CN102075957A - Neighbor cell processing method and device for cell - Google Patents
Neighbor cell processing method and device for cell Download PDFInfo
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- CN102075957A CN102075957A CN2009101098468A CN200910109846A CN102075957A CN 102075957 A CN102075957 A CN 102075957A CN 2009101098468 A CN2009101098468 A CN 2009101098468A CN 200910109846 A CN200910109846 A CN 200910109846A CN 102075957 A CN102075957 A CN 102075957A
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Abstract
The invention discloses a neighbor cell processing method and a neighbor cell processing device for a cell. The method comprises the following steps of: determining sub-cells, namely determining cell space sub-cells with different neighbor cell relationships in the cell; and controlling the neighbor cells, namely controlling the neighbor cells according to the cell space sub-cells. The device comprises a sub-cell determining module and a neighbor cell controlling module, wherein the sub-cell determining module determines the cell space sub-cells with different neighbor cell relationships in the cell; and the neighbor cell controlling module controls the neighbor cells according to the cell space sub-cells. The cell space sub-cells with different neighbor cell relationships are determined in the cell and relative control over the neighbor cells is performed on the basis of the determined cell space sub-cells, so that the neighbor cell relationships of the cell can be simplified, and the load of measuring and controlling the neighbor cells by a terminal is reduced.
Description
Technical field
The present invention relates to moving communicating field, specifically, relate to a kind of adjacent area processing method and device of sub-district.
Background technology
Beehive net is the most basic network coverage of a present mobile communication topology mode, and Fig. 1 is a kind of cellular network of common clover form, among the figure with hexagon signal sub-district, with triangle schematic diagram base station.Can see that A, B, C are three cellular cells under the same base station.
Among Fig. 1, B, C, D, E, F, the G that the adjacent area of sub-district A comprises first lap on every side be totally 6 sub-districts.But in the network environment of dense city, for covering and the capacity requirement that satisfies the high density user, the more crypto set that the base station is built, distance between the sub-district is also littler, the sub-district of second, third circle also may more or less influence each other with sub-district A existence around the A of sub-district, so just may have neighboring BS relationship with sub-district A.
Because factors such as topography and geomorphology, building construction, antenna for base station placement, in real network, the topological structure of each sub-district is the honeycomb shape that shows of image pattern 1 rule so not necessarily, the neighboring BS relationship of sub-district A can be as so not apparent among Fig. 1 yet, but need determine by field exploring and the network planning, optimization.Under some complicated actual scene, the adjacent area can be more, and neighboring BS relationship can be more complicated.
As mentioned above, in the dense city network environment, the neighboring BS relationship of sub-district can more complicated.If occur cell splitting, Hierarchical Network (HCS in the network again, Hierarchical Cell Structure, layered cell structure, usually be also referred to as Hierarchical Network), situation such as 2G and 3G different systems communication system mixed networking, so, sub-district in the network more crypto set that will become, it is more that the adjacent area of sub-district can become, and it is more complicated that neighboring BS relationship also can become.At this moment, except needing the base station to cell configuration, optimization, renewal and huge neighboring BS relationship off-balancesheet of maintenance, also need user terminal (UE, User Equipment) can possess very strong ability and support real-time nearby region measurement and processing, the adjacent area number is many more, measurement and processing load are big more, and this has become a bottleneck of terminal; In addition, in the numerous network in adjacent area, switch the minizone gravity treatment of terminal and minizone also may become very frequent, but also gravity treatment that may cause confusion and switching, the problem that this not only brings communication quality to descend to terminal also can be brought the problem of disturbing degradation aspect under lifting, the network performance to the peripheral region.
Summary of the invention
In view of above-mentioned background, the invention provides a kind of adjacent area processing method and device of sub-district, can simplify the sub-district neighboring BS relationship, alleviate the nearby region measurement of terminal and handle burden.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of adjacent area processing method of sub-district comprises:
Subregion is determined: determine the sub-district space partition zone with different neighboring BS relationship in the sub-district;
Adjacent area control: carry out adjacent area control according to described sub-district space partition zone.
In a kind of embodiment of said method, described subregion is determined to comprise:
Subregion is divided: according to the identification of base stations ability initial sub-district space partition zone is carried out in the sub-district and divide;
Subregion exploration: each initial sub-district space partition zone is carried out the network exploration, determine the neighboring BS relationship of the sub-district space partition zone that each is initial;
Subregion is simplified: the initial sub-district space partition zone that will have identical neighboring BS relationship merges, and finally determines the sub-district space partition zone with different neighboring BS relationship.
In a kind of embodiment of said method, described subregion is divided and is comprised: discern behind base station self identification or the terminal to report base station, wherein,
Base station self identification comprises: the distinguishing cell space partition zone is come by the azimuth of smart antenna identification different districts space partition zone in the base station, and perhaps the antenna that covering belonged to by spaced antenna identification different districts space partition zone comes the distinguishing cell space partition zone;
Discern behind the described terminal to report base station and comprise: the base station is discerned according to the reporting message of terminal, and the reporting message of described terminal comprises: terminal is from the relative distance of base station, the path loss of terminal to base station or the absolute position of terminal.
In a kind of embodiment of said method, described subregion exploration comprises:
According to network exploration, it is alternative that the adjacent area that the adjacent area pilot signal strength of a certain sub-district space partition zone is not less than a default thresholding of pilot signal strength of described sub-district is set to the adjacent area of this sub-district space partition zone;
In the adjacent area was alternative, the N that pilot signal strength is a strongest adjacent area was defined as the adjacent area of this sub-district space partition zone, and wherein N is a natural number.
In a kind of embodiment of said method, the control of described adjacent area comprises: the base station issues the broadcast that comprises corresponding neighboring BS relationship to each sub-district space partition zone; The base station issues the nearby region measurement control messages of corresponding neighboring BS relationship according to the sub-district space partition zone under the terminal in the sub-district to terminal.
The present invention also provides a kind of adjacent area processing unit of sub-district, comprising:
Subregion determination module: in the sub-district, determine sub-district space partition zone with different neighboring BS relationship;
Adjacent area control module: carry out adjacent area control according to described sub-district space partition zone.
In a kind of embodiment of said apparatus, described subregion determination module comprises:
Subregion division unit: according to the identification of base stations ability initial sub-district space partition zone is carried out in the sub-district and divide;
Subregion exploration unit: each initial sub-district space partition zone is carried out the network exploration, determine the neighboring BS relationship of the sub-district space partition zone that each is initial;
Subregion is simplified the unit: the initial sub-district space partition zone that will have identical neighboring BS relationship merges, and finally determines the sub-district space partition zone with different neighboring BS relationship.
The present invention is by determining the sub-district space partition zone with different neighboring BS relationship in the sub-district, and carry out the relevant control of adjacent area based on the sub-district space partition zone of determining, thereby can simplify the neighboring BS relationship of sub-district, alleviate the burden that terminal is carried out nearby region measurement and control.
Description of drawings
Fig. 1 is a kind of mobile communication cell network diagram of typical clover form;
Fig. 2 is the sub-district space partition zone schematic diagram of the embodiment of the invention;
Fig. 3 is the neighboring BS relationship segmentation and the optimization flow chart based on CSS of the embodiment of the invention.
Embodiment
The contrast accompanying drawing elaborates to the specific embodiment of the present invention below.
Referring to Fig. 1, the zones of different of terminal in the sub-district, the influence that is subjected to each adjacent area is different, when terminal is in inside, sub-district, its influence that is subjected to the adjacent area is very little, and when terminal was in cell edge, it mainly was subjected to the influence of adjacent adjacent area, edge therewith, and non-conterminous adjacent area, edge is relatively little to this terminal influence therewith, even little of ignoring.If to zones of different definition neighboring BS relationship in the sub-district, their neighboring BS relationship will be different so.
For this reason, the definition that this paper proposes a kind of " sub-district space partition zone " is used for identification and defines terminal residing zone in the sub-district, and the neighboring BS relationship of sub-district is segmented and optimizes based on the sub-district space partition zone.It comprises that mainly subregion is determined and two processes of adjacent area control, wherein,
Subregion is determined to comprise: choose the sub-district that needs are optimized neighboring BS relationship; The initial cell space partition zone of division of cells; Each initial cell space partition zone in the sub-district is determined its neighboring BS relationship respectively; Sub-district space partition zone with identical neighboring BS relationship is merged the final sub-district space partition zone that obtains simplification; The sub-district space partition zone of simplifying has different neighboring BS relationship.
Adjacent area control: can issue respectively each sub-district space partition zone after simplifying and to comprise the broadcast of neighboring BS relationship separately; Can issue the nearby region measurement control messages of corresponding neighboring BS relationship according to its sub-district of living in space partition zone to the terminal in the communication connection status.
By above-mentioned adjacent area segmentation and optimization, can effectively reduce the load that terminal is measured and handled in real time the adjacent area to the sub-district.
The definition of sub-district space partition zone is: an area of space in the sub-district can be continuous, also can be discontinuous, but it be can with other zones of sub-district, in other words conj.or perhaps with the sub-district in other space partition zones are differentiable zones.Herein, represent with Cell Space Subarea (being abbreviated as CSS).
The differentiation of CSS is that the place, base station under the sub-district carries out, it can be discerned by base station itself, for example the azimuth (AOA, Angle of Arrival) of discerning different CSS by smart antenna, base station is distinguished, and perhaps discerns different CSS by spaced antenna and covers the antenna that is belonged to and distinguish; Also can discern for the base station afterwards by the terminal to report related news in the CSS, for example, terminal to report self is from the relative distance of base station, thereby the base station judges that the CSS at terminal place is in sub-district inner ring or outer ring, near point or far point, also can reporting terminal to the path loss of base station, thereby the base station judges that the CSS at terminal place is in sub-district high field or feeble field, even absolute position that can reporting terminal, the position of GPS for example, thus the base station can be come CSS is discerned and distinguishes according to the GPS position of CSS.In the present invention, the technology of discerning and distinguish CSS is not limited.
As shown in Figure 2, the a1 in the A of sub-district, a2, a3, a4 are exactly the CSS of sub-district A.These CSS, some spaced antenna coverage hole that is the base station by the formula of zooming out forms, for example a1 and a2, also some is that the base station is estimated to distinguish to form by the azimuth of smart antenna, for example a3 and a4.CSS among Fig. 2 only is an example, and the CSS in the real network can be not limited in the situation shown in the figure.
In Fig. 2, the adjacent area of first lap has comprised B, C, D, E, F, G totally 6 sub-districts around the A of sub-district, but for each CSS in the A of sub-district, but each is variant with the neighbouring relations of these adjacent areas, for example a1 is in the inside of sub-district A, it not with B～G in any one sub-district adjacent, and adjacent with other CSS of sub-district; A3 belongs to the sub-district A zone of direction on the lower side, and it is main adjacent with sub-district G, perhaps also may with some neighbouring relations of sub-district B, F.For this reason, can carry out network exploration on the spot, segment their neighboring BS relationship, and the CSS with identical neighboring BS relationship is merged simplification each CSS in the sub-district.
As shown in Figure 3, the realization flow that handle the adjacent area of sub-district comprises that subregion is determined and two processes of adjacent area control, and wherein the subregion deterministic process comprises:
1, choose the sub-district that needs to optimize neighboring BS relationship, for example the adjacent area outnumbers 10 sub-district in the dense city network environment.
2,, initial CSS is divided in selected sub-district according to the recognition capability of base station to CSS.
3, be provided with down at initial sub-district neighboring BS relationship, utilize terminal drive test instrument, carry out actual network exploration, determine the neighboring BS relationship of each CSS at each initial CSS.The neighboring BS relationship of each CSS is determined can be with reference to following two conditions:
In the adjacent area of sub-district, has only the pilot signal strength P of adjacent area
NBe not less than this district pilots signal strength signal intensity P
S[this district pilots signal strength signal intensity herein is meant that this CSS measures the pilot signal strength of this sub-district (antenna for base station issues) of (receiving), at different CSS (diverse location), the signal strength signal intensity that receives is different, generally need carry out in-site measurement again] thresholding T (on the occasion of, 15dB for example) adjacent area, shown in (1), the adjacent area that just can classify this CSS as is alternative;
P
S-P
N≤T (1)
In the adjacent area is alternative, have only the strongest top n adjacent area of pilot signal strength just can be listed in the adjacent area of this CSS, N is a natural number, can look actual conditions and determine, for example N=5.
4, the CSS with identical neighboring BS relationship is merged.
5, obtain the CSS of simplification.
If network carried out planning again and optimizing, need the neighboring BS relationship of the CSS of above-mentioned acquisition be surveyed again and adjust.
After obtaining the CSS that simplifies, because each CSS can be discerned in the base station, also can know the CSS at terminal place in the communication, so, following adjacent area control just can be carried out in the base station:
Each CSS is issued the broadcast that comprises corresponding neighboring BS relationship;
To being in the terminal in the communication connection status in the sub-district,, issue the nearby region measurement control messages of corresponding neighboring BS relationship according to CSS under it.
The division of CSS and based on the simplification of neighboring BS relationship, issue, issue based on the nearby region measurement control messages of CSS under the terminal based on the broadcast of CSS can be controlled by the base station, flexibly so that the load disposal ability of flexible adaptation base station and terminal.
In the actual mobile communications network, particularly in the dense city environment, the adjacent area number of sub-district is very many, and this nearby region measurement and disposal ability to terminal proposes very high requirement.And the present invention simplifies neighboring BS relationship by the design of CSS, can significantly reduce the nearby region measurement of terminal and the demand of disposal ability.And find by authority's survey data, in fact the data field business of the circuit domain business of half and the overwhelming majority all is to take place under static or scene that mobility is very low in the mobile communications network, promptly can not change communicating in all basic certain CSS in the sub-district of professional most terminals, this is objectively for implementing the invention provides good application foundation.
The CSS that this paper proposes, with cell splitting or Hierarchical Network be different.CSS remains the part of sub-district, and it is many that the number of cells of whole network can't become.Each CSS in the sub-district also need not to carry out priority and divides as Hierarchical Network.CSS is handled by inside of base station, need not terminal and knows and support CSS, so just can additionally not increase the requirement to terminal capability.In addition, based on CSS, also be easy to realize the space division multiplexing of resources such as frequency spectrum, improve the utilance of resources such as limited frequency spectrum, the technology such as cell splitting, Hierarchical Network that reach equally increase capacity, remedy the purpose of covering, but do not have the defective that their complexities roll up.
Along with the MIMO application of technology in mobile communication such as (Multi Input Multi Output advance to have more more) more and more widely, the segmentation of spatial domain resource, development and utilization will become more and more widely.Accordingly, the definition of the CSS that this paper proposes also will obtain more and more general application.The present invention is applicable to any mobile communication system.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, but this example of just lifting for ease of understanding should not think that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can make various possible being equal to and change or replacement, these changes or replacement all should belong to protection scope of the present invention.
Claims (10)
1. the adjacent area processing method of a sub-district is characterized in that, comprising:
Subregion is determined: determine the sub-district space partition zone with different neighboring BS relationship in the sub-district;
Adjacent area control: carry out adjacent area control according to described sub-district space partition zone.
2. the method for claim 1 is characterized in that, described subregion is determined to comprise:
Subregion is divided: according to the identification of base stations ability initial sub-district space partition zone is carried out in the sub-district and divide;
Subregion exploration: each initial sub-district space partition zone is carried out the network exploration, determine the neighboring BS relationship of the sub-district space partition zone that each is initial;
Subregion is simplified: the initial sub-district space partition zone that will have identical neighboring BS relationship merges, and finally determines the sub-district space partition zone with different neighboring BS relationship.
3. method as claimed in claim 2 is characterized in that, described subregion is divided and comprised: discern behind base station self identification or the terminal to report base station, wherein,
Base station self identification comprises: the distinguishing cell space partition zone is come by the azimuth of smart antenna identification different districts space partition zone in the base station, and perhaps the antenna that covering belonged to by spaced antenna identification different districts space partition zone comes the distinguishing cell space partition zone;
Discern behind the described terminal to report base station and comprise: the base station is discerned according to the reporting message of terminal, and the reporting message of described terminal comprises: terminal is from the relative distance of base station, the path loss of terminal to base station or the absolute position of terminal.
4. method as claimed in claim 2 is characterized in that, described subregion exploration comprises:
According to network exploration, it is alternative that the adjacent area that the adjacent area pilot signal strength of a certain sub-district space partition zone is not less than a default thresholding of pilot signal strength of described sub-district is set to the adjacent area of this sub-district space partition zone;
In the adjacent area was alternative, the N that pilot signal strength is a strongest adjacent area was defined as the adjacent area of this sub-district space partition zone, and wherein N is a natural number.
5. as each described method in the claim 1 to 4, it is characterized in that the control of described adjacent area comprises: the base station issues the broadcast that comprises corresponding neighboring BS relationship to each sub-district space partition zone; The base station issues the nearby region measurement control messages of corresponding neighboring BS relationship according to the sub-district space partition zone under the terminal in the sub-district to terminal.
6. the adjacent area processing unit of a sub-district is characterized in that, comprising:
Subregion determination module: in the sub-district, determine sub-district space partition zone with different neighboring BS relationship;
Adjacent area control module: carry out adjacent area control according to described sub-district space partition zone.
7. device as claimed in claim 6 is characterized in that, described subregion determination module comprises:
Subregion division unit: according to the identification of base stations ability initial sub-district space partition zone is carried out in the sub-district and divide;
Subregion exploration unit: each initial sub-district space partition zone is carried out the network exploration, determine the neighboring BS relationship of the sub-district space partition zone that each is initial;
Subregion is simplified the unit: the initial sub-district space partition zone that will have identical neighboring BS relationship merges, and finally determines the sub-district space partition zone with different neighboring BS relationship.
8. device as claimed in claim 7 is characterized in that, the identification of base stations ability of described subregion division unit comprises: discern behind base station self identification or the terminal to report base station, wherein,
Base station self identification comprises: the distinguishing cell space partition zone is come by the azimuth of smart antenna identification different districts space partition zone in the base station, and perhaps the antenna that covering belonged to by spaced antenna identification different districts space partition zone comes the distinguishing cell space partition zone;
Discern behind the described terminal to report base station and comprise: the base station is discerned according to the reporting message of terminal, and the reporting message of described terminal comprises: terminal is from the relative distance of base station, the path loss of terminal to base station or the absolute position of terminal.
9. device as claimed in claim 7 is characterized in that, described subregion exploration unit is to carry out the subregion exploration as follows:
According to network exploration, it is alternative that the adjacent area that the adjacent area pilot signal strength of a certain sub-district space partition zone is not less than a default thresholding of pilot signal strength of described sub-district is set to the adjacent area of this sub-district space partition zone;
In the adjacent area was alternative, the N that pilot signal strength is a strongest adjacent area was defined as the adjacent area of this sub-district space partition zone, and wherein N is a natural number.
10. as each described device in the claim 6 to 9, it is characterized in that the adjacent area control of described adjacent area control unit comprises: the base station issues the broadcast that comprises corresponding neighboring BS relationship to each sub-district space partition zone; The base station issues the nearby region measurement control messages of corresponding neighboring BS relationship according to the sub-district space partition zone under the terminal in the sub-district to terminal.
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| CN 200910109846 CN102075957B (en) | 2009-11-24 | 2009-11-24 | Neighbor cell processing method and device for cell |
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| CN107018517A (en) * | 2016-01-27 | 2017-08-04 | 中兴通讯股份有限公司 | A kind of method, device and base station that measurement frequency point is simplified for mobile terminal |
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