CN103326807B - A kind of system information sending method and evolved base station - Google Patents
A kind of system information sending method and evolved base station Download PDFInfo
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- CN103326807B CN103326807B CN201210076899.6A CN201210076899A CN103326807B CN 103326807 B CN103326807 B CN 103326807B CN 201210076899 A CN201210076899 A CN 201210076899A CN 103326807 B CN103326807 B CN 103326807B
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Abstract
The embodiment of the invention discloses a kind of system information sending method and evolved base station, wherein the realization of method includes: the management OM configuration of evolved base station read operation obtains Physical Cell Identifier PCI；Described PCI is when allocated, and the PCI of neighbor cell is different；The frequency range corresponding with PCI is selected to send system information according to the PCI read.Neighbor cell uses different frequency ranges to send system information, to reduce presence of intercell interference, improves UE and receives the success rate of system information.
Description
Technical field
The present invention relates to communication technical field, particularly to a kind of system information sending method and evolved base
Stand.
Background technology
System information in Long Term Evolution (Long Term Evolution, LTE) is divided into: Master Information Block
(Master Information Block, MIB) and multiple system information block (System Information
Blocks, SIBs).MIB includes several most important, the most frequently used transmission parameter, subscriber equipment (User
Equipment, UE) from MIB, obtain the most basic information of this community and the instruction of other parameter of community
Parameter.MIB is transmitted on broadcast channel (Broadcast Channel, BCH).SIBs comprises
System information block type 1 (System Information Block type1, SIB1) and system information (system
Information, SI), SIB1 is individually transmission.The scheduling message of SI, MIB is comprised in SIB1
(system information block type 2, system information block type 3, System is included with the SIB information beyond SIB1
Information Block type2, System Information Block type 13) all carry in SI message.
Mapping by schedule information list (the scheduling Info List) spirit comprised in SIB1 of SIB to SI message
Live and configure.It is to be 3G (Third Generation) Moblie partnership project technical specification (Third in schedule information list
Generation Partnership Project Technical Specification, 3GPP TS) in 36.331 agreements
Field of eating dishes without rice or wine.
MIB uses the dispatching cycle of fixing 40ms, and each sub-frame data uses different scrambler sequence, can
To carry out self-demarking code, frequency domain takies middle 72 sub-carrier positions.MIB is at Physical Broadcast Channel (Physical
Broadcast Channel, PBCH) upper transmission, each community uses different scrambler sequence scramblings, because of
This is at cell edge, repeats overlay area and also can normally demodulate.
SIB1 uses the dispatching cycle of fixing 80ms, transmits four times within the 80ms time.SI message is transmitted
Use the mode of dynamic dispatching, such as: the user of the intersection region D of community A and community B, simultaneously
Receive the SIBs information of community A and community B, Qie Liangge community SIBs information on frequency domain descending
Identical algorithms is used on Physical Shared Channel (Physical Downlink Shared Channel, PDSCH)
Dynamic dispatching.
The embodiment of the present invention finds during realizing the embodiment of the present invention: Cell Edge User can be subject to
Stronger interference, it is low that UE receives system information success rate, causes the failure of UE resolution system information, UE
Resident difficulty also cannot normally work.
Summary of the invention
Embodiments provide a kind of system information sending method and evolved base station, reduce minizone
Interference, improve UE receive system information success.
A kind of system information sending method, including:
The management OM configuration of evolved base station read operation obtains Physical Cell Identifier PCI；Described PCI exists
Time allocated, the PCI of neighbor cell is different；
The frequency range corresponding with PCI is selected to send system information according to the PCI read.
A kind of evolved base station, including:
PCI reads unit 401, obtains Physical Cell Identifier PCI for read operation management OM configuration；
Described PCI is when allocated, and the PCI of neighbor cell is different；
System information transmitting element 402, for selecting the frequency range corresponding with PCI to send out according to the PCI read
Send system information.
As can be seen from the above technical solutions, the embodiment of the present invention has the advantage that neighbor cell uses
Different frequency ranges sends system information, to reduce presence of intercell interference, improves UE and receives the success of system information
Rate.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, in embodiment being described below
The required accompanying drawing used is briefly introduced, it should be apparent that, the accompanying drawing in describing below is only this
Some bright embodiments, from the point of view of those of ordinary skill in the art, are not paying creative work
On the premise of, it is also possible to other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is embodiment of the present invention method flow schematic diagram；
Fig. 2 is embodiment of the present invention other method schematic flow sheet；
Fig. 3 is that embodiment of the present invention PCI distributes schematic diagram；
Fig. 4 is the embodiment of the present invention the first evolved base station structural representation；
Fig. 5 is the embodiment of the present invention the second evolved base station structural representation；
Fig. 6 is the embodiment of the present invention the 3rd evolved base station structural representation；
Fig. 7 is the embodiment of the present invention the 4th evolved base station structural representation；
Fig. 8 is the embodiment of the present invention the 5th evolved base station structural representation.
Detailed description of the invention
In order to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to this
Invention is described in further detail, it is clear that described embodiment is only that some of the present invention is implemented
Example rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art exist
Do not make all other embodiments obtained under creative work premise, broadly fall into present invention protection
Scope.
First technical problem is analyzed during realizing the embodiment of the present invention by inventor, specifically
As follows: owing to SIBs transmits on PDSCH, and frequency domain position is dynamically distribution, evolved base station
Unified allocation algorithm is used in (evolved Node B, eNB), if each cell configuration is identical, little
District does not has UE to access when setting up, the PDSCH of each community when eNB sends system information to UE
Channel does not also have occupied, therefore each community be SIBs distribution running time-frequency resource be identical, the least
Area edge user can be caused the failure of UE resolution system information by stronger interference, and the resident difficulty of UE is also
Cannot normally work.
Analyze based on above, embodiments provide a kind of system information sending method, such as Fig. 1 institute
Show, including:
101: the management OM configuration of evolved base station read operation obtains Physical Cell Identifier PCI；Above-mentioned PCI
When allocated, the PCI of neighbor cell is different；
It should be noted that the PCI of community can be disposed in evolved base station, it is not absolutely required to
Evolved base station is calculated.
Alternatively, in above-mentioned 101, PCI is when allocated, and the PCI difference of neighbor cell includes: use
PCI allocation algorithm is that PCI is distributed in each community, makes the PCI of each neighbor cell different.It should be noted that for
The PCI of each neighbor cell of guarantee is different, and optional algorithm may have a lot, and the embodiment of the present invention is to this not
Give restriction.
Alternatively, in above-mentioned 101, the PCI difference of each neighbor cell includes: ground floor and the second layer
The PCI of adjacent area is different, the value of co-sited cell PCI is different from the modulus value of 3, and little in multiplex distance
Interval PCI is different；Above-mentioned ground floor is: evolved with the evolved base station direct neighbor as benchmark
Community under base station；The above-mentioned second layer is: and one the evolved base in evolved base station interval as benchmark
Community under the evolved base station stood；Above-mentioned multiplex distance is mutual spacing from for the adjacent area of more than two layers.
It should be noted that the above design conditions only used with regard to algorithm are illustrated, as long as phase can be reached
The purpose different for PCI of adjacent cell, it is also possible to have a variety of plan of establishment, the embodiment of the present invention is to this not
Give restriction.
102: select the frequency range corresponding with PCI to send system information according to the PCI read.
In embodiment of the present invention method, neighbor cell uses different frequency ranges to send system information, to reduce
Presence of intercell interference, improves UE and receives the success rate of system information.
Need exist for explanation is that system information typically can be transmitted in the way of using broadcast.
Alternatively, the PCI that above-mentioned foundation reads selects the frequency range corresponding with PCI to send system information bag
Include: if the value of the PCI read with 3 modulus value be 0, then select first frequency range send system information；If
The value of the PCI read and the modulus value of 3 are 1, then select the second frequency range to send system information；If reading
The value of PCI and the modulus value of 3 be 2, then select the 3rd frequency range to send system information.It should be noted that this
Sending method is that the condition that value based on above-mentioned co-sited cell PCI is different from the modulus value of 3 is carried out, if
Have employed other conditions in the algorithm of 101 steps, transmission mode given in this paragraph also can be revised, only
" to select the frequency range corresponding with PCI " the most permissible, it is also possible to use Inter-Cell Interference Coordination (Inter-Cell
Interference Coordination, ICIC) scheduling algorithm realizes, and implementation the most given in this paragraph is not
It is interpreted as the unique restriction to the embodiment of the present invention.
Alternatively, in above-mentioned 102, the frequency range corresponding with PCI includes: the PCI of adjacent community is corresponding
Frequency range be orthogonal high interference sensitivity frequency band.
Further, in above-mentioned 101, read operation management OM configuration obtains Physical Cell Identifier PCI
The most also comprise determining whether to open interference coordination function, the most then select high power interference sensitivity
Frequency band sends system information；If it is not, then perform: read operation management OM configuration obtains physical area mark
Know PCI.
Such as Fig. 2, shown in Fig. 3, the embodiment of the present invention will be with timesharing Long Term Evolution (Time Division Long Term
Evolution, TD-LTE) under system information send as a example by illustrate, including:
201: distribution SIB frequency resource.
The embodiment of the present invention proposes neighbor cell and uses different frequency range to send SIBs information, solves limit, community
The problem of edge SIBs demodulation difficulty, concrete grammar is as follows: be firstly introduced into Physical Cell Identifier (Physical Cell
Identifier, PCI) principle of allocation algorithm, network planning PCI algorithm.PCI in TD-LTE is altogether
504, in TD-LTE system, strong jamming will be caused if there is with frequency with PCI.And it is limited to mesh
The available frequency band of front TD-LTE, TD-LTE is likely to take the mode of identical networking, and this makes PCI advise
Draw particularly important.PCI plans and can meet some restriction following:
1, the PCI of first, second layer of adjacent area use to ensure to reuse.
Note: reuse to as if PCI, namely: first and second layer of adjacent area can not use identical PCI, first
Layer adjacent area refers in below figure 3, and community (Cell) 1-6 is one layer of adjacent area of community 0, and two layers just
It it is again one layer, outside
2, the value of the value mould 3 of the PCI of co-sited cell is different.
3, in multiplex distance, the PCI of community is different.Multiplex distance, refers to the reusable distance of PCI,
It is typically no less than the distance of two layers of adjacent area.
202: judge whether to open the algorithm of interference coordination function, if it is, enter 203, otherwise enter
Enter 204.
Whether open interference coordination judgement can according to operation management (Operations Management,
OM) configuration determines.
As it is shown on figure 3, wherein white filling part is divided into low interference sensitive bands.Positive square net is filled out
Fill part for doing interference sensitive bands.
203: obtain the PCI of community.
204: select high power interference band to send system information.This step can avoid the same frequency of minizone
Interference.
205: calculate Fn；
If system is not turned on the algorithm of interference coordination function, according to the algorithm of PCI distribution, due to phase
Adjacent cell PCI value is different, and the value of the value mould 3 of co-sited cell PCI is different, according to this feature,
The frequency range that community uses can be divided into 3 sections, be respectively labeled as F0, F1, F2, and community is at scheduling SIBs
The when of information, select the frequency range of SIBs transmission according to the value of the PCI of community, it may be assumed that
Fn=PCI mod 3；If Fn=0, then frequency range F0 is selected to send SIBs；If Fn=1, then select
Select frequency range F1 and send SIBs；If Fn=2, then frequency range F2 is selected to send SIBs.Referring particularly to 206～211.
As it is shown on figure 3, oblique line filling part, oblique square filling part are divided into other two kinds of optional frequency bands.
206: judge Fn=0？It is to enter 207, otherwise enters 208.
207: select frequency range F0 to send system information.
208: judge Fn=1？It is to enter 209, otherwise enters 210.
209: select frequency range F1 to send system information.
210: judge Fn=2？It is to enter 211.This step can be without carrying out being directly judged as 208
211 are performed time no.
211: select frequency range F2 to send system information.
Above-mentioned 207,209 or 211 perform to send system information terminates flow process.
In embodiment of the present invention method, neighbor cell uses different frequency ranges to send system information, to reduce
Presence of intercell interference, improves UE and receives the success rate of system information.
The embodiment of the present invention additionally provides a kind of evolved base station, as shown in Figure 4, and including:
PCI reads unit 401, obtains Physical Cell Identifier PCI for read operation management OM configuration；
Above-mentioned PCI is when allocated, and the PCI of neighbor cell is different；
System information transmitting element 402, for selecting the frequency range corresponding with PCI to send out according to the PCI read
Send system information.
In the embodiment of the present invention, neighbor cell uses different frequency ranges to send system information, to reduce community
Between disturb, improve UE receive system information success rate.
Further, as it is shown in figure 5, above-mentioned evolved base station, also include:
PCI allocation unit 501, being used for using PCI allocation algorithm is that PCI is distributed in each community, makes each adjacent
The PCI of community is different.
Alternatively, above-mentioned PCI allocation unit 501, is each little differentiation specifically for using PCI allocation algorithm
Join PCI, make that ground floor is different from the PCI of the adjacent area of the second layer, the value of co-sited cell PCI with 3 mould
Value difference, and the minizone PCI in multiplex distance is different；
Above-mentioned ground floor is: little with under the evolved base station as the evolved base station direct neighbor of benchmark
District；The above-mentioned second layer is: and as benchmark evolved base station be spaced an evolved base station evolved
Community under base station；Above-mentioned multiplex distance is mutual spacing from for the adjacent area of more than two layers.
Alternatively, as shown in Figure 6, said system information transmitting unit 402 includes:
Magnitude calculation unit 601, for calculating the value of PCI and the modulus value of 3；
System information sends subelement 602, if the value of PCI and the modulus value of 3 for reading are 0, then
The first frequency range is selected to send system information；If the value of the PCI read with 3 modulus value be 1, then select the
Two frequency ranges send system information；If the value of the PCI read with 3 modulus value be 2, then select the 3rd frequency range
Send system information.
Further, as it is shown in fig. 7, above-mentioned evolved base station, also include:
Bandwidth assignment unit 701, is used for distributing frequency band, makes the frequency range corresponding for PCI of adjacent community for just
The high interference sensitivity frequency band handed over.
Further, as shown in Figure 8, above-mentioned evolved base station, also include:
Function confirmation unit 801, for obtaining Physical Cell Identifier PCI in read operation management OM configuration
Before, it is determined whether open interference coordination function；
Said system information transmitting unit 402, is determined as if being additionally operable to function confirmation unit, then selects height
Power disturbance sensitive bands sends system information；
Above-mentioned PCI reads unit 401, is defined as no if being additionally operable to function confirmation unit, then perform: read
Operation management OM configuration obtains Physical Cell Identifier PCI.
It should be noted that in above-mentioned evolved base station embodiment, included unit simply according to
Function logic carries out dividing, but is not limited to above-mentioned division, as long as being capable of corresponding function
?；It addition, the specific name of each functional unit is also only to facilitate mutually distinguish, it is not used to limit
Protection scope of the present invention processed.
It addition, one of ordinary skill in the art will appreciate that realize whole in above-mentioned each method embodiment or
Part steps can be by program and completes to instruct relevant hardware, and corresponding program can be stored in one
In kind of computer-readable recording medium, storage medium mentioned above can be read only memory, disk or
CD etc..
These are only the present invention preferably detailed description of the invention, but protection scope of the present invention is not limited to
This, any those familiar with the art, can in the technical scope that the embodiment of the present invention discloses
The change readily occurred in or replacement, all should contain within protection scope of the present invention.Therefore, the present invention
Protection domain should be as the criterion with scope of the claims.
Claims (6)
1. a system information sending method, it is characterised in that including:
The management OM configuration of evolved base station read operation obtains Physical Cell Identifier PCI；Described PCI exists
Time allocated, using PCI allocation algorithm is that PCI is distributed in each community, makes the PCI of each neighbor cell different；
The PCI difference of described each neighbor cell includes:
Ground floor is different from the PCI of the adjacent area of the second layer, the value of co-sited cell PCI is different with the modulus value of 3
Different with the minizone PCI in multiplex distance；
Described ground floor is: little with under the evolved base station as the evolved base station direct neighbor of benchmark
District；The described second layer is: and as benchmark evolved base station be spaced an evolved base station evolved
Community under base station；Described multiplex distance is mutual spacing from for the adjacent area of more than two layers；
The frequency range corresponding with PCI is selected to send system information according to the PCI read, including:
If the value of the PCI read with 3 modulus value be 0, then select first frequency range send system information；
If the value of the PCI read with 3 modulus value be 1, then select second frequency range send system information；
If the value of the PCI read with 3 modulus value be 2, then select the 3rd frequency range send system information.
Method the most according to claim 1, it is characterised in that the described frequency range corresponding with PCI includes:
The frequency range corresponding for PCI of adjacent community is orthogonal high interference sensitivity frequency band.
Method the most according to claim 1, it is characterised in that described read operation management OM configuration
Also include before obtaining Physical Cell Identifier PCI:
Determine whether to open interference coordination function, the most then select high power interference sensitive bands to send
System information；If it is not, then perform: read operation management OM configuration obtains Physical Cell Identifier PCI.
4. an evolved base station, it is characterised in that including:
PCI reads unit 401, obtains Physical Cell Identifier PCI for read operation management OM configuration；
Described PCI is when allocated, and the PCI of neighbor cell is different；
System information transmitting element 402, for selecting the frequency range corresponding with PCI to send out according to the PCI read
Send system information；
PCI allocation unit, being used for using PCI allocation algorithm is that PCI is distributed in each community, makes each neighbor cell
PCI different；
Described PCI allocation unit, specifically for using PCI allocation algorithm to be, PCI is distributed in each community, makes
Ground floor is different from the PCI of the adjacent area of the second layer, the value of co-sited cell PCI is different with the modulus value of 3 and multiple
Different with the minizone PCI in distance；
Described ground floor is: little with under the evolved base station as the evolved base station direct neighbor of benchmark
District；The described second layer is: and as benchmark evolved base station be spaced an evolved base station evolved
Community under base station；Described multiplex distance is mutual spacing from for the adjacent area of more than two layers；
Described system information transmitting element 402 includes:
Magnitude calculation unit, for calculating the value of PCI and the modulus value of 3；
System information sends subelement, if the value of PCI and the modulus value of 3 for reading are 0, then selects
First frequency range sends system information；If the value of the PCI read with 3 modulus value be 1, then select second frequency
Section sends system information；If the value of the PCI read with 3 modulus value be 2, then select the 3rd frequency range send
System information.
Evolved base station the most according to claim 4, it is characterised in that also include:
Bandwidth assignment unit, is used for distributing frequency band, and the frequency range corresponding for PCI making adjacent community is orthogonal
High interference sensitivity frequency band.
Evolved base station the most according to claim 4, it is characterised in that also include:
Function confirmation unit, for read operation management OM configuration obtain Physical Cell Identifier PCI it
Before, it is determined whether open interference coordination function；
Described system information transmitting element 402, is determined as if being additionally operable to function confirmation unit, then selects height
Power disturbance sensitive bands sends system information；
Described PCI reads unit 401, is defined as no if being additionally operable to function confirmation unit, then perform: read
Operation management OM configuration obtains Physical Cell Identifier PCI.
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| CN201210076899.6A CN103326807B (en) | 2012-03-21 | 2012-03-21 | A kind of system information sending method and evolved base station |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104581649A (en) * | 2013-10-23 | 2015-04-29 | 普天信息技术有限公司 | LTE cluster system frequency band selection method and device |
| CN103747445B (en) | 2014-01-27 | 2017-10-03 | 上海大唐移动通信设备有限公司 | A kind of method and apparatus for distributing Physical Cell Identifier |
| CN108234683B (en) * | 2016-12-15 | 2020-12-25 | 普天信息技术有限公司 | PCI (peripheral component interconnect) adjusting method and device under pilot frequency networking |
| CN112689330A (en) * | 2019-10-18 | 2021-04-20 | 中兴通讯股份有限公司 | Method, base station and system for inhibiting cell co-frequency interference |
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| WO2009120137A1 (en) * | 2008-03-25 | 2009-10-01 | Telefonaktiebolaget L M Ericsson (Publ) | Method for automatically selecting a physical cell identity (pci) of a long term evolution (lte) radio. cell |
| CN101730310A (en) * | 2008-10-31 | 2010-06-09 | 华为技术有限公司 | Method for distributing cell physical layer identifiers, device and system |
| CN101888622A (en) * | 2009-05-14 | 2010-11-17 | 株式会社Ntt都科摩 | Method and device for distributing physical layer cell identifiers |
| CN102026168A (en) * | 2010-12-29 | 2011-04-20 | 大唐移动通信设备有限公司 | Method and equipment for distributing physical cell ID |
| CN102111918A (en) * | 2009-12-25 | 2011-06-29 | 电信科学技术研究院 | Survey information configuration method and system and base station |
| CN102202338A (en) * | 2010-03-23 | 2011-09-28 | 中兴通讯股份有限公司 | Method and system for reporting cell type |
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| WO2009120137A1 (en) * | 2008-03-25 | 2009-10-01 | Telefonaktiebolaget L M Ericsson (Publ) | Method for automatically selecting a physical cell identity (pci) of a long term evolution (lte) radio. cell |
| CN101730310A (en) * | 2008-10-31 | 2010-06-09 | 华为技术有限公司 | Method for distributing cell physical layer identifiers, device and system |
| CN101888622A (en) * | 2009-05-14 | 2010-11-17 | 株式会社Ntt都科摩 | Method and device for distributing physical layer cell identifiers |
| CN102111918A (en) * | 2009-12-25 | 2011-06-29 | 电信科学技术研究院 | Survey information configuration method and system and base station |
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