuration; Utilize Automatic Neighboring Relation ANR (the Automatic Neighbor Relations) function of network experiment operation phase to carry out the soundness verification of PCI then, thereby realize the correct and reasonable configuration of PCI.Therefore; The inventive method can realize the function of distributing Physical Cell Identifier automatically for new base station in the self-organizing network automatically; Simultaneously accomplish that not only the PCI that is disposed should satisfy two basic demands that do not conflict and do not obscure; Also to effectively reduce the conflict that possibly occur in the PCI layoutprocedure as much as possible and obscure, guarantee that each sub-district receives from the interference of using identical PCI sub-district as far as possible little in the network; Make that just the multiplex distance of PCI is far away as far as possible, reducing the interference between the identical PCI sub-district, thereby improve the performance of the Cell searching at terminal, also reduced because of network from healing PCI conflict that causes and the risk of obscuring.And self-adapting distribution method of the present invention is simple to operate, realizes easily, so its promise well of applying.
Description of drawings
Fig. 1 is the application scenarios sketch map of the inventive method.
Fig. 2 is the self-adapting distribution method operating procedure flow chart of PCI of the present invention.
Fig. 3 (A), (B), (C) are respectively the base station interference estimation sketch mapes that operating procedure flow chart, the PCI of the PCI priority algorithm used among the present invention organizes current multiplexing number permutation table and selected PCI.
Fig. 4 (A), (B), (C) be respectively the PCI priority algorithm used among the present invention the operating procedure flow chart, wait to dispose the corresponding PCI interference matrix in new base station and each element computational methods sketch map in the interference matrix.
Fig. 5 is that the inside of base station PCI in the inventive method distributes sketch map.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, the present invention is made further detailed description below in conjunction with accompanying drawing and embodiment.
The present invention disposes in the wireless communication system process in certain zone, and self adaptation is distributed the method for Physical Cell Identifier PCI.PCI is used in each sub-district of physical layer unique identification.In self-organization network technology, be new base station assigns PCI automatically by network management server.Other automatic configuration method that is different from PCI, they mostly are to be an insertion network node (base station) in the network that has moved at, and are the reasonable PCI of this node configuration.The inventive method is to be applied in the networking process of certain scale; Operator has accomplished addressing, has built a station, switches on, has been wiredly connected to operations such as OAM; And new base station relies on self and network management server to accomplish the configuration of relevant parameter automatically; Manual intervention is the least possible and enter into running status automatically, thereby reduces the cost of networking, improves the efficient of networking.
Referring to Fig. 1, introduce the practical application scene of the inventive method, the circle among the figure is represented the omnidirectional antenna base station, and the clover shape is represented three fan antenna base stations, and the clover of its hollow core sign is new base station, and what have the part shade is the base station that is in running status.The inventive method can be applied to the scene that following three kinds of PCI self adaptations are distributed:
It is maximum that scenario A is that people study: single base station is inserted in weak covering or blind overlay area at the existing network of a normal operation; Network only need be given this base station configuration PCI; Previous self-configuration method is to test oneself through the base station to find adjacent area PCI information on every side; Report the PCI information of its adjacent area again through the adjacent area,, satisfy and do not conflict and the equipping rules of not obscuring so that be unique PCI in its selection " double bounce ".But it requires the base station to possess the function of descending reception, and is very big to the change of existed system.When the present invention is directed to this type single base station adding network, adopting new base station requests network management server is that it distributes PCI, only needs new base station to report oneself geographical position and transmission power information, initiates the PCI configuring request again.
Scenario B is to dispose a new communication network in one big regional (like a city); Need to build the new base station of some; And the PCI of the base station at the network's coverage area edge that this is new distributes must consider which PCI the same frequency wireless communications network base station that has moved that exists around it has used.
Scene C and scenario B have similar part, also are in order to build fairly large network and to dispose a plurality of base stations in big open area; Difference is that the PCI distribution of this scene only need be considered new mutual impact amongst base stations.This scene normally carrier network build early stage, when certain regional construction network, communication network is not also built up in the area beyond this area; Perhaps the base station in the New-deployed Network and its PCI resource of moving the base station use on every side are set completely independent from one another.
The PCI resource that the inventive method is can be for the new base station assigns of above-mentioned three kinds of different scenes suitable; And allocation result can either satisfy and not have PCI conflict between the new base station and obscure, and also must guarantee also not have between new base station and the operation base station PCI simultaneously and conflict and obscure.
Referring to Fig. 2, the operational flowchart of PCI self-adapting distribution method of the present invention is described.This method comprises following two stages:
The initial configuration stage: new base station reports separately geographical position and transmission power information to network management server; Network management server is judged the adaptive configuration application scenarios of new base station PCI based on all new base stations that obtained and the geographical position of moving the base station on every side, transmitting power and propagation loss information; (, then confirm as the configuration scenario A based on the PCI adaptive configuration application scenarios of confirming again if reporting the base station number of request is 1; If the base station number that reports request is greater than 1, and the PCI configuration will receive the influence of peripheral base station, then confirms as the configuration scenario B; If report the base station number of request more; And the PCI of new base station configuration is not influenced by peripheral base station; Then confirm as configuration scene C); It still is the preferential PCI original allocation algorithm of PCI preferentially that network management server is selected the base station automatically, and according in the selected set of algorithms being the initial PCI resource group of new base station assigns.
The soundness verification stage: no problem because any PCI self-configuration method all can't guarantee to avoid the PCI that distributes fully; Therefore; After all new base stations obtain initial PCI; Start gets into prerun pre-operation state, and according to the communication behavior of the terminal in the coverage in this stage, verifies whether this initial PCI configuration is reasonable; Just support to realize the Automatic Neighboring Relation function, the adjacent area list information of setting up X2 interface and utilizing X2 interface to exchange judges whether to exist the sub-district of PCI unreasonable allocation.If existence conflicts or obscures; Closing problem base station immediately then; And send PCI conflict report, PCI collision domain (its certainly out of use PCI set that reports to the webserver) information and reshuffle the PCI request to network management server, network management server reconfigures and issues PCI for the problem base station.
Accomplish the operation in above-mentioned two stages, just accomplish all processes of PCI self-configuring of the present invention, all new base stations can both obtain rational PCI configuration result.
Referring to Fig. 2, specifically introduce the detail operations step of the inventive method, wherein first three step belongs to the initial configuration stage, and back three steps belong to the soundness verification stage:
Network management server is according to the new base station information the collected data with the operation base station that chooses, and judges that the concrete grammar of application scenarios of this PCI self-configuring is following:
If new base station number is 1, then carry out the PCI original allocation according to scenario A;
If new base station number is greater than 1, and operation collection of base stations Φ
OldBe not empty, then carry out the original allocation of PCI according to application scenarios B;
If new base station number is greater than the PCI number of resources, and operation collection of base stations Φ
OldBe sky, then carry out the original allocation of PCI according to application scenarios C; If this stylish base station number is the unduplicated PCI resource of new base station Random assignment group less than the PCI number of resources with regard to need not multiplexing PCI.
Need to prove: this step 1 is before execution, and new base station has been accomplished addressing, construction, switched on, is connected to each item beamhouse operation of network management server, only needs to accomplish the wireless parameter that must dispose and just can get into running status.
In this step 1, because of network management server store its administration all the operation base stations parameter, for the initial configuration of PCI, network management server only need move the geographical position of base station and the information of transmitting power; After network management server obtains all new base station informations, propose to influence the operation collection of base stations Φ that PCI distributes in view of the above
Old, promptly select the operation base station that the new base station PCI of influence distributes the operation base station around all new base stations, and the PCI that considers to use respectively these base stations is to the influence of this sub-distribution.The method of wherein selecting the operation base station that influences new base station PCI distribution is: one of traversal is managed regional all significantly and is moved base stations earlier, estimates that again these operation base station branches are clipped to the interference value of all new base stations; If certain operation base station arrives interference value of all new base stations and all is lower than and sets the interference threshold value, show that this operation base station can ignore to the influence of the PCI distribution of new base station; Otherwise, show that this operation base station is assigned influence and it is added into set Φ the PCI of new base station
Old
(21) network management server is selected the PCI original allocation method that the base station is preferential or PCI is preferential automatically according to the self-configuring application scenarios of new base station PCI, and is new base station assigns PCI resource group according to the algorithm of selecting.
Referring to Fig. 3, introduce the PCI precedence method: confirm the PCI group that this iteration is distributed earlier, distribute to certain new base station to this PCI group according to the interference value size again.Concrete grammar is: during each iteration, network management server is statistics PCI resource collection S earlier
TotalIn the current multiplexing number of each PCI, therefrom select the minimum PCI resource group PCI_selected of current multiplexing number; If when the multiplexing number of a plurality of PCI resource groups equates, then therefrom select one at random; Utilize selected radio propagation model to disturb estimation again; And calculate and all to wait to dispose new base station and receive all respectively and use the interference value of PCI as the base station of PCI_selected; Therefrom select the minimum PCI of interference value as this iteration object for allocation, and distribute to this new base station to this PCI_selected.
The essence of " data preparation " among Fig. 3 is that the base station that the front is described reports request and parameter information, network management server to confirm available PCI set etc.Step 301: selected radio propagation model (should select local radio wave experience propagation model) is used to the back and estimates that the phase mutual interference between the base station prepares.As stated; The present invention is a purpose with maximization PCI multiplex distance; For example; Electromagnetic wave at the propagation model of free space is:
wherein, the carrier frequency of setting is 2GHz, so this formula is the relation of path loss and distance.Step 302: seek the minimum PCI group of current multiplexing number, network management server is preserved a PCI multiplexing number permutation table (shown in Fig. 3 (B)), the distribution condition of this table record current PC I, the current PC I 3 shown in figure
#Multiplexing number is minimum, is merely 2 times, so this PCI that confirms group is PCI 3
#, this is the Important Thought of the inventive method, guarantees that last allocation result is that the multiplexing number of times of PCI is even in whole zone.Therefore, in each iterative process, at first confirm the PCI resource, give certain best new base station selected resource allocation then.Said whole zone is the operation base station institute region covered that new base station is about to the PCI distribution of region covered and the new base station of influence.Step 303: when the current multiplexing number of a plurality of PCI group was identical, network management server needed therefrom select at random a PCI group, as the PCI resource of this sub-distribution.Step 304: accomplish the estimation of interference value.Step 305: confirm to distribute to which base station to the PCI that selects, concrete grammar is shown in Fig. 3 (C): if selected PCI is 3
#, use PCI 3 then as shown in the figure
#The base station be base station a and b, then new base station X, Y and Z utilize propagation model calculation base station a and the b of the selection interference sum to these three new base stations respectively, again PCI 3
#Distribute to the minimum new base station of interference value, i.e. the maximum new base station of multiplex distance.Step 306: new base station assigns to the PCI group in comprise three PCI, also to be assigned to each sub-district to these 3 PCI according to own fan antenna horizontal direction angle.Step 307: accomplish this iterative operation of this sub-distribution, certain new base station obtains PCI, and the multiplexing number of the PCI that will just distribute again group adds 1.Step 308: NM server judges whether to accomplish this PCI and distributes, if then get into next stage; Otherwise, continue to carry out iterative computation.
Referring to Fig. 4, introduce the base station precedence method: confirm earlier this iteration is distributed which new base station (this also is the maximum different of base station precedence method and PCI precedence method) of PCI, confirm as the PCI group of this new base station assigns again.Concrete grammar is: in each iterative process, calculate a R * P interference matrix earlier, in the formula, R is for waiting to dispose new base station number, and P is the PCI number of resources that network management server can dispose, and P=|S
Total|, the element in the matrix waits to dispose the interference value of each corresponding PCI of new base station for each; Judge the PCI resource group that each new base station respectively can be multiplexing according to the interference threshold value of setting again: wait to dispose new base station for certain; Judge the interference value of its each PCI that is subjected to earlier; If the corresponding interference value of certain PCI, shows then that this new base station can not multiplexing this PCI resource group greater than the interference threshold value; Then, the base station that PCI right to choose wherein is minimum is as the distribution object of this iterative process, and from the reusable PCI resource group of this base station, selects the allocation result of the minimum PCI resource group of corresponding interference value as this selection of base stations.
Data preparation among Fig. 4 is identical with Fig. 3 with the definite radio propagation model in the step 401, repeats no more here.Step 402 is calculated the interference value under each corresponding PCI group of all new base stations, and is formed " interference matrix " shown in Fig. 4 (B).The size of being somebody's turn to do " interference matrix " is R * P, and wherein, R is a new base station number of wanting PCI allocation, and P is the number of PCI group; (R=3 among Fig. 4 (C), P=3), new base station X will calculate corresponding PCI 1 respectively to the computational methods of each element value shown in Fig. 4 (C) in the interference matrix
#, PCI 2
#, PCI 3
#Interference value, promptly be respectively the interference sum of chain-dotted line (sub-district h, f, d), dotted line (sub-district b, g) and solid line (sub-district a, c) sign; Similarly, the corresponding interference value of calculation base station Y and Z again.Finally obtain being similar to Fig. 4 (B) " interference matrix ".Step 404; Compare each element in " interference matrix " and preset threshold value; Number with the PCI group confirming to select each new base station: be earlier the new base station assigns PCI of right to choose minimum, shown in Fig. 4 (B), be lower than preset interference threshold value with the interference value of shade mark; Therefore, new base station 1
#Available PCI is PCIa, new base station 2
#Available PCI is PCIb and PCIe, new base station 3
#Available PCI is PCId and PCIa, new base station 4
#Available PCI is PCIe, PCIb, PCIa and PCIc.Because new base station 1
#Right to choose have only a kind, the base station of therefore selecting is new base station 1#.Step 405, select certain new base station (like 1#) after, check " interference matrix " that its is corresponding, be that it selects the minimum PCI group of interference value.Step 406 comprises three PCI in new base station assigns to the PCI group, according to the fan antenna horizontal direction angle of oneself controlling, is assigned to each sub-district to these 3 PCI again.Step 407 is accomplished this iteration of this sub-distribution, and certain new base station obtains PCI, and the PCI group multiplexing number that has just distributed adds 1.
(22) network management server obtains the PCI resource collection S that can supply disposed by this sub-distribution that network planning personnel preset
Total, this resource collection need be considered various heterogeneous networks, and will be the PCI resource of femto base station and Home eNodeB reservation sufficient amount;
(23) network management server is selected a specific radio propagation waveform, is used for the interference value estimation between next step base station; And, select to carry out the following operations step respectively according to the different application scene:
If application scenarios is A, then adopt traversal method, utilize propagation model to calculate the corresponding PCI resource collection S in each new base station successively
TotalIn the interference value of each PCI group, therefrom select the minimum PCI group of interference value, as the PCI of the original allocation of this new base station; Or
If application scenarios is B; Be that PCI is distributed in concentrated area, new base station one by one then: utilize the propagation model estimation to use the mutual interference value in base station of identical PCI, distribute according to interference value minimum and PCI equally distributed principle in network again by network management server; Just whole PCI distribution method is an iterative process, and iterations equals to treat the new base station number of PCI allocation, and it is the initial PCI of new base station configuration that each iteration adopts PCI precedence method or base station precedence method: or
If application scenarios is C, then stand good to the PCI primary distribution method of application scenarios B, promptly network management server selection PCI precedence method or base station precedence method are all new base station assigns initial p CI groups; Its difference is: the operation collection of base stations Φ among the application scenarios B
OldBe not empty, the operation collection of base stations among the application scenarios C of this moment is an empty set.
Referring to Fig. 5, introduce each new base station after obtaining the PCI group, how distribute to the PCI in the group each sub-district of its control according to setting principle.Be illustrated as the part of New-deployed Network overlay area, the base station in this zone (comprising fan antenna and omnidirectional antenna) has all obtained a PCI group through initial PCI self-configuring planning.Base station 501,502,503,504,505,506,507,508 and 509 among the figure all is three fan antenna types, and these base stations will be assigned to corresponding sector to 3 PCI in every group according to the horizontal direction angle of each sector.In the common whole zone, level angle is that the PSS of the PCI that distributes respectively of each sector of 90 degree, 210 degree and 330 degree is 0,1 and 2.To the omnidirectional antenna base station of similar base station 510,511, obtain PCI group after, it will be PSS the sub-district that 0 PCI is assigned to this base stations control only, remaining two PCI are just on the shelf.Through this sub-distribution, each newly-built cellular cell all obtains a PCI, is the operation through real network just, finds that the problem that PCI planning exists provides condition.
Above-mentioned back three steps 4,5 and 6 have been accomplished the PCI soundness verification.So far, PCI of the present invention plans automatically with automatic layoutprocedure and is all over.All new base stations can obtain rational PCI resource.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope that the present invention protects.
Claims (9)
1. Physical Cell Identifier PCI self-adapting distribution method in the cell mobile communication systems is characterized in that said method comprises following two operational phases:
The initial configuration stage: network management server receives geographical position separately and the transmission power information that new base station reports; Move geographical position, transmitting power and the propagation loss information of base station based on all new base stations that obtained and around it, judge the PCI self-configuring application scenarios of each new base station; Again based on the PCI self-configuring application scenarios of confirming, network management server is selected the preferentially still preferential PCI original allocation algorithm of PCI of base station automatically, and is the initial PCI resource group of new base station assigns according to selected algorithm concentrated area;
Whether the soundness verification stage: after all new base stations obtained initial PCI, start got into prerun pre-operation state, and reasonable in this initial PCI configuration of communication behavior checking in this stage based on the terminal; If have conflict or obscure, closing problem base station immediately then, and send PCI conflict report, PCI collision domain information and reshuffle the PCI request to network management server, network management server reconfigures and issues PCI for the problem base station.
2. method according to claim 1 is characterized in that: the said initial configuration stage comprises the following operations content:
(1) network management server extracts operation base station that the PCI of the new base station of influence distributes, is the parameter of the operation base station around the new base station from its memory device; Move the information of geographical position, transmitting power and the propagation loss of base station again according to all new base stations that obtained and around it, judge the self-configuring application scenarios of each new base station PCI;
(2) network management server is selected the PCI original allocation algorithm that the base station is preferential or PCI is preferential automatically according to the self-configuring application scenarios of new base station PCI, and is new base station assigns PCI resource group according to the algorithm of selecting;
(3) network management server is issued to each new base station to the PCI allocation result, and subsequently, the PCI in the group is distributed to each sub-district of its control according to the horizontal direction angle of fan antenna in each new base station.
3. method according to claim 2; It is characterized in that: said step (1) is before execution; New base station has been accomplished addressing, construction, has been switched on, has been connected to each item beamhouse operation of network management server, only needs to accomplish the wireless parameter that must dispose and just can get into running status; The transmission power information that said new base station reports is the interference that is used to estimate original allocation PCI, and if new base station do not report transmitting power, the transmitting power that all new base stations then are set when estimation is disturbed is all identical.
4. method according to claim 2; It is characterized in that: in the said step (1); Because of network management server store its administration all the operation base stations parameter, for the initial configuration of PCI, network management server only need move the geographical position of base station and the information of transmitting power; After network management server obtains all new base station informations, propose to influence the operation collection of base stations Φ that PCI distributes in view of the above
Old, promptly select the operation base station that the new base station PCI of influence distributes the operation base station around all new base stations, and the PCI that considers to use respectively these base stations is to the influence of this sub-distribution;
The said method of selecting the operation base station that influences new base station PCI distribution is: one of traversal is managed regional all significantly and is moved base stations earlier, estimates that again these operation base station branches are clipped to the interference value of all new base stations; If certain operation base station arrives interference value of all new base stations and all is lower than and sets the interference threshold value, show that this operation base station can ignore to the influence of the PCI distribution of new base station; Otherwise, show that this operation base station is assigned influence and it is added into set Φ the PCI of new base station
Old
5. method according to claim 2 is characterized in that: in the said step (1), network management server confirms that according to new base station and operation base station information the application scenarios that this PCI distributes has three types:
A, a little less than the network of normally operation, cover or a new base station is inserted in blind overlay area;
B, affix one's name to more than one new base station, and this does not have there is previous same frequency cordless communication network of disposing around the network's coverage area at the intra-zone that does not have the network coverage;
C, dispose a plurality of base stations, build a fairly large new network, do not have existing same frequency cordless communication network around it in bigger open area; Though the perhaps existing network coverage around it, the PCI resource that use those operation base stations is not occured simultaneously with the PCI resource that is about to distribute.
6. method according to claim 5 is characterized in that: in the said step (1), network management server is according to the new base station information the collected data with the operation base station that chooses, and judges that the concrete grammar of application scenarios of this PCI self-configuring is following:
If new base station number is 1, then carry out the PCI original allocation according to scenario A;
If new base station number is greater than 1, and operation collection of base stations Φ
OldBe not empty, then carry out the original allocation of PCI according to application scenarios B;
If new base station number is greater than the PCI number of resources, and operation collection of base stations Φ
OldBe sky, then carry out the original allocation of PCI according to application scenarios C; If this stylish base station number is the unduplicated PCI resource of new base station Random assignment group less than the PCI number of resources with regard to need not multiplexing PCI.
7. method according to claim 6 is characterized in that: said step (2) comprises the following operations content:
(21) network management server is selected the PCI original allocation method that the base station is preferential or PCI is preferential automatically according to the self-configuring application scenarios of new base station PCI, and is new base station assigns PCI resource group according to the algorithm of selecting;
(22) network management server obtains the PCI resource collection S that can supply disposed by this sub-distribution that network planning personnel preset
Total, this resource collection need be considered various heterogeneous networks, and will be the PCI resource of femto base station and Home eNodeB reservation sufficient amount;
(23) network management server is selected a specific radio propagation waveform, is used for the interference value estimation between next step base station; And, select to carry out the following operations step respectively according to the different application scene:
If application scenarios is A, then adopt traversal method, utilize propagation model to calculate the corresponding PCI resource collection S in each new base station successively
TotalIn the interference value of each PCI group, therefrom select the minimum PCI group of interference value, as the PCI of the original allocation of this new base station; Or
If application scenarios is B; Be that PCI is distributed in concentrated area, new base station one by one then: utilize the propagation model estimation to use the mutual interference value in base station of identical PCI, distribute according to interference value minimum and PCI equally distributed principle in network again by network management server; Just whole PCI distribution method is an iterative process, and iterations equals to treat the new base station number of PCI allocation, and it is the initial PCI of new base station configuration that each iteration adopts PCI precedence method or base station precedence method: or
If application scenarios is C, then stand good to the PCI primary distribution method of application scenarios B, promptly network management server selection PCI precedence method or base station precedence method are all new base station assigns initial p CI groups; Its difference is: the operation collection of base stations Φ among the application scenarios B
OldBe not empty, the operation collection of base stations among the application scenarios C of this moment is an empty set.
8. method according to claim 6 is characterized in that:
Said PCI precedence method is a PCI group of confirming that earlier this iteration is distributed, distributes to certain new base station to this PCI group according to the interference value size again; Concrete grammar is: during each iteration, network management server is statistics PCI resource collection S earlier
TotalIn the current multiplexing number of each PCI, therefrom select the minimum PCI resource group PCI_selected of current multiplexing number; If when the multiplexing number of a plurality of PCI resource groups equates, then select one at random; Utilize the radio propagation model to disturb estimation again; And calculate and all to wait to dispose new base station and receive all respectively and use the interference value of PCI as the base station of PCI_selected; Therefrom select the minimum PCI of interference value as this iteration object for allocation, and distribute to this new base station to this PCI_selected;
Said base station precedence method is the new base station of confirming this iteration distribution PCI earlier, confirms as the PCI group of this new base station assigns again; Concrete grammar is: in each iterative process, calculate a R * P interference matrix earlier, in the formula, R is for waiting to dispose new base station number, and P is the PCI number of resources that network management server can dispose, and P=|S
Total|, the element in the matrix waits to dispose the interference value of each corresponding PCI of new base station for each; Judge the PCI resource group that each new base station respectively can be multiplexing according to the interference threshold value of setting again: wait to dispose new base station for certain; Judge the interference value of its each PCI that is subjected to earlier; If the corresponding interference value of certain PCI, shows then that this new base station can not multiplexing this PCI resource group greater than the interference threshold value; Then, the base station that PCI right to choose wherein is minimum is as the distribution object of this iterative process, and from the reusable PCI resource group of this base station, selects the allocation result of the minimum PCI resource group of corresponding interference value as this selection of base stations.
9. method according to claim 2 is characterized in that: the said soundness verification stage comprises the following operations content:
(4) each new base station obtains initial separately PCI group number, and in conjunction with other wireless parameter that is disposed, start gets into prerun pre-operation state; And know Neighboring Relation Table and the X2 interface information between each base station of each sub-district of its configuration through the Automatic Neighboring Relation function ANRF in the self-organization network technology;
(5) each new base station is through the mutual adjacent cell relation information of X2 interface; Know own double bounce scope, be the PCI that the neighbor cell of its neighbor cell is using; And judge whether exist in these sub-districts and the identical sub-district of PCI of oneself using; If do not have, the allocation result that then shows all PCI is reasonably, finishes all operations; Otherwise, show the sub-district that has the PCI conflict or obscure, carry out subsequent step (6);
(6) for to exist the sub-district of the unreasonable configuration of PCI to reconfigure PCI: the PCI request is initiated to reshuffle to network management server immediately in this new base station, reports the PCI collision domain simultaneously, promptly reports own out of use PCI set to the webserver; Network management server is redistributed new PCI for it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210034985.0A CN102595416B (en) | 2012-02-16 | 2012-02-16 | PCI (Physical Cell Identity) self-adaptive distribution method in cellular communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210034985.0A CN102595416B (en) | 2012-02-16 | 2012-02-16 | PCI (Physical Cell Identity) self-adaptive distribution method in cellular communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102595416A true CN102595416A (en) | 2012-07-18 |
| CN102595416B CN102595416B (en) | 2015-04-08 |
Family
ID=46483525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210034985.0A Active CN102595416B (en) | 2012-02-16 | 2012-02-16 | PCI (Physical Cell Identity) self-adaptive distribution method in cellular communication system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102595416B (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102802177A (en) * | 2012-08-03 | 2012-11-28 | 中国联合网络通信集团有限公司 | Communication system and communication method |
| CN102869022A (en) * | 2012-08-21 | 2013-01-09 | 中兴通讯股份有限公司 | Method and device for allocating physical cell identifiers (PCIs) of wireless network |
| CN103716845A (en) * | 2012-10-09 | 2014-04-09 | 中兴通讯股份有限公司 | PCI distribution method and device |
| WO2014120056A1 (en) * | 2013-02-01 | 2014-08-07 | Telefonaktiebolaget L M Ericsson (Publ) | Method and arrangement for pci assignement |
| CN104735717A (en) * | 2015-04-15 | 2015-06-24 | 广东怡创科技股份有限公司 | Cell PCI (peripheral component interconnect) allocation method and cell PCI allocation system |
| CN104837143A (en) * | 2015-04-15 | 2015-08-12 | 广东怡创科技股份有限公司 | Cell PCI configuring method and system |
| CN104884143A (en) * | 2013-06-17 | 2015-09-02 | 华为技术有限公司 | Network management method and device |
| CN104937970A (en) * | 2013-01-30 | 2015-09-23 | 索尼公司 | Communications control device, communications control method, program, and terminal device |
| CN105611554A (en) * | 2015-12-18 | 2016-05-25 | 河北电信设计咨询有限公司 | Physical cell identification distribution method |
| WO2016090987A1 (en) * | 2014-12-10 | 2016-06-16 | 电信科学技术研究院 | Network perception based service policy configuration method and network device |
| CN106162615A (en) * | 2015-04-10 | 2016-11-23 | 中国移动通信集团公司 | A kind of solve PCI confusion or the method for conflict, device and equipment in LAA system |
| CN107426759A (en) * | 2017-08-09 | 2017-12-01 | 广州杰赛科技股份有限公司 | The Forecasting Methodology and system of newly-increased base station data portfolio |
| CN108271181A (en) * | 2016-12-30 | 2018-07-10 | 上海大唐移动通信设备有限公司 | A kind of PCI optimization method and devices of wireless network |
| WO2022000476A1 (en) * | 2020-07-03 | 2022-01-06 | Qualcomm Incorporated | Autonomous pci selection in small cell |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101772097A (en) * | 2009-01-06 | 2010-07-07 | 华为技术有限公司 | Method and system for allocating physical cell identifiers |
| CN101990197A (en) * | 2009-08-05 | 2011-03-23 | 中兴通讯股份有限公司 | Method and system for realizing cell physical identification configuration in home base station |
| CN102075945A (en) * | 2010-12-22 | 2011-05-25 | 北京邮电大学 | Method for distributing distributed physical cell identity in LTE wireless access network |
| CN102256284A (en) * | 2010-05-21 | 2011-11-23 | 中兴通讯股份有限公司 | Method for finding relationship of adjacent regions, PCI (Physical Country Identifier) detection method and eNB (evolved Node B) |
-
2012
- 2012-02-16 CN CN201210034985.0A patent/CN102595416B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101772097A (en) * | 2009-01-06 | 2010-07-07 | 华为技术有限公司 | Method and system for allocating physical cell identifiers |
| CN101990197A (en) * | 2009-08-05 | 2011-03-23 | 中兴通讯股份有限公司 | Method and system for realizing cell physical identification configuration in home base station |
| CN102256284A (en) * | 2010-05-21 | 2011-11-23 | 中兴通讯股份有限公司 | Method for finding relationship of adjacent regions, PCI (Physical Country Identifier) detection method and eNB (evolved Node B) |
| CN102075945A (en) * | 2010-12-22 | 2011-05-25 | 北京邮电大学 | Method for distributing distributed physical cell identity in LTE wireless access network |
Non-Patent Citations (1)
| Title |
|---|
| NOKIA SIEMENS NETWORKS, NOKIA: "《Solution(s) to the 36.902’s Automated Configuration of Physical Cell Identity Use Case》", 《R3-080812》, 3 April 2008 (2008-04-03), pages 1 - 7 * |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102802177A (en) * | 2012-08-03 | 2012-11-28 | 中国联合网络通信集团有限公司 | Communication system and communication method |
| CN102869022A (en) * | 2012-08-21 | 2013-01-09 | 中兴通讯股份有限公司 | Method and device for allocating physical cell identifiers (PCIs) of wireless network |
| CN103716845A (en) * | 2012-10-09 | 2014-04-09 | 中兴通讯股份有限公司 | PCI distribution method and device |
| CN103716845B (en) * | 2012-10-09 | 2017-10-27 | 中兴通讯股份有限公司 | A kind of PCI distribution method and device |
| CN104937970B (en) * | 2013-01-30 | 2019-06-18 | 索尼公司 | Communication control unit, communication control method, program and terminal device |
| CN104937970A (en) * | 2013-01-30 | 2015-09-23 | 索尼公司 | Communications control device, communications control method, program, and terminal device |
| US9578592B2 (en) | 2013-02-01 | 2017-02-21 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and arrangement for PCI assignment |
| WO2014120056A1 (en) * | 2013-02-01 | 2014-08-07 | Telefonaktiebolaget L M Ericsson (Publ) | Method and arrangement for pci assignement |
| CN104884143A (en) * | 2013-06-17 | 2015-09-02 | 华为技术有限公司 | Network management method and device |
| WO2016090987A1 (en) * | 2014-12-10 | 2016-06-16 | 电信科学技术研究院 | Network perception based service policy configuration method and network device |
| US10341174B2 (en) | 2014-12-10 | 2019-07-02 | China Academy Of Telecommunications Technology | Network perception based service policy configuration method and network device |
| CN106162615A (en) * | 2015-04-10 | 2016-11-23 | 中国移动通信集团公司 | A kind of solve PCI confusion or the method for conflict, device and equipment in LAA system |
| CN106162615B (en) * | 2015-04-10 | 2019-09-13 | 中国移动通信集团公司 | PCI confusion or the method, apparatus and equipment of conflict in a kind of solution LAA system |
| CN104837143A (en) * | 2015-04-15 | 2015-08-12 | 广东怡创科技股份有限公司 | Cell PCI configuring method and system |
| CN104735717B (en) * | 2015-04-15 | 2018-07-27 | 广东海格怡创科技有限公司 | Cell PCI configuration methods and system |
| CN104837143B (en) * | 2015-04-15 | 2018-09-28 | 广东海格怡创科技有限公司 | Cell PCI configuration methods and system |
| CN104735717A (en) * | 2015-04-15 | 2015-06-24 | 广东怡创科技股份有限公司 | Cell PCI (peripheral component interconnect) allocation method and cell PCI allocation system |
| CN105611554A (en) * | 2015-12-18 | 2016-05-25 | 河北电信设计咨询有限公司 | Physical cell identification distribution method |
| CN108271181A (en) * | 2016-12-30 | 2018-07-10 | 上海大唐移动通信设备有限公司 | A kind of PCI optimization method and devices of wireless network |
| CN107426759A (en) * | 2017-08-09 | 2017-12-01 | 广州杰赛科技股份有限公司 | The Forecasting Methodology and system of newly-increased base station data portfolio |
| CN107426759B (en) * | 2017-08-09 | 2020-06-19 | 广州杰赛科技股份有限公司 | Method and system for predicting data traffic of newly added base station |
| WO2022000476A1 (en) * | 2020-07-03 | 2022-01-06 | Qualcomm Incorporated | Autonomous pci selection in small cell |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102595416B (en) | 2015-04-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102595416A (en) | PCI (Physical Cell Identity) self-adaptive distribution method in cellular communication system | |
| López-Pérez et al. | OFDMA femtocells: A roadmap on interference avoidance | |
| CN102857376B (en) | The network management of layered radio access system | |
| CN102421101B (en) | Method for self-configuring physical cell identifiers (PCI) | |
| CN110199544B (en) | Method, device and system for distributing system information to terminals in multi-operator scene | |
| CN102067526A (en) | Synchronization, scheduling, network management and frequency assignment method of a layered wireless access system | |
| CN108243423A (en) | For the method and system of dynamic cell configuration | |
| CN105323830B (en) | Energy-saving compensation method, energy-saving compensation recovery method and device | |
| CN102084714A (en) | Hierarchical wireless access system and access point management unit in the system | |
| CN103634854A (en) | Terminal access method, terminal access system and terminal | |
| CN104955077A (en) | Heterogeneous network cell clustering method and device based on user experience speed | |
| CN106572480A (en) | Backhaul network management method, access network management entity, equipment and wireless way station | |
| CN111565398B (en) | Communication method, device, system and storage medium | |
| CN102905274B (en) | Frequency allocating method based on hierarchical wireless access system | |
| WO2010075990A1 (en) | Method for automatically configuring a neighbor cell list for a base station in a cellular wireless network | |
| CN103199975A (en) | Multi-indoor-eNB (MIB) system of distributed type carrier aggregation | |
| CN104780547A (en) | Method and device for determining working frequency points of cells | |
| CN102612070A (en) | Method for configuring wireless resource management and measurement set under multi-point coordination and base station | |
| CN109863820A (en) | System and method for scalable radio electric network slice | |
| US9699661B2 (en) | Method and apparatus for PCI classified self-configuration | |
| CN110248369B (en) | Cell capacity adjusting method and device | |
| CN101998352A (en) | Undirected connected graph coloration-based physical layer identification self-configuration method and equipment | |
| CN103533656A (en) | PCI (physical cell identification) allocation method suitable for low-speed MR (mobile relay) | |
| CN109691166A (en) | The identification of adjacent network node in cordless communication network | |
| WO2022116195A1 (en) | Anti-interference method for new radio network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |