CN103581915B - A kind of method and apparatus planning PCI in LTE network - Google Patents
A kind of method and apparatus planning PCI in LTE network Download PDFInfo
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Abstract
The embodiment of the present invention provides the method and apparatus planning PCI in a kind of LTE network, method includes: according to the geographical position residing for cell cluster, PCI resource section is distributed for described cell cluster, each cell cluster comprises at least one base station, each base station comprises at least one community, and each PCI resource section comprises multiple PCI；In same described cell cluster, constructing at least one PCI ternary pair according to described PCI resource section, PCI ternary is to containing three parameters, and the residual value of parameter one, parameter two and parameter three delivery 3 that same PCI ternary is internal is unequal；Determine the allocation order of distribution PCI ternary pair according to geographic direction between each base station in described cell cluster, distribute at least one PCI ternary pair to each base station according to described allocation order.Avoid the conflict produced due to multiplexing PCI, it is to avoid the presence of intercell interference brought due to unreasonable distribution PCI.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of LTE network is planned PCI method and
Equipment.
Background technology
In Long Term Evolution (LTE, Long Term Evolution) network, PCI (Physical Cell ID, physics
Cell ID) the corresponding combination of orthogonal sequence and pseudo-random sequence, 504 PCI of protocol definition, for
Avoiding presence of intercell interference, protocol requirement: do not conflict, the co-frequency cell that any two is adjacent can not use same
Individual PCI；Do not obscure, any two co-frequency cell can not be had in all adjacent areas of a community to use identical
PCI；The public reference signal binding of PCI and community, the value of PCI directly determine reference signal time
Frequently position, in two-port network, if the value of PCI mould 3 is equal, then the time-frequency location phase of reference signal
With, in one port network, if the residual value of PCI mould 6 is equal, then the time-frequency location of reference signal is identical,
Base station many employings two-port network.
Prior art being planned, PCI follows the principle do not conflicted, do not obscure, and plans two respective continuous print
PCI resource section, a distribution for femto base station community PCI；Another is used for base station cell PCI
Distribution, and the PCI space distributing to base station cell is sufficiently large so that the PCI multiplexing of base station cell away from
Away from enough, it is ensured that the path loss between two base station cells using identical PCI is sufficiently large so that both it
Between interference sufficiently small, PCI space is sufficiently large refers to that assignable PCI number is at least equal to enough grand honeybees
The community sum of nest bunch, is allowed to the probability that PCI between microcellulor conflict relatively low, extrapolates base station employing
PCI resource section, and the PCI resource section that dilatation is reserved.Such as, the distribution method of PCI space includes:
It is 1-50 for femto base station community distribution continuous P CI resource section-scope；Distribute for macrocellular bunch base station cell
A sufficiently large continuous print PCI resource section-scope is 51-321；One piece of company is reserved for macrocellular bunch base station
Continuous PCI resource section-scope is 322-447, is reserved for standby.
The defect of prior art is, if the residual value of the PCI delivery 3 of neighbor cell is equal, then and reference signal
Time-frequency location identical, although meet the principle that PCI does not conflict and do not obscures, but can cause reference signal it
Between more serious interference occurs, its presence of intercell interference caused is that network is unaffordable, and prior art is not
Relevant solution is proposed.
Summary of the invention
The embodiment of the present invention provides the method and apparatus planning PCI in a kind of LTE network, it is to avoid occur existing
Having in technology, neighbor cell is according to equal two PCI of residual value after delivery, then neighbor cell there will be
Disturbing between reference signal, between this reference signal, interference can cause the defect of presence of intercell interference.
The embodiment of the present invention provides a kind of method planning PCI in LTE network, including: according to cell cluster
Residing geographical position, distributes PCI resource section for described cell cluster, comprises at least one in each cell cluster
Individual base station, each base station comprises at least one community, and each PCI resource section comprises multiple PCI；?
In same described cell cluster, construct at least one PCI ternary pair, PCI according to described PCI resource section
Ternary to containing three parameters, parameter one, parameter two and parameter three delivery 3 that same PCI ternary is internal
Residual value unequal；Distribution PCI ternary is determined according to geographic direction between each base station in described cell cluster
To allocation order, distribute at least one PCI ternary pair to each base station according to described allocation order.
In described method, according to the geographical position residing for cell cluster, distribute PCI resource for described cell cluster
Section, including: go out adoptable multiplex distance according to geographical position calculation, the size of multiplex distance and wireless network
The complexity of network environment is inverse relation；The PCI into base station distribution is extrapolated according to described multiplex distance
Resource section, for the second PCI resource section of indoor distributed system distribution, the 3rd reserved PCI resource section.
In described method, construct at least one PCI ternary pair, PCI ternary according to described PCI resource section
To containing three parameters, parameter one, parameter two and the value of parameter three delivery 3 that same PCI ternary is internal
Unequal, including: after the different parameter one of described PCI ternary pair, parameter two, parameter three delivery 3
Residual value is equal, remaining after the internal parameter one of same described PCI ternary, parameter two, parameter three delivery 3
It is worth unequal.
In described method, determine distribution PCI according to geographic direction between each base station in described cell cluster
The allocation order of ternary pair, including: for the base station in described cell cluster, determine described according to geographic direction
Allocation order.
In described method, distribute at least one PCI ternary pair according to allocation order to each base station, including:
When the number of cells of base station is less than or equal to three, distribute a PCI ternary pair to base station；For angle, normal cell
Three cell base stations of degree, the residual value after the PCI delivery 3 of the first community distributing to each base station is equal, point
Residual value after the PCI delivery 3 of the second community of each base station of dispensing is equal, distributes to the 3rd of each base station the
Residual value after the PCI delivery 3 of community is equal；Three cell base stations, two communities for non-standard community angle
Base station or omnidirectional station, use community angular superposition method to carry out PCI distribution；Wherein, for two cell base stations
Or omnidirectional stands, standby as this base station of described PCI ternary centering one or two PCI remaining.
In described method, distribute at least one PCI ternary pair according to allocation order to each base station, including:
When the number of cells M having when base station is at least four, distribute N number of PCI ternary pair for each base station,
N is that M/3 rounds up number；Standby as this base station of the described PCI remaining PCI of ternary centering.
A kind of LTE network is planned the equipment of PCI, including: PCI resource allocation unit, for according to little
The geographical position that district bunch is residing, for described cell cluster distribute PCI resource section, each cell cluster comprises to
A few base station, each base station comprises at least one community, and each PCI resource section comprises multiple PCI；
Ternary, to structural unit, in same described cell cluster, constructs at least according to described PCI resource section
One PCI ternary pair, PCI ternary to containing three parameters, the internal parameter one of same PCI ternary,
The residual value of parameter two and parameter three delivery 3 is unequal；Allocation unit in bunch, for according in described cell cluster
Geographic direction between each base station determines the allocation order of distribution PCI ternary pair, according to described allocation order
At least one PCI ternary pair is distributed to each base station.
In described equipment, PCI resource allocation unit includes: multiplex distance computing module, for base area
Reason position calculation goes out adoptable multiplex distance, the size of multiplex distance and the complexity of wireless network environment in
Inverse relation；Extrapolate the first PCI resource section into base station distribution according to described multiplex distance, divide for indoor
Second PCI resource section of distribution system distribution, the 3rd reserved PCI resource section.
In described equipment, in bunch, allocation unit includes: the first distribution module, for the number of cells of base station
During less than or equal to three, distribute a PCI ternary pair to base station；For three cell base stations of normal cell angle,
Residual value after the PCI delivery 3 of the first community distributing to each base station is equal, distributes to the of each base station
Residual value after the PCI delivery 3 of two communities is equal, distributes to the PCI delivery 3 of the 3rd community of each base station
After residual value equal；For three cell base stations of non-standard community angle, two cell base stations or omnidirectional station,
Community angular superposition method is used to carry out PCI distribution；Wherein, two cell base stations or omnidirectional are stood, described
Standby as this base station of PCI ternary centering one or two PCI remaining.
In described equipment, in bunch, allocation unit includes: the second distribution module, little for have when base station
When district number M is at least four, distributing N number of PCI ternary pair for each base station, N is that M/3 upwards takes
Integer；Standby as this base station of the described PCI remaining PCI of ternary centering.
Having the beneficial effect that of the technique scheme of the present invention: for the PCI that different cell cluster distribution is different
After resource section, in same cell cluster, according to the allocation order distribution PCI of each base station in cell cluster
Ternary pair, and internal three parameters of same PCI ternary are different, it is to avoid owing to multiplexing PCI produces
Raw conflict, it is to avoid the presence of intercell interference brought due to unreasonable distribution PCI.
Accompanying drawing explanation
Fig. 1 represents the scattergram of reference signal in the community of PCI Mod3=0；
Fig. 2 represents the scattergram of reference signal in the community of PCI Mod3=1 and PCI Mod3=2；
Fig. 3 represents the method flow schematic diagram planning PCI in a kind of LTE network；
Fig. 4 represents employing community angular superposition method distribution PCI schematic diagram；
Fig. 5 is expressed as the PCI scattergram of Zhong Ge community, all kinds of base station；
Fig. 6 represents the device structure schematic diagram planning PCI in LTE network.
Detailed description of the invention
For making the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with attached
Figure and specific embodiment are described in detail.
The physical area of LTE network indicates (PCI, Physical Cell ID), and span is 0 to 503,
Totally 504 PCI.Each LTE community needs a PCI to be different from adjacent cell；Terminal is in access network
Time, it is possible to judgement and the access of each physical area is carried out according to PCI.The number of LTE network small area
It is difficult to limit, and Physical Cell Identifier only has 504, thus will necessarily multiplexing PCI；If different communities
Use identical PCI, need the interval enough remote-i.e. multiplex distances ensureing between these communities sufficiently large,
Just it is avoided that when access terminal and occurs obscuring and interference.
Reference signal, in the lte networks for measurement and the demodulated signal of channel, first LTE network solves
Recall reference signal, just can carry out the demodulation of data signal, and carry out measurement of correlation and work-such as receive
Signal intensity (RSRP), received signal quality (RSRQ), a series of relevant parameters such as Signal to Interference plus Noise Ratio (SINR)；
Once reference signal is interfered, then LTE network can be caused to produce deviation for the demodulation of signal with measuring.
Running time-frequency resource grid according to LTE network, with conventional CP, 20MHz bandwidth, 1ms subframe
As a example by, total 1200*14 RE, the elementary cell that reference signal takies is RE, is distributed in whole 20MHz
In bandwidth, with 2*2MIMO, as a example by 2 antenna ports, reference signal is distributed as every 3 on frequency domain
Mono-reference signal of individual RE.
Reference signal sequence
According to mode
It is mapped to complex value modulation symbol
On,
As time slot nsReference marks on middle antenna port p, wherein, nsIt is the slot index in a radio frames,
L is the OFDM symbol sequence in a time slot；
In one time slot, on any antenna port be used as transmission of reference signals resource particle (k, l), no
In identical time slot, any transmission on other antenna ports, can be carried out, and be arranged to 0.
Reference signal mapping position defined in Application Example and the relation of PCI, provide PCI and reference
The schematic diagram of signal, as it is shown in figure 1, be the reference signal resource scattergram of reference signal PCI Mod3=0,
The longitudinal axis is frequency, and transverse axis is the time, by three graph discoveries in comparison diagram 1 and Fig. 2, PCI and reference
The binding positions of signal, the reference signal-to-interference to this community is minimum, it would be desirable that the reference signal of adjacent cell
Position is different, and then requires that the PCI of this community is unequal with the residual value of the PCI Mod3 of adjacent cell.
In the embodiment of the present invention, it is provided that a kind of method planning PCI in LTE network, as it is shown on figure 3,
Including:
Step 301, according to the geographical position residing for cell cluster, distributes PCI resource section for described cell cluster,
Comprising at least one base station in each cell cluster, each base station comprises at least one community, each
PCI resource section comprises multiple PCI；
Step 302, in same described cell cluster, constructs at least one according to described PCI resource section
PCI ternary pair, PCI ternary to containing three parameters, the internal parameter one of same PCI ternary, parameter
Two and the residual value of parameter three delivery 3 unequal；
Step 303, determines distribution PCI ternary according to geographic direction between each base station in described cell cluster
To allocation order, distribute at least one PCI ternary pair to each base station according to described allocation order.
The technology that application is provided, after distributing different PCI resource sections for different cell clusters, same
In individual cell cluster, according to the allocation order distribution PCI ternary pair of each base station in cell cluster, and same PCI
Internal three parameters of ternary are different, it is to avoid the conflict that produces due to multiplexing PCI, it is to avoid community
Between the presence of intercell interference brought due to unreasonable distribution PCI.
In a preferred embodiment, also include before step 201: gather the base station information of LTE network
Table, according to described base station information table structure station list and cell list.
Base station information table includes the azimuth of base station id, cell i d, latitude and longitude of base station and community；
List and the list of all communities of all base stations in wireless network is set up according to base station information table；
In station list, at least record base station id, latitude and longitude of base station；
In cell list, at least azimuth of recording cell id community, between community and the base station of correspondence
Relation.
In a preferred embodiment, according to the geographical position residing for cell cluster, distribute for described cell cluster
PCI resource section, including:
Adoptable multiplex distance is gone out, the size of multiplex distance and wireless network environment according to geographical position calculation
Complexity be inverse relation；Wireless network environment is the most complicated, then multiplex distance is the least.
The first PCI resource section into base station distribution is extrapolated, for indoor distributed system according to described multiplex distance
Second PCI resource section of distribution, the 3rd reserved PCI resource section.
In an application scenarios, different cell clusters is in different geographical position, it is therefore desirable to base area
Reason locality condition, distributes PCI resource for different cell clusters, including:
Step 1, geographical position condition includes the wireless applications such as dense city, general city, cities and towns and rural area
Environment, calculates multiplex distance according to geographical locality condition, and at complex environments such as dense cities, path loss is relatively
Greatly, the multiplex distance of base station is less than the multiplex distance used in the scenes such as rural area；Such as, the answering of dense city
With distance can be 4Km, the multiplex distance in general city can be 8Km, suburb multiplex distance permissible
It is 18Km, but is not limited to this；Wherein:
Dense city, owing to the buildings such as high building are the most intensive, thus multiplex distance is less than other regions, PCI
Multiplexing can be with relative close；For base station in the range of 0-300, it is 301-400 for dilatation scope, uses
In room subsystem in the range of 401-503, but it is not limited to this allocation model.
Suburb rural or highway, owing to website is sparse, multiplex distance is bigger could realize safe multiplexing.
For other wireless environments, need dynamically to adjust the PCI scope of distribution, to realize according to wireless environment
Dynamically adjust the scope of application of PCI, to make full use of PCI resource.
Step 2, extrapolates the scope of each cell cluster according to multiplex distance, the base station that comprises in cell cluster,
Indoor distributed system.
Multiplex distance and the covering radius of base station, path loss, path loss coefficient are relevant, and path loss is more
Greatly, the multiplex distance of base station is the least.
After determining multiplex distance according to different wireless scenes, according to the construction features of cellular network, six
In the cellular network of limit shape, the base station number N of each cell cluster meets equation:
N=i2+ij+j2, wherein, i and j is nonzero integer.
Base station number N in cell cluster and multiplex distance LreuseBetween there is relation:
RminFor minimum cell covering radius, thereby determine that the definite model in each cell cluster
Enclose, the concrete condition such as macro base station comprised in cell cluster.
Step 3, determines and needs to distribute to the PCI of base station, the PCI of indoor distributed system, reserved PCI
Standby as dilatation, and the cell cluster of multiplexing, structure PCI ternary to and be allocated.
Adjust for base station according to different wireless environments, room is divided, the PCI scope of the employing such as dilatation, with
Meet the multiplex distance of base station.
PCI ternary is to comprising three PCI, and such as three PCI0/1/2, or three PCI0/2/4 etc. all can claim
It it is a PCI ternary pair.
In a preferred embodiment, construct at least one PCI ternary pair according to described PCI resource section,
Ternary to containing three parameters, parameter one, parameter two and the value of parameter three delivery 3 that same ternary is internal
Unequal, including:
After the different parameter one of described PCI ternary pair, parameter two, parameter three delivery 3 equal, same
After the internal parameter one of described PCI ternary, parameter two, parameter three delivery 3 unequal.
PCI ternary meets condition to needs: arbitrary two PCI ternarys pair, respective parameter one, parameter
Two, equal after parameter three delivery 3, expression formula is:
a0(mod3)=...=ai(mod3)=... aP-1(mod3),
b0(mod3)=...=bi(mod3)=... bP-1(mod3),
c0(mod3)=...=ci(mod3)=... cP-1(mod3)；
Same PCI ternary pair, unequal after parameter one, parameter two, parameter three delivery 3, expression formula
For: ai(mod3)≠bi(mod3)≠ci(mod3)；
Wherein, ai,bi,ciBeing respectively three parameters that i-th PCI ternary is internal, P is all available PCI
Ternary is to total number.
In an application scenarios, the PCI that base station uses is positioned in the range of 0-302, can form 101
PCI ternary pair, the PCI of its PCI Mod3=0 is 0,3,6 ... 300；The PCI of PCI Mod3=1 is
1、4、7…301；The value of PCI Mod3=2 is 2,5,8 ... 302；It is 1 to carry out according to parameter space
It is right, then to organize: 0/1/2,3/4/5 ... .300/301/302 totally 101 for base station, each base station is assigned
One PCI ternary pair.
In a preferred embodiment, distribution PCI ternary pair is determined according to the geographic direction between each base station
Allocation order, including:
For the base station in described cell cluster, determine the allocation order of distribution PCI ternary pair according to geographic direction.
Including: each base station in cell cluster is arranged according to principle of ordering from south orientation north, from West to East
Sequence；
Or, each base station in cell cluster is arranged according to the principle of ordering from north orientation south, from east orientation west
Sequence；The PCI planning making base station possesses certain geographic direction.
In a preferred embodiment, according to described allocation order in described cell cluster each base station distribution
At least one PCI ternary pair, including:
When the number of cells of base station is less than or equal to three, distribute a PCI ternary pair to base station；
For three cell base stations of normal cell angle, distribute to the PCI mould 3 of the first community of each base station
Equal, the PCI mould 3 of the second community distributing to each base station is equal, distributes to the 3rd little of each base station
The PCI mould 3 in district is equal；
Two cell base stations or omnidirectional station, one or two vacant PCI for non-standard community angle
It is reserved for this base station dilatation.
In an application scenarios, after all ranking base stations, according to clooating sequence, each base station is divided successively
Join a PCI ternary pair, point several situations:
1, when the number of cells of the base station in cell cluster is less than or equal to three, distribute a PCI tri-to base station
Unit is right；There are mapping relations in three PCI of PCI ternary centering and each community of base station:
1.1, for three cell base stations-refer to the routine that the whole network overwhelming majority base station uses of normal cell angle
Community angle, the PCI mould 3 of the first community distributing to each base station is equal, in like manner, distributes to each base
The PCI mould 3 of the second community stood is equal, distributes to the PCI delivery 3 of the 3rd community of each base station
Residual value is equal；
1.2, for three cell base stations, two cell base stations or the omnidirectional station of non-standard community angle, with little
District's angular superposition method realizes the mapping of PCI ternary centering PCI and base station cell；
Two cell base stations or base station, omnidirectional station (single cell base station) have only used two or of PCI ternary centering
PCI, one or two vacant PCI are reserved for this base station dilatation.
In a preferred embodiment, when the community of this base station is at least four, distribute N for each base station
Individual PCI ternary pair, N is that M/3 rounds up number.
When the base station to M community, each base station is used to distribute N number of PCI ternary pair, described N number of PCI
The PCI of ternary centering uses community angular superposition method to carry out map bindings with the multiple cell of base station, vacant
PCI is reserved for this base station dilatation, and wherein, M is positive integer and more than or equal to 4, N be M/3 on round
Number.
During for base station distribution PCI ternary pair, as a example by the base station of three communities, three communities of normal cell angle
In base station, the angle of three MPS process is 0 ° ~ 120 °, 120 ° ~ 240 °, 240 ° ~ 360 °, rule
Determine corresponding 0 ° ~ 120 °, first community of PCI of PCI Mod3=0, the PCI correspondence of PCI Mod3=1 the
Two 120 °, communities ~ 240 °, corresponding 240 ° ~ 359 °, 3rd community of the PCI of PCI Mod3=2, according to
Annoyance level between reference signal can be down to minimum by so planning.
As shown in Figure 4, for non-conventional community angle, use community angular superposition method distribution PCI, including:
Angle for three MPS process of three cell base stations is respectively 30 ° ~ 140 °, 140 ° ~ 210 °, 210 °
~ 360 °, compared with the angle of conventional MPS process, 30 ° ~ 140 ° communities and the angle of the first little area overlapping
Part at most, thus distributes the PCI of 30 ° ~ 140 ° community PCI Mod3=0；In like manner, 140 ° ~ 210 °
Community is most with the angle part of the second little area overlapping, thus the PCI of PCI Mode3=1 is distributed to 140 °
~ 210 ° of communities, in like manner can operate with two cell base stations or omnidirectional station.
In a preferred embodiment, according to described allocation order in described cell cluster each base station distribution
At least one PCI ternary pair, including:
When the number of cells M having when base station is at least four, distribute N number of PCI ternary for each base station
Right, N is that M/3 rounds up number；
The dilatation that remaining PCI gives over to base station is standby.
Reference signal mapping position defined in Application Example and the relation of PCI, provide PCI ternary pair
The distribution schematic diagram of multiple base stations in cell cluster, as it is shown in figure 5, a part of community uses the remaining of delivery 3
Value is the PCI of 0, and a part of community uses the PCI that residual value is 1 of delivery 3, and a part of community uses and takes
The residual value of mould 3 is the PCI of 2；Fig. 5 further comprises into non-standard cell base station, and two cell base stations
The situation of distribution PCI, the difference between PCI each PCI of ternary centering is 1, such as 0/1/2,3/4/5,
39/40/41 etc..
The embodiment of the present invention provides in a kind of LTE network the device planning PCI, as shown in Figure 6, and including:
PCI resource allocation unit 601, for according to the geographical position residing for cell cluster, for described cell cluster
Distribution PCI resource section, comprises at least one base station in each cell cluster, each base station comprises at least one
Individual community, each PCI resource section comprises multiple PCI；
Ternary is to structural unit 602, in same described cell cluster, according to described PCI resource section
Construct at least one PCI ternary pair, ternary to containing three parameters, the internal parameter one of same ternary,
The value of parameter two and parameter three delivery 3 is unequal；
Allocation unit 603 in bunch, for determining distribution PCI ternary according to the geographic direction between each base station
To allocation order, distribute at least one according to described allocation order each base station in described cell cluster
PCI ternary pair.
In a preferred embodiment, PCI resource allocation unit 601 includes:
Multiplex distance computing module, for going out adoptable multiplex distance according to geographical position calculation, multiplexing away from
From size and wireless network environment complexity be inverse ratio；
The first PCI resource section into base station distribution is extrapolated, for indoor distributed system according to described multiplex distance
Second PCI resource section of distribution, the 3rd reserved PCI resource section.
In a preferred embodiment, ternary structural unit 602 is constructed PCI ternary to during, should
When following: equal after the different parameter one of described PCI ternary pair, parameter two, parameter three delivery 3, with
After the internal parameter one of one described PCI ternary, parameter two, parameter three delivery 3 unequal.
The allocation order of distribution PCI ternary pair is determined according to the geographic direction between each base station, including: right
Base station in described cell cluster, determines distribution PCI ternary pair according to order from south orientation north, from West to East
Allocation order.
In a preferred embodiment, bunch in, allocation unit 603 includes:
First distribution module, when the number of cells for base station is less than or equal to three, distributes a PCI to base station
Ternary pair；
For three cell base stations of normal cell angle, distribute to the PCI mould 3 of the first community of each base station
Equal, the PCI mould 3 of the second community distributing to each base station is equal, distributes to the 3rd little of each base station
The PCI mould 3 in district is equal；
For three cell base stations, two cell base stations or the omnidirectional station of non-standard community angle, use angle weight
Folded method carries out PCI distribution；Standing for two cell base stations or omnidirectional, one or two vacant PCI is pre-
Give over to this base station dilatation.
Second distribution module, when the number of cells M for having when base station is at least four, for each base
Standing the N number of PCI ternary pair of distribution, N is that M/3 rounds up number；
Standby as this base station of remaining PCI.
Advantage after using this programme is: adjust the size of multiplex distance according to the Different Dynamic of wireless environment,
And then dynamically adjust available PCI resource section；After distributing different PCI resource sections for different cell clusters,
In same cell cluster, according to the allocation order distribution PCI ternary pair of each base station in cell cluster, and with
Internal three parameters of one PCI ternary are different；By PCI ternary to being tied to different base station process
In, for having three communities or the base station less than three communities, distribute a PCI ternary pair, if base
The number stood is more than 3, the community number N/3 that number is this base station of the PCI ternary pair of each base station distribution
Round up, take full advantage of PCI resource, it is to avoid the conflict produced due to multiplexing PCI, it is to avoid
The presence of intercell interference that minizone is brought due to unreasonable distribution PCI.
The above is the preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, on the premise of without departing from principle of the present invention, it is also possible to make some improvements and modifications,
These improvements and modifications also should be regarded as protection scope of the present invention.
Claims (4)
1. the method planning PCI in a LTE network, it is characterised in that including:
According to the geographical position residing for cell cluster, distribute PCI resource section, each community for described cell cluster
Comprising at least one base station in bunch, each base station comprises at least one community, each PCI resource section bag
Containing multiple PCI, including: go out adoptable multiplex distance according to geographical position calculation, the size of multiplex distance
It is inverse relation with the complexity of wireless network environment；Extrapolate as base station distribution according to described multiplex distance
First PCI resource section, for the second PCI resource section of indoor distributed system distribution, the 3rd reserved PCI
Resource section；
In same described cell cluster, construct at least one PCI ternary pair according to described PCI resource section,
PCI ternary is to containing three parameters, and internal parameter one, parameter two and the parameter three of same PCI ternary takes
The residual value of mould 3 is unequal；
The distribution of distribution PCI ternary pair is determined according to geographic direction between each base station in described cell cluster
Sequentially, distribute at least one PCI ternary pair according to described allocation order to each base station, including: base station
When number of cells is less than or equal to three, distribute a PCI ternary pair to base station；For normal cell angle three
Cell base station, the residual value after the PCI delivery 3 of the first community distributing to each base station is equal, distributes to every
Residual value after the PCI delivery 3 of the second community of individual base station is equal, distributes to the 3rd community of each base station
Residual value after PCI delivery 3 is equal；For three cell base stations of non-standard community angle, two cell base stations or
Person omnidirectional stands, and uses community angular superposition method to carry out PCI distribution；Wherein, for two cell base stations or complete
To station, standby as this base station of described PCI ternary centering one or two PCI remaining；
When the number of cells M having when base station is at least four, distribute N number of PCI ternary for each base station
Right, N is that M/3 rounds up number；Standby as this base station of the described PCI remaining PCI of ternary centering.
Method the most according to claim 1, it is characterised in that construct according to described PCI resource section
At least one PCI ternary pair, PCI ternary is to containing three parameters, the parameter that same PCI ternary is internal
One, the value of parameter two and parameter three delivery 3 is unequal, including:
Residual value after the different parameter one of described PCI ternary pair, parameter two, parameter three delivery 3 is equal,
Residual value after the internal parameter one of same described PCI ternary, parameter two, parameter three delivery 3 is unequal.
Method the most according to claim 1, it is characterised in that according to each base in described cell cluster
Geographic direction between standing determines the allocation order of distribution PCI ternary pair, including:
For the base station in described cell cluster, determine described allocation order according to geographic direction.
4. a LTE network is planned the equipment of PCI, it is characterised in that including:
PCI resource allocation unit, for according to the geographical position residing for cell cluster, distributes for described cell cluster
PCI resource section, comprises at least one base station in each cell cluster, it is little that each base station comprises at least one
District, each PCI resource section comprises multiple PCI；Including: multiplex distance computing module, for base area
Reason position calculation goes out adoptable multiplex distance, the size of multiplex distance and the complexity of wireless network environment in
Inverse relation；Extrapolate the first PCI resource section into base station distribution according to described multiplex distance, divide for indoor
Second PCI resource section of distribution system distribution, the 3rd reserved PCI resource section
Ternary, to structural unit, in same described cell cluster, constructs according to described PCI resource section
At least one PCI ternary pair, PCI ternary is to containing three parameters, the parameter that same PCI ternary is internal
One, the residual value of parameter two and parameter three delivery 3 is unequal；
Allocation unit in bunch, for determining distribution according to geographic direction between each base station in described cell cluster
The allocation order of PCI ternary pair, distributes at least one PCI ternary according to described allocation order to each base station
Right, in bunch, allocation unit includes: the first distribution module, when the number of cells for base station is less than or equal to three,
A PCI ternary pair is distributed to base station；
For three cell base stations of normal cell angle, distribute to the PCI delivery of the first community of each base station
Residual value after 3 is equal, and the residual value after the PCI delivery 3 of the second community distributing to each base station is equal, point
Residual value after the PCI delivery 3 of the 3rd community of each base station of dispensing is equal；
For three cell base stations of non-standard community angle, two cell base stations or omnidirectional station, use angle, community
Degree overlay method carries out PCI distribution；Wherein, two cell base stations or omnidirectional are stood, described PCI ternary
Standby as this base station of centering one or two PCI remaining；
Second distribution module, when the number of cells M for having when base station is at least four, for each base
Standing the N number of PCI ternary pair of distribution, N is that M/3 rounds up number；
Standby as this base station of the described PCI remaining PCI of ternary centering.
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| CN105025497B (en) * | 2014-04-30 | 2018-10-19 | ***通信集团北京有限公司 | A kind of network plan method and system |
| CN104168577B (en) * | 2014-08-06 | 2018-02-02 | 武汉虹信技术服务有限责任公司 | A kind of the whole network LTE cells PCI method and device for planning |
| CN105516966B (en) * | 2014-09-24 | 2020-10-02 | 索尼公司 | Apparatus and method in a wireless communication system |
| CN105188066A (en) * | 2015-06-09 | 2015-12-23 | 大唐移动通信设备有限公司 | Method and device for distributing physical cell IDs (PCIs) |
| CN106332098B (en) * | 2015-06-30 | 2019-12-13 | ***通信集团公司 | Method and device for distributing physical cell identification |
| CN105472627B (en) * | 2015-11-18 | 2018-01-26 | 广东南方通信建设有限公司 | A kind of method based on circulation flower arrangement algorithm 4G network planning and optimizations |
| CN106817186B (en) * | 2015-11-30 | 2019-05-10 | ***通信集团广东有限公司 | A kind of method and device of Physical Cell Identifier PCI interference self-optimizing |
| CN105516992B (en) * | 2015-12-14 | 2018-12-14 | 中通服建设有限公司 | A kind of PCI planing method of LTE network |
| CN108260130B (en) * | 2016-12-29 | 2021-10-22 | ***通信集团浙江有限公司 | Method and device for planning station-opening parameters and station-opening adjacent cells of base station |
| CN112492616B (en) * | 2020-10-19 | 2022-09-13 | 中通服咨询设计研究院有限公司 | Communication device and communication method for wireless communication network |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1784031A1 (en) * | 2005-11-04 | 2007-05-09 | Alcatel Lucent | Assignment of restricted power frequencies for improving intercell interferences |
| CN100375559C (en) * | 2004-07-13 | 2008-03-12 | 中兴通讯股份有限公司 | Method of code resource allocation under multi-carrier cell |
| CN101778395A (en) * | 2010-01-08 | 2010-07-14 | 华为技术有限公司 | Method and device for planning physical cell identities |
| CN102421101A (en) * | 2011-12-31 | 2012-04-18 | 北京邮电大学 | Method for self-configuring physical cell identifiers (PCI) |
-
2012
- 2012-07-27 CN CN201210265511.7A patent/CN103581915B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100375559C (en) * | 2004-07-13 | 2008-03-12 | 中兴通讯股份有限公司 | Method of code resource allocation under multi-carrier cell |
| EP1784031A1 (en) * | 2005-11-04 | 2007-05-09 | Alcatel Lucent | Assignment of restricted power frequencies for improving intercell interferences |
| CN101778395A (en) * | 2010-01-08 | 2010-07-14 | 华为技术有限公司 | Method and device for planning physical cell identities |
| CN102421101A (en) * | 2011-12-31 | 2012-04-18 | 北京邮电大学 | Method for self-configuring physical cell identifiers (PCI) |
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