CN103458414A - Cell clustering method - Google Patents
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- CN103458414A CN103458414A CN2013103538172A CN201310353817A CN103458414A CN 103458414 A CN103458414 A CN 103458414A CN 2013103538172 A CN2013103538172 A CN 2013103538172A CN 201310353817 A CN201310353817 A CN 201310353817A CN 103458414 A CN103458414 A CN 103458414A
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Abstract
The invention provides a cell clustering method. The cell clustering method is characterized by comprising the step of calculating isolation between every two adjacent cells in a wireless communication network cell aggregation; the step of setting the isolation threshold value theta and judging whether a boundary exists between the two cells; the step of dividing the cell aggregation in which the boundaries exist between every two adjacent cells into sub-clusters Si in the wireless communication network cell aggregation U, wherein i=1, 2,...,m and the sub-clusters Si meet the formula: U=S1 UpsilonS2 Upsilon...Upsilon Sm; the step of calculating the connectivity among the sub-clusters; the step of setting a connectivity threshold value N and judging whether the sub-clusters need to be combined or not according to the connectivity threshold value N; when the connectivity degree between every two adjacent sub-clusters is larger than the connectivity threshold value N, the two sub-clusters are combined. The limitation tolerance for an interference link is ruled according to the connectivity threshold value among the sub-clusters, and on the premise that the interference among cell base stations is effectively avoided, the requirement for improving the self-adaptability of the cell network service can be improved.
Description
Technical field
The present invention relates to cordless communication network, relate in particular to a kind of community cluster-dividing method.
Background technology
At cordless communication network, particularly in time division duplex (TDD) network, because different uplink and downlink sub-frame configuration may be used in different communities, cause community adjacent on specific subframe in different uplink and downlink transmission states, therefore can produce between base station in network and the phase mutual interference between user terminal.The interference of this uplink and downlink can seriously affect the lifting of the network performance brought by service adaptation, and because the transmitting power of cell base station can significantly be greater than the transmitting power of user terminal, so the phase mutual interference between cell base station is at first to need the problem solved in TDD sub-frame configuration adaptive network.
In order effectively to suppress this uplink and downlink, disturb, the particularly phase mutual interference between cell base station is implemented the specific suppression strategy that disturbs and is very important in network.At present, introduced a kind of community sub-clustering disturbance restraining method (Cell Clustering Interference Mitigation) in Long Term Evolution (LTE) relevant criterion, the community that at first the method is less than isolation in network certain threshold value is divided in one bunch fully, then make in same cluster Nei community and all use same uplink and downlink sub-frame configuration, disturb thereby eliminated the uplink and downlink that are positioned at same cluster minizone fully.
Although but this method can effectively avoid the uplink and downlink of minizone in same cluster to disturb, and has reduced to a certain extent the service adaptation of network.Due to the Qi Dui community divided bunch larger, with the Zone situation in cluster, be not quite similar, but must adopt same uplink and downlink sub-frame configuration, cause in the process of sub-frame configuration and can't select best sub-frame configuration type according to the practical business situation of each community, can't realize meeting the performance index requirements of the service adaptation that improves community under the prerequisite of as far as possible avoiding disturbing between cell base station.
Summary of the invention
(1) technical problem that will solve
The invention provides a kind of community cluster-dividing method, can on the basis of as far as possible avoiding base station to disturb, improve the Network adaptivity of community, understand the problem of the service adaptation of decrease network to solve prior art small area cluster-dividing method.
(2) technical scheme
For solving above technical problem, the invention provides a kind of community cluster-dividing method, comprising:
Calculate the isolation between the Mei Liangge community in the radio communication network cell set;
Set isolation threshold value θ, when the isolation between the Dang Liangge community is less than described isolation threshold value θ, there is limit in judgement between the Zhe Liangge community; When between the Dang Liangge community, isolation is more than or equal to described isolation threshold value θ, judges between the Zhe Liangge community and do not have limit;
The set of cells that all has limit between the Mei Liangge community is divided into to the submanifold S in radio communication network cell set U
i, i=1,2 ..., m, make submanifold S
ibetween meet U=S
1∪ S
2∪ ... ∪ S
m;
Calculate the degree of communication between each submanifold: all do not have limit in any one community in a submanifold and another submanifold between any community, be not communicated with between two submanifolds, degree of communication is 0, n in a submanifold
1n in individual community and another submanifold
2there is limit between individual community, n
1, n
2while when different, being zero, degree of communication is max{n
1, n
2;
Set degree of communication threshold value N, according to degree of communication threshold value N, judge between each submanifold whether need to merge: when existing degree of communication between any two submanifolds to be greater than degree of communication threshold value N, these two submanifolds are merged.
Further,
Described cordless communication network comprises: Long Term Evolution-time division duplex network.
Described radio communication network cell set comprises the macrocell of any amount, and/or, the picocell of any amount.
Further, in the set of described calculating radio communication network cell, the method for the isolation between the Mei Liangge community comprises:
Isolation=large scale decline+antenna gain+B
Wherein: large scale decline and antenna gain obtain according to the reference signal of base station, and the large scale decline shows the way and damages and shadow fading; Antenna gain refers to the receive loss of antenna; B is constant.
Further, the value of described constant B is:
When two cell base stations all are femto base station, B=0;
While having a cell base station to be macro base station in the Dang Liangge community, the span of B is :-20dB～-30dB.
Further, the span of described isolation threshold value θ is: 80dB～90dB.
Further, described the set of cells that all has limit between the Mei Liangge community is divided into to the submanifold S in radio communication network cell set U
i, i=1,2 ..., m comprises: select the submanifold S that makes the m value minimum
idivision methods is divided the radio communication network cell set.
Further, the system of selection of described degree of communication threshold value N is:
When requiring, sub-frame configuration self-adaptation flexible degree is high, and when between submanifold, interfering link is many, the N value is large, is 3 or 4;
When requiring, sub-frame configuration adaptivity flexibility ratio is low, and when between submanifold, interfering link is few, the N value is little, is 0,1 or 2.
Further, describedly when existing degree of communication between any two submanifolds to be greater than degree of communication threshold value N, these two submanifolds are merged, are also comprised:
Step S1: calculate the degree of communication between each submanifold after merging;
Step S2: when still existing degree of communication between any two submanifolds to be greater than degree of communication threshold value N, continue these two submanifolds are merged, and get back to step S1; Otherwise step finishes.
Further, described submanifold is merged and comprises: preferentially two submanifolds of degree of communication maximum between submanifold are merged.
Further, the method also comprises:
In cordless communication network after sub-clustering same submanifold Nei community according to bunch in the uplink and downlink service conditions select best sub-frame configuration type;
For still there being the community of inter base station interference in different submanifolds, in the subframe that the uplink and downlink conflict occurs, in one bunch, the uplink community adopts normal transmission, and in another bunch, the community of downlink transfer adopts almost blank subframe.
(3) beneficial effect
Visible, in a kind of community cluster-dividing method proposed in the present invention, not that all communities that can produce the uplink and downlink interference in cordless communication network all are divided in one bunch, thereby avoid the uplink and downlink in same cluster to disturb fully; But will disturb each other after maximum community is divided in one bunch as far as possible, stipulate the tolerance limit for interfering link between submanifold according to the degree of communication threshold value between submanifold, make the self-adaptation flexible Du Genggao of sub-frame configuration, can under the prerequisite of effectively avoiding disturbing between cell base station, meet the requirement that improves the subzone network service adaptation, the needs in more realistic application.
In addition, utilize the value concept of isolation in the cluster-dividing method of Zhong of the present invention community, effectively distinguished the difference of the interior macrocell of network and picocell, can carry out effective sub-clustering and merging to dissimilar community more accurately; And, by controlling the span of degree of communication threshold value, can realize making balance according to actual needs among aspect interfering link how many two between sub-frame configuration adaptivity height and subframe; And repeatedly calculate the step that degree of communication between submanifold and submanifold merge in cluster-dividing method, and after sub-clustering for the processing method of different districts uplink and downlink service conditions, can avoid the existence of interfering link between community as far as possible.
The accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the basic procedure schematic diagram of embodiment of the present invention small area cluster-dividing method;
Fig. 2 is the schematic flow sheet of a preferred embodiment of the invention small area cluster-dividing method;
Fig. 3 is the execution schematic diagram of a preferred embodiment of the invention small area cluster algorithm;
Fig. 4 is the schematic diagram of strong connected set concept in the embodiment of the present invention;
Fig. 5 is the mode schematic diagram that in the embodiment of the present invention, in the submanifold partition process, different submanifolds are divided;
Fig. 6 is the schematic diagram of degree of communication concept in the embodiment of the present invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making under the creative work prerequisite the every other embodiment obtained, belong to the scope of protection of the invention.
The embodiment of the present invention proposes a kind of community cluster-dividing method, as shown in Figure 1, comprising:
Step 101: calculate the isolation between the Mei Liangge community in the radio communication network cell set;
Step 102: set isolation threshold value θ, when the isolation between the Dang Liangge community is less than described isolation threshold value θ, there is limit in judgement between the Zhe Liangge community; When between the Dang Liangge community, isolation is more than or equal to described isolation threshold value θ, judges between the Zhe Liangge community and do not have limit;
Step 103: the set of cells that all has limit between the Mei Liangge community is divided into to the submanifold S in radio communication network cell set U
i, i=1,2 ..., m, make submanifold S
ibetween meet U=S
1∪ S
2∪ ... ∪ S
m;
Step 104: calculate the degree of communication between each submanifold: all do not have limit in any one community in a submanifold and another submanifold between any community, be not communicated with between two submanifolds, degree of communication is 0, n in a submanifold
1n in individual community and another submanifold
2there is limit between individual community, n
1, n
2while when different, being zero, degree of communication is max{n
1, n
2;
Step 105: set degree of communication threshold value N, according to degree of communication threshold value N, judge between each submanifold whether need to merge: when existing degree of communication between any two submanifolds to be greater than degree of communication threshold value N, these two submanifolds are merged.
Visible, in the community cluster-dividing method proposed in the embodiment of the present invention, not that all communities that can produce the uplink and downlink interference in cordless communication network all are divided in one bunch, thereby avoid the uplink and downlink in same cluster to disturb fully; But will disturb each other after maximum community is divided in one bunch as far as possible, stipulate the tolerance limit for interfering link between submanifold according to the degree of communication threshold value between submanifold, make the self-adaptation flexible Du Genggao of sub-frame configuration, can under the prerequisite of effectively avoiding disturbing between cell base station, meet the requirement that improves the subzone network service adaptation, the needs in more realistic application.
In the community cluster-dividing method adopted in the embodiment of the present invention, mainly applicable is one time-division of Long Term Evolution duplex (LTE-TDD) network, in practice, the embodiment of the present invention can be applied to macrocell (Macrocell) and picocell (Picocell) formation of any amount.
In one embodiment of the invention, in order more accurately to calculate the isolation between the Mei Liangge community in the radio communication network cell set, a kind of preferably mode is to adopt following methods:
Isolation=large scale decline+antenna gain+B
Wherein, the large scale decline shows the way and damages and shadow fading, normally tens to 100 dB; Antenna gain refers to antenna mode gain, i.e. the receive loss of antenna, between 0～25dB; Large scale decline and antenna gain all can obtain according to the reference signal of base station.
In one embodiment of the invention, for the computing formula of isolation, the span of constant B and the type of community have relation: when two cell base stations are all femto base station (PeNB), and B=0; While having a cell base station to be macro base station (MeNB) in the Dang Liangge community, because the gap of transmitting power between MeNB and PeNB is 26dB or 29dB, so be taken as-20dB of the span of B～-30dB between.
In practice, span that need to determine isolation threshold value θ is come better carrying out sub-clustering between community, and in another embodiment of the present invention, the span of isolation threshold value θ is: 80dB～90dB.
In one embodiment of the invention, the set of cells that all has limit between the Mei Liangge community is divided into to the submanifold S in radio communication network cell set U
i(i=1,2 ..., division methods m) may have multiple, all can make submanifold S
ibetween meet U=S
1∪ S
2∪ ... ∪ S
m, in order to avoid the interference of uplink and downlink business between base station in network as far as possible, preferably, can select the submanifold S that makes the m value minimum
idivision methods is divided the radio communication network cell set.
In practice, can utilize as required the span of degree of communication threshold value N to be selected neatly, in one embodiment of the invention, system of selection can be:
When requiring, sub-frame configuration self-adaptation flexible degree is high, and when between submanifold, interfering link is many, the N value is large, is 3 or 4;
When requiring, sub-frame configuration adaptivity flexibility ratio is low, and when between submanifold, interfering link is few, the N value is little, is 0,1 or 2.
In another embodiment of the present invention, in order to meet better the requirement that improves the subzone network service adaptation under the prerequisite of effectively avoiding disturbing between cell base station, can adopt following method further to process for the submanifold after merging:
Step S1: calculate the degree of communication between each submanifold after merging;
Step S2: when still existing degree of communication between any two submanifolds to be greater than degree of communication threshold value N, continue these two submanifolds are merged, and get back to step S1; Otherwise step finishes.
In practice, preferably, the method merged for the submanifold in cordless communication network is: preferentially two submanifolds of degree of communication maximum between submanifold are merged.
The complete set of cells for sub-clustering in cordless communication network, in order to avoid better the interference of community uplink and downlink business, in another embodiment of the present invention, can adopt following method:
In cordless communication network after sub-clustering same submanifold Nei community according to bunch in the uplink and downlink service conditions select best sub-frame configuration type;
For still there being the community of inter base station interference in different submanifolds, in the subframe that the uplink and downlink conflict occurs, in one bunch, the uplink community adopts normal transmission, in another bunch, the community of downlink transfer adopts almost blank subframe (Almost Blank Subframes, ABS).
The LTE-TDD network that a You13Ge community is formed of below take carries out the community sub-clustering as example, describes the actual implementation procedure of one embodiment of the invention in detail.
Fig. 2 is the flow chart of a preferred embodiment of the invention small area cluster-dividing method.Referring to Fig. 2, in a preferred embodiment of the invention, the LTE-TDD network that the You13Ge community shown in Fig. 3 is formed is as object, and the process of for this network cell set, carrying out sub-clustering comprises:
Step 201: according to formula: isolation=large scale decline+antenna gain+B, the isolation in computing network between the Mei Liangge community.
In formula, the large scale decline shows the way and damages and shadow fading, normally tens to 100 dB; Antenna gain refers to antenna mode gain, i.e. the receive loss of antenna, between 0～25dB; Large scale decline and antenna gain all can obtain according to the reference signal of base station.
And, for constant B, the type of span and community has relation: when two cell base stations are all femto base station (PeNB), B=0; While having a cell base station to be macro base station (MeNB) in the Dang Liangge community, because the gap of transmitting power between MeNB and PeNB is 26dB or 29dB, so be taken as-20dB of the span of B～-30dB between.
Therefore in this step, at first need shown in Fig. 3 in diffServ network (a) to comprise respectively in the 13Ge community how many macrocells, a how many picocell, then according to different cell classification substitutions, different constant B calculates the isolation between the Mei Liangge community.
Step 202: set isolation threshold value θ, judge between the Mei Liangge community and whether have limit.
In this step, set isolation threshold value θ and be: 80dB, then and the isolation between the Mei Liangge community calculated in step 201 contrasted:
When the isolation between the Dang Liangge community is less than 80dB, there is limit in judgement between the Zhe Liangge community; When between the Dang Liangge community, isolation is more than or equal to 80dB, judges between the Zhe Liangge community and do not have limit.
In embodiments of the present invention, for judged result that between the Zhe13Ge community, whether limit exists, as shown in Fig. 3 (b), each point represents the Yi Ge community, between community, exists line to mean to have limit between the Ci Liangge community.
Step 203: will all exist the set of cells on limit to be defined as strong connected set between the Mei Liangge community, define these strong connected sets submanifold of LTE-TDD network cell set for this reason.This network cell is divided into to 5 submanifolds, as shown in Fig. 3 (c).
The concept of strong connected set can be as shown in Figure 4, if between the Mei Liangge community in network cell set, limit is arranged, claims that this set is strong connected set; Otherwise with regard to the strong connected set of right and wrong.
In the process of dividing at submanifold, the submanifold S in radio communication network cell set U
i(i=1,2 ..., division methods m) may have multiple, all can make submanifold S
ibetween meet U=S
1∪ S
2∪ ... ∪ S
m, in order to avoid the interference of uplink and downlink business between base station in network as far as possible, preferably, can select the submanifold S that makes the m value minimum
idivision methods is divided the radio communication network cell set, schematic diagram as shown in Figure 5, the different submanifolds that may occur in the submanifold partition process are divided combination, five nodes in Fig. 5 both can be divided into three strong connected sets according to left drawing method, also can be divided into two strong connected sets according to right drawing method, the community cluster-dividing method proposed in the embodiment of the present invention adopts the submanifold division methods of submanifold minimum number, thereby selects the division methods of right figure in this figure.
In this step, 13Ge in network is followed community to above-mentioned rule, can be divided into 5 submanifolds, division result is shown in Fig. 3 (c).
Step 204: calculate 5 degrees of communication between submanifold.
In the concept of embodiment of the present invention degree of communication, be defined as: all do not have limit in any one community in a submanifold and another submanifold between any community, be not communicated with between two submanifolds, degree of communication is 0, n in a submanifold
1n in individual community and another submanifold
2there is limit between individual community, n
1, n
2while when different, being zero, degree of communication is max{n
1, n
2, Fig. 6 is shown in by schematic diagram: in Fig. 6, and two S set
1with S
2be communicated with S
1middle Yi Ge community and S
2there is limit in middle Liang Ge between community, so S
1with S
2between degree of communication be 2.
So in this step, the degree of communication result of calculation between 5 submanifolds can be as shown in Fig. 3 (d).
Step 205: determine that degree of communication threshold value N is 1, according to degree of communication threshold value 1, judge between 5 submanifolds whether need to merge.
In this step, chosen and made sub-frame configuration adaptivity flexibility ratio lower, and the value of the less degree of communication threshold value of interfering link between submanifold, according to the degree of communication between 5 submanifolds that calculate, can judge between which submanifold and need to merge according to the degree of communication threshold value N=1 set, which does not need merges.
As shown in dotted line in Fig. 3 (d), the submanifold that between all, degree of communication is 2 all needs to merge into one, between the submanifold that degree of communication is 1, do not need to merge, need preferentially to merge the submanifold of degree of communication maximum in merging process, and in figure, two pairs of submanifold degrees of communication that need to merge are 2, so these two pairs of submanifolds can merge simultaneously, amalgamation result is 3 submanifolds, as shown in Fig. 3 (e).
Step 206: after the submanifold in completing steps 205 merges, recalculating to merge the degree of communication between rear submanifold and judge whether needs further to merge, as shown in Fig. 3 (f).
In this result of calculation of taking turns, the degree of communication between 3 submanifolds is respectively 0,1,2,, according to the degree of communication threshold value N=1 set, between two submanifolds that degree of communication is 2, still needs to be merged, and merges into 2 submanifolds, and result is as Fig. 3 (g).
Step 207: repeat the above-mentioned calculating of submanifold degree of communication and submanifold and merge determining step, the degree of communication between 2 submanifolds now is 1, equals the degree of communication threshold value, and without being merged, step finishes again.
So far, completed the process of a preferred embodiment of the invention small area sub-clustering.
In addition, it should be noted that, it is a kind of preferred implementation procedure of embodiment of the present invention community cluster-dividing method that above-mentioned all flow processs based on Fig. 2 are described, in the actual realization of community of the present invention cluster-dividing method, can carry out as required random variation on the basis of flow process shown in Fig. 1, can be to select the arbitrary steps in Fig. 2 to realize, the sequencing of each step also can be adjusted etc. as required.Such as, in a kind of actual realization, can not perform step the process after 206; For another example, in the actual realization of the another kind of the inventive method, when step 205 is determined degree of communication threshold value N, can be taken as required 2 or 3 equivalences.
Visible, the embodiment of the present invention has following beneficial effect:
In the community cluster-dividing method proposed in the embodiment of the present invention, not that all communities that can produce the uplink and downlink interference in cordless communication network all are divided in one bunch, thereby avoid the uplink and downlink in same cluster to disturb fully; But will disturb each other after maximum community is divided in one bunch as far as possible, stipulate the tolerance limit for interfering link between submanifold according to the degree of communication threshold value between submanifold, make the self-adaptation flexible Du Genggao of sub-frame configuration, can under the prerequisite of effectively avoiding disturbing between cell base station, meet the requirement that improves the subzone network service adaptation, the needs in more realistic application.
In addition, utilize the value concept of isolation in the cluster-dividing method of embodiment of the present invention Zhong community, effectively distinguished the difference of the interior macrocell of network and picocell, can carry out effective sub-clustering and merging to dissimilar community more accurately; And, by controlling the span of degree of communication threshold value, can realize making balance according to actual needs among aspect interfering link how many two between sub-frame configuration adaptivity height and subframe; And repeatedly calculate the step that degree of communication between submanifold and submanifold merge in cluster-dividing method, and after sub-clustering for the processing method of different districts uplink and downlink service conditions, can avoid the existence of interfering link between community as far as possible.
Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: its technical scheme that still can put down in writing aforementioned each embodiment is modified, or part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1.Yi Zhong the community cluster-dividing method, is characterized in that, comprising:
Calculate the isolation between the Mei Liangge community in the radio communication network cell set;
Set isolation threshold value θ, when the isolation between the Dang Liangge community is less than described isolation threshold value θ, there is limit in judgement between the Zhe Liangge community; When between the Dang Liangge community, isolation is more than or equal to described isolation threshold value θ, judges between the Zhe Liangge community and do not have limit;
The set of cells that all has limit between the Mei Liangge community is divided into to the submanifold S in radio communication network cell set U
i, i=1,2 ..., m, make submanifold S
ibetween meet U=S
1∪ S
2∪ ... ∪ S
m;
Calculate the degree of communication between each submanifold: all do not have limit in any one community in a submanifold and another submanifold between any community, be not communicated with between two submanifolds, degree of communication is 0, n in a submanifold
1n in individual community and another submanifold
2there is limit between individual community, n
1, n
2while when different, being zero, degree of communication is max{n
1, n
2;
Set degree of communication threshold value N, according to degree of communication threshold value N, judge between each submanifold whether need to merge: when existing degree of communication between any two submanifolds to be greater than degree of communication threshold value N, these two submanifolds are merged.
2. community according to claim 1 cluster-dividing method, is characterized in that,
Described cordless communication network comprises: Long Term Evolution-time division duplex network.
Described radio communication network cell set comprises the macrocell of any amount, and/or, the picocell of any amount.
3. community according to claim 1 cluster-dividing method, is characterized in that, the method for the isolation in the set of described calculating radio communication network cell between the Mei Liangge community comprises:
Isolation=large scale decline+antenna gain+B
Wherein: large scale decline and antenna gain obtain according to the reference signal of base station, and the large scale decline shows the way and damages and shadow fading; Antenna gain refers to the receive loss of antenna; B is constant.
4. according to the described community of any one in claims 1 to 3 cluster-dividing method, it is characterized in that, the value of described constant B is:
When two cell base stations all are femto base station, B=0;
While having a cell base station to be macro base station in the Dang Liangge community, the span of B is :-20dB～-30dB.
5. community according to claim 1 cluster-dividing method, is characterized in that, the span of described isolation threshold value θ is: 80dB～90dB.
6. community according to claim 1 cluster-dividing method, is characterized in that, described the set of cells that all has limit between the Mei Liangge community is divided into to the submanifold S in radio communication network cell set U
i, i=1,2 ..., m comprises: select the submanifold S that makes the m value minimum
idivision methods is divided the radio communication network cell set.
7. community according to claim 1 cluster-dividing method, is characterized in that, the system of selection of described degree of communication threshold value N is:
When requiring, sub-frame configuration self-adaptation flexible degree is high, and when between submanifold, interfering link is many, the N value is large, is 3 or 4;
When requiring, sub-frame configuration adaptivity flexibility ratio is low, and when between submanifold, interfering link is few, the N value is little, is 0,1 or 2.
8. community according to claim 1 cluster-dividing method, is characterized in that, describedly when existing degree of communication between any two submanifolds to be greater than degree of communication threshold value N, these two submanifolds merged, and also comprises:
Step S1: calculate the degree of communication between each submanifold after merging;
Step S2: when still existing degree of communication between any two submanifolds to be greater than degree of communication threshold value N, continue these two submanifolds are merged, and get back to step S1; Otherwise step finishes.
9. according to the described community of claim 1 or 8 cluster-dividing method, it is characterized in that, described submanifold is merged and comprises: preferentially two submanifolds of degree of communication maximum between submanifold are merged.
10. community according to claim 1 cluster-dividing method, is characterized in that, the method also comprises:
In cordless communication network after sub-clustering same submanifold Nei community according to bunch in the uplink and downlink service conditions select best sub-frame configuration type;
For still there being the community of inter base station interference in different submanifolds, in the subframe that the uplink and downlink conflict occurs, in one bunch, the uplink community adopts normal transmission, and in another bunch, the community of downlink transfer adopts almost blank subframe.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103763710A (en) * | 2014-01-24 | 2014-04-30 | 宇龙计算机通信科技(深圳)有限公司 | Grouping management method and system for TDD cross interference and base station |
| CN104158573A (en) * | 2014-07-01 | 2014-11-19 | 北京邮电大学 | Precoding method and precoding system for eliminating interference |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103763710A (en) * | 2014-01-24 | 2014-04-30 | 宇龙计算机通信科技(深圳)有限公司 | Grouping management method and system for TDD cross interference and base station |
| WO2015109650A1 (en) * | 2014-01-24 | 2015-07-30 | 东莞宇龙通信科技有限公司 | Grouping management method and grouping management system for tdd cross interference, and base station |
| CN103763710B (en) * | 2014-01-24 | 2017-06-06 | 宇龙计算机通信科技(深圳)有限公司 | The group management method and system for managing in groups of TDD cross jammings, base station |
| CN104158573A (en) * | 2014-07-01 | 2014-11-19 | 北京邮电大学 | Precoding method and precoding system for eliminating interference |
| CN104158573B (en) * | 2014-07-01 | 2018-04-13 | 北京邮电大学 | Eliminate the method for precoding and system of interference |
| CN108737009A (en) * | 2017-04-13 | 2018-11-02 | 电信科学技术研究院 | A kind of disturbance restraining method and device |
| CN108737009B (en) * | 2017-04-13 | 2020-02-11 | 电信科学技术研究院 | Interference suppression method and device |
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| CN103458414B (en) | 2016-04-20 |
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