CN102869022A - Method and device for allocating physical cell identifiers (PCIs) of wireless network - Google Patents
Method and device for allocating physical cell identifiers (PCIs) of wireless network Download PDFInfo
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- CN102869022A CN102869022A CN2012102978984A CN201210297898A CN102869022A CN 102869022 A CN102869022 A CN 102869022A CN 2012102978984 A CN2012102978984 A CN 2012102978984A CN 201210297898 A CN201210297898 A CN 201210297898A CN 102869022 A CN102869022 A CN 102869022A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W8/00—Network data management
- H04W8/26—Network addressing or numbering for mobility support
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Abstract
The invention discloses a method and a device for allocating physical cell identifiers (PCIs) of a wireless network. The method comprises the following steps of: when the PCIs are required to be allocated to a cell of a base station, counting the using frequencies of all PCIs in a neighboring base station searching range of the base station; and judging the PCIs from a PCI with the minimum using frequency, if the using frequency of the PCI is zero, allocating the PCI to the cell, and if the using frequency of the PCI is not zero, selecting a PCI which is not used by other cells of the base station, meets a preset distance requirement, is not used by a neighboring base station of the base station and is not used by a neighboring base station of the neighboring base station of the base station, and allocating the PCI to the cell. By the method and the device, the PCIs can be rapidly and effectively allocated to the base station, and the shortcoming of insufficient physical identifier resources is overcome simultaneously.
Description
Technical field
The present invention relates to communication technique field, relate in particular to a kind of distribution method and device of wireless network cell physical label.
Background technology
The PCI(physical cell identity) be an important configuration parameters of wireless area, its compound orthogonal sequence and pseudo random sequence number and obtain have 504 physical labels.
Because the PCI limited amount, inevitably to carry out these PCI multiplexingly in the realistic set network process, this just may produce certain conflict or obscure.When having the PCI conflict in the network, the signal meeting phase mutual interference of minizone causes base station and terminal that the success rate of signal demodulation is descended the traffic affecting quality.Can cause what is more terminal to access, cause user's complaint.When existing PCI to obscure in the network, can affect the success rate of switching, cause certain customers' handoff failure, affect serious PCI and obscure, can cause equally a large amount of complaints of user.
At present, for just avoiding occurring in the network PCI conflict how for cell allocation PCI or obscuring, perfect solution is arranged not yet.
Summary of the invention
In view of above-mentioned analysis, the present invention aims to provide a kind of distribution method and device of wireless network cell physical label, in order to solve the problem that occurs the PCI conflict in the network or obscure.
Purpose of the present invention mainly is achieved through the following technical solutions:
The invention provides the distribution method of a kind of wireless network cell physical label PCI, comprising:
When need to be to the cell allocation PCI of base station, the access times of all PCI of statistics in the adjacent base station search scope of this base station;
Minimum PCI begins to judge from access times, if the access times of this PCI are 0, then this PCI is distributed to this residential quarter; Otherwise select other residential quarters, this base station not use, and satisfy the equal PCI of use not in adjacent base station of the adjacent base station of the adjacent base station of preset distance condition and this base station and this base station, distribute to this residential quarter.
Further, the method also comprises: in advance PCI is carried out segmentation, wherein one section writes in the predetermined distribution list the artificial PCI that reserves of another section conduct as assignable PCI.
Further, the method also comprises:
When one of following situation occurs, the PCI that manually reserves is distributed to this residential quarter:
All PCI in the described distribution list are used by other residential quarters of this base station;
Still there is PCI not used by other residential quarters of this base station in the described distribution list, but used by the residential quarter of the adjacent base station of this base station;
Still there is PCI not used by other residential quarters of this base station in the described distribution list, and also do not used by the residential quarter of the adjacent base station of this base station, but used by the residential quarter of the adjacent base station of the adjacent base station of this base station.
Further, described adjacent base station search scope refers to the predefined scope that the adjacent base station of this base station periphery is searched for, when it arranges separately for the adjacent base station search scope of each base station sets or be simultaneously the adjacent base station search scopes of a plurality of base station sets.If be the adjacent base station search scopes of a plurality of base station sets simultaneously, then the density degree according to the base station is divided into a plurality of zones to network, and each zone is with square represents and the longitude and latitude of this regional location by square two diagonal end points represents; If the base station, place, residential quarter of PCI to be allocated is positioned at square region, then described adjacent base station search scope is the search radius of this base station in this square zone; If the base station, place, residential quarter of PCI to be allocated is positioned at outside the square region, then described adjacent base station search scope is the default search radius in this base station.
Further, describedly satisfy the preset distance condition and refer to that distance between this base station and the adjacent base station is greater than predetermined multiplex distance.
The present invention also provides the distributor of a kind of wireless network cell physical label PCI, comprising:
Statistical module is used for need to be to the cell allocation PCI of base station the time access times of all PCI of statistics in the adjacent base station search scope of this base station;
Distribution module is used for beginning to judge from the minimum PCI of access times, if the access times of this PCI are 0, then this PCI is distributed to this residential quarter; Otherwise select other residential quarters, this base station not use, and satisfy the equal PCI of use not in adjacent base station of the adjacent base station of the adjacent base station of preset distance condition and this base station and this base station, distribute to this residential quarter.
Further, this device also comprises:
The preassignment module is used in advance PCI being carried out segmentation, and wherein one section writes in the predetermined distribution list the artificial PCI that reserves of another section conduct as assignable PCI.
Further, described distribution module also is used for,
When one of following situation occurs, the PCI that manually reserves is distributed to this residential quarter:
All PCI in the described distribution list are used by other residential quarters of this base station;
Still there is PCI not used by other residential quarters of this base station in the described distribution list, but used by the residential quarter of the adjacent base station of this base station;
Still there is PCI not used by other residential quarters of this base station in the described distribution list, and also do not used by the residential quarter of the adjacent base station of this base station, but used by the residential quarter of the adjacent base station of the adjacent base station of this base station.
Further, described adjacent base station search scope refers to the predefined scope that the adjacent base station of this base station periphery is searched for, when it arranges separately for the adjacent base station search scope of each base station sets or be simultaneously the adjacent base station search scopes of a plurality of base station sets.
Beneficial effect of the present invention is as follows:
The present invention guaranteed fast and effectively for base station assigns to the residential quarter physical token, remedied simultaneously the deficiency of physical label resource.
Other features and advantages of the present invention will be set forth in the following description, and becoming apparent from specification of part perhaps understood by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of writing, claims and accompanying drawing.
Description of drawings
Fig. 1 is among the present invention, the schematic flow sheet of embodiment of the method;
Fig. 2 is among the present invention, the schematic flow sheet of method for optimizing embodiment;
Fig. 3 is in the embodiment of the invention, the schematic diagram of adjacent base station;
Fig. 4 is among the present invention, the structural representation of device embodiment.
Embodiment
Specifically describe the preferred embodiments of the present invention below in conjunction with accompanying drawing, wherein, accompanying drawing consists of the application's part, and is used for explaining together with embodiments of the present invention principle of the present invention.
1 to 3 pair of described method of the embodiment of the invention is elaborated at first, by reference to the accompanying drawings.
As shown in Figure 1, Fig. 1 is the schematic flow sheet of the described method of the embodiment of the invention, specifically can comprise:
Step 101: when need to be to the cell allocation PCI of base station, the access times of all PCI of statistics in the adjacent base station search scope of this base station;
Step 102: minimum PCI begins to judge from access times, if the access times of this PCI are 0, then this PCI is distributed to this residential quarter; Otherwise select other residential quarters, this base station not use, and satisfy the equal PCI of use not in adjacent base station of the adjacent base station of the adjacent base station of preset distance condition and this base station and this base station, distribute to this residential quarter.
As shown in Figure 2, Fig. 2 is the schematic flow sheet of the preferred embodiment of the method for the present invention, before the distribution of carrying out PCI, the self-configuring network management device needs in advance PCI to be carried out segmentation, wherein one section writes in the predetermined distribution list as assignable PCI, the artificial PCI that reserves of another section conduct determines adjacent base station search scope simultaneously, and then the method specifically can comprise:
Step 201: for certain cell x of the base station X of PCI to be allocated, in the adjacent base station search scope of self-configuring network management device accounting base-station X, the access times of all PCI in the predetermined distribution list;
Step 202: from the minimum PCI of access times, judge whether the access times of this PCI are 0, if so, forward step 208 to; If not, execution in step 203;
Step 203: successively the base station of using this PCI is handled as follows:
Step 204: whether judge the distance of base station Y and cell x place base station X greater than predetermined multiplex distance (setting as the case may be, for example the density degree of base station), if so, execution in step 205; If not, this PCI is unavailable, forwards step 209 to;
Step 205: judge whether base station Y is the base station X at cell x place, if not, execution in step 206; If so, this PCI is unavailable, forwards step 209 to;
Step 206: according to the adjacent base station information of base station X, judge whether this base station Y is the adjacent base station of cell x place base station X, if not, execution in step 207; If so, this PCI is unavailable, execution in step 209;
Step 207: judge whether base station Y is the adjacent base station of the adjacent base station of cell x place base station X, if not, execution in step 208; If so, this PCI is unavailable, forwards step 209 to;
Step 208: judge to use the base station of this PCI whether to travel through:
If finish, illustrate that this PCI can use, select this PCI as the PCI of cell x, what the self-configuring network management device showed this residential quarter use is the access times of this PCI and this PCI; Otherwise, the next one is used the base station (for example base station Z) of this PCI carry out since step 205, until choose operable PCI;
Step 209: judge whether all PCI in the distribution list have traveled through:
If traveled through, illustrate that this PCI selects unsuccessfully, select the PCI of artificial reservation, that the self-configuring network management device shows the residential quarter use is the artificial PCI that reserves; If do not traveled through, the next PCI in the distribution list is begun to carry out from step 202.
Wherein, when the self-configuring network management device is searched for the adjacent base station of all base stations according to longitude and latitude, whether in fact it be exactly to judge between two base stations whether other base station is arranged when judging whether to be adjacent base station, namely have the residential quarter of other base station to intercept between the residential quarter of two base stations.When base station X is positioned at the region of search, the distance in calculation base station X and the zone between other base stations, what distance was the shortest is exactly the adjacent base station of base station X.
Whether adjacent base station need to be determined according to adjacent base station decision method in other base stations, specifically as shown in Figure 3.From the inferior station Y far away of distance X, as long as have in the diamond-shaped area of base station location between base station X and base station Y, namely thinking has other base station between two base stations, and these two base stations are not adjacent base stations just.Wherein angle [alpha] can configure.In fact be exactly the angle of judging between straight line XZ, the XY, and whether the angle between straight line YZ, the YX is all less than α.If less than α, Y is not the adjacent base station of X just so, otherwise is exactly the adjacent base station of X.
Adjacent base station search scope refers to the predefined scope that the adjacent base station of this base station periphery is searched for, when determining adjacent base station search scope, can be separately the adjacent base station search scope of each base station sets or be simultaneously a plurality of base station sets neighbour base station search scopes; If be simultaneously the adjacent base station search scopes of a plurality of base station sets, the density degree during then according to the cloth station of base station is divided into a plurality of zones to network, and each zone is with square represents and the longitude and latitude of this regional location by square two diagonal end points represents; If the base station, place, residential quarter of PCI to be allocated is positioned at square region, then described adjacent base station search scope is the search radius of this base station in this square zone; If the base station, place, residential quarter of PCI to be allocated is positioned at outside the square region, then described adjacent base station search scope is the default search radius in this base station.
More than be the preferred embodiment of the method for the present invention, in fact, the present invention also can arrange the hunting zone in implementation procedure, set all base stations and all give tacit consent in same adjacent base station search zone, can guarantee that like this PCI in this neighbour's base station search zone does not conflict or obscures; Also can to the PCI segmentation, namely distribute with all PCI.
Next 4 pairs of described devices of the embodiment of the invention are elaborated by reference to the accompanying drawings.
As shown in Figure 4, Fig. 4 is the structural representation of the described device of the embodiment of the invention, specifically can comprise:
All PCI in the distribution list are used by other residential quarters of this base station;
Still there is PCI not used by other residential quarters of this base station in the distribution list, but used by the residential quarter of the adjacent base station of this base station;
Still there is PCI not used by other residential quarters of this base station in the distribution list, and also do not used by the residential quarter of the adjacent base station of this base station, but used by the residential quarter of the adjacent base station of the adjacent base station of this base station;
When the self-configuring network management device is searched for the adjacent base station of all base stations according to longitude and latitude, whether in fact it be exactly to judge between two base stations whether other base station is arranged when judging whether to be adjacent base station, namely have the residential quarter of other base station to intercept between the residential quarter of two base stations.When base station X is positioned at the region of search, the distance in calculation base station X and the zone between other base stations, what distance was the shortest is exactly the adjacent base station of base station X.
Whether adjacent base station need to be determined according to adjacent base station decision method in other base stations, specifically as shown in Figure 3.From the inferior station Y far away of distance X, as long as have in the diamond-shaped area of base station location between base station X and base station Y, namely thinking has other base station between two base stations, and these two base stations are not adjacent base stations just.Wherein angle [alpha] can configure.In fact be exactly the angle of judging between straight line XZ, the XY, and whether the angle between straight line YZ, the YX is all less than α.If less than α, Y is not the adjacent base station of X just so, otherwise is exactly the adjacent base station of X.
Adjacent base station search scope refers to the predefined scope that the adjacent base station of this base station periphery is searched for, when determining adjacent base station search scope, can be separately the adjacent base station search scope of each base station sets or be simultaneously a plurality of base station sets neighbour base station search scopes; If be simultaneously the adjacent base station search scopes of a plurality of base station sets, the density degree during then according to the cloth station of base station is divided into a plurality of zones to network, and each zone is with square represents and the longitude and latitude of this regional location by square two diagonal end points represents; If the base station, place, residential quarter of PCI to be allocated is positioned at square region, then described adjacent base station search scope is the search radius of this base station in this square zone; If the base station, place, residential quarter of PCI to be allocated is positioned at outside the square region, then described adjacent base station search scope is the default search radius in this base station.
In sum, the embodiment of the invention provides a kind of distribution method and device of wireless network cell physical label, namely guaranteed fast and effectively for base station assigns to the residential quarter physical token, remedied simultaneously the deficiency of physical label resource, especially to the distribution of the physical cell identity of opening on a large scale when station, effect is more remarkable.
The above; only for the better embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
Claims (10)
1. the distribution method of a wireless network cell physical label PCI is characterized in that, comprising:
When need to be to the cell allocation PCI of base station, the access times of all PCI of statistics in the adjacent base station search scope of this base station;
Minimum PCI begins to judge from access times, if the access times of this PCI are 0, then this PCI is distributed to this residential quarter; Otherwise select other residential quarters, this base station not use, and satisfy the equal PCI of use not in adjacent base station of the adjacent base station of the adjacent base station of preset distance condition and this base station and this base station, distribute to this residential quarter.
2. method according to claim 1 is characterized in that, also comprises: in advance PCI is carried out segmentation, wherein one section writes in the predetermined distribution list the artificial PCI that reserves of another section conduct as assignable PCI.
3. method according to claim 2 is characterized in that, also comprises:
When one of following situation occurs, the PCI that manually reserves is distributed to this residential quarter:
All PCI in the described distribution list are used by other residential quarters of this base station;
Still there is PCI not used by other residential quarters of this base station in the described distribution list, but used by the residential quarter of the adjacent base station of this base station;
Still there is PCI not used by other residential quarters of this base station in the described distribution list, and also do not used by the residential quarter of the adjacent base station of this base station, but used by the residential quarter of the adjacent base station of the adjacent base station of this base station.
4. method according to claim 1, it is characterized in that, described adjacent base station search scope refers to the predefined scope that the adjacent base station of this base station periphery is searched for, when it arranges separately for the adjacent base station search scope of each base station sets or be simultaneously the adjacent base station search scopes of a plurality of base station sets.
5. method according to claim 4, it is characterized in that, if be simultaneously the adjacent base station search scopes of a plurality of base station sets, then the density degree according to the base station is divided into a plurality of zones to network, and each zone is with square represents and the longitude and latitude of this regional location by square two diagonal end points represents; If the base station, place, residential quarter of PCI to be allocated is positioned at square region, then described adjacent base station search scope is the search radius of this base station in this square zone; If the base station, place, residential quarter of PCI to be allocated is positioned at outside the square region, then described adjacent base station search scope is the default search radius in this base station.
6. method according to claim 1 is characterized in that, describedly satisfies the preset distance condition and refers to that distance between this base station and the adjacent base station is greater than predetermined multiplex distance.
7. the distributor of a wireless network cell physical label PCI is characterized in that, comprising:
Statistical module is used for need to be to the cell allocation PCI of base station the time access times of all PCI of statistics in the adjacent base station search scope of this base station;
Distribution module is used for beginning to judge from the minimum PCI of access times, if the access times of this PCI are 0, then this PCI is distributed to this residential quarter; Otherwise select other residential quarters, this base station not use, and satisfy the equal PCI of use not in adjacent base station of the adjacent base station of the adjacent base station of preset distance condition and this base station and this base station, distribute to this residential quarter.
8. distributor according to claim 7 is characterized in that, also comprises:
The preassignment module is used in advance PCI being carried out segmentation, and wherein one section writes in the predetermined distribution list the artificial PCI that reserves of another section conduct as assignable PCI.
9. method according to claim 8 is characterized in that, described distribution module also is used for,
When one of following situation occurs, the PCI that manually reserves is distributed to this residential quarter:
All PCI in the described distribution list are used by other residential quarters of this base station;
Still there is PCI not used by other residential quarters of this base station in the described distribution list, but used by the residential quarter of the adjacent base station of this base station;
Still there is PCI not used by other residential quarters of this base station in the described distribution list, and also do not used by the residential quarter of the adjacent base station of this base station, but used by the residential quarter of the adjacent base station of the adjacent base station of this base station.
10. device according to claim 7, it is characterized in that, described adjacent base station search scope refers to the predefined scope that the adjacent base station of this base station periphery is searched for, when it arranges separately for the adjacent base station search scope of each base station sets or be simultaneously the adjacent base station search scopes of a plurality of base station sets.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102978984A CN102869022A (en) | 2012-08-21 | 2012-08-21 | Method and device for allocating physical cell identifiers (PCIs) of wireless network |
| PCT/CN2013/081452 WO2014029290A1 (en) | 2012-08-21 | 2013-08-14 | Method and device for allocating physical cell identity of wireless network |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102978984A CN102869022A (en) | 2012-08-21 | 2012-08-21 | Method and device for allocating physical cell identifiers (PCIs) of wireless network |
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| CN102869022A true CN102869022A (en) | 2013-01-09 |
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| CN2012102978984A Pending CN102869022A (en) | 2012-08-21 | 2012-08-21 | Method and device for allocating physical cell identifiers (PCIs) of wireless network |
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Cited By (4)
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| WO2014029290A1 (en) * | 2012-08-21 | 2014-02-27 | 中兴通讯股份有限公司 | Method and device for allocating physical cell identity of wireless network |
| CN104219677A (en) * | 2013-05-31 | 2014-12-17 | 普天信息技术研究院有限公司 | Method for planning physical cell identifiers |
| CN105792162A (en) * | 2014-12-24 | 2016-07-20 | 成都鼎桥通信技术有限公司 | Cell parameter configuration method in mobile communication system and mobile base station |
| WO2016206194A1 (en) * | 2015-06-23 | 2016-12-29 | 中兴通讯股份有限公司 | Method, device and computer storage medium for base station networking |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9781752B2 (en) | 2014-11-13 | 2017-10-03 | Wipro Limited | Systems and methods for effective physical cell identifier reuse |
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- 2012-08-21 CN CN2012102978984A patent/CN102869022A/en active Pending
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- 2013-08-14 WO PCT/CN2013/081452 patent/WO2014029290A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2014029290A1 (en) * | 2012-08-21 | 2014-02-27 | 中兴通讯股份有限公司 | Method and device for allocating physical cell identity of wireless network |
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| CN104219677B (en) * | 2013-05-31 | 2017-12-08 | 普天信息技术研究院有限公司 | A kind of method of Physical Cell Identifier planning |
| CN105792162A (en) * | 2014-12-24 | 2016-07-20 | 成都鼎桥通信技术有限公司 | Cell parameter configuration method in mobile communication system and mobile base station |
| CN105792162B (en) * | 2014-12-24 | 2019-04-16 | 成都鼎桥通信技术有限公司 | Cell parameter configuration method and mobile base station in mobile communication system |
| WO2016206194A1 (en) * | 2015-06-23 | 2016-12-29 | 中兴通讯股份有限公司 | Method, device and computer storage medium for base station networking |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014029290A1 (en) | 2014-02-27 |
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