CN103747458A - Method and system for correcting and optimizing mobile communication frequency - Google Patents
Method and system for correcting and optimizing mobile communication frequency Download PDFInfo
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- CN103747458A CN103747458A CN201410050632.9A CN201410050632A CN103747458A CN 103747458 A CN103747458 A CN 103747458A CN 201410050632 A CN201410050632 A CN 201410050632A CN 103747458 A CN103747458 A CN 103747458A
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Abstract
The invention discloses a method and a system for correcting and optimizing mobile communication frequency. The method comprises the following steps: step (11), calculating the total interference value of the whole network and using the total interference value as a target optimizing initial value; step (12), calculating the interference value of each cell; step (13), sorting the interference values of all the cells from large to small to obtain the interference value sorting orders of the cells; step (14), correcting the frequency of each cell according to the interference value sorting orders; step (15), calculating the total interference value of the whole network and using the total interference value as the target optimizing current value; if the target optimizing current value is smaller than the target optimizing initial value, updating the target optimizing initial value into the target optimizing current value and executing the step (12); otherwise, ending.
Description
Technical field
The present invention relates to mobile communication correlative technology field, particularly mobile communication frequency correction optimization method and system.
Background technology
Along with mobile communications network is constantly built and dilatation, the planning of frequency resource becomes the important step of mobile communication network planning.If during overall plan of network frequency planning obtain bad, can cause whole network to build up or dilatation after some performance index undesirable.As neighbor cell allocation identical frequency, when call in user Zhe community, may be subject to neighbor cell co-channel interference, cause call drop.How more effectively to utilize limited frequency resource, reach best frequency configuration effect, be the problem of mobile communication network planning personnel research always.
Summary of the invention
Based on this, be necessary to fail to effectively utilize limited frequency resource for prior art, reach best frequency configuration effect, a kind of mobile communication frequency correction optimization method and system are provided.
A kind of mobile communication frequency correction optimization method, comprising:
Step 15, calculates the total interference value of the whole network as optimization aim currency, if described optimization aim currency is less than described optimization aim initial value, optimization aim initial value is updated to optimization aim currency, execution step 12, otherwise finish.
Further, described step 14, specifically comprises:
Further, described step 22, specifically comprises:
Further, described interference value R
i=r
i is same× a+r
i neighbour, wherein R
irepresent the interference value of i community, r
i is samerepresent the co-channel interference value that i community is subject to, r
i neighbourrepresent the adjacent frequency interference value that i community is subject to, a is the weights ratio arranging.
Further, the total interference value of described the whole network is the summation of the interference value of all communities in the whole network.
A kind of mobile communication frequency correction optimization system, comprising:
Optimization aim initial value acquisition module, calculates the total interference value of the whole network as optimization aim initial value;
Area interference value acquisition module, calculates the interference value of each community;
Interference value order module, puts in order the interference value of the each community interference value that obtains each community that sorts from big to small;
Frequency correcting module, puts in order frequency correction is carried out in each community according to described interference value;
Optimization aim comparison module, calculate the total interference value of the whole network as optimization aim currency, if described optimization aim currency is less than described optimization aim initial value, optimization aim initial value is updated to optimization aim currency, carry out area interference value acquisition module, otherwise finish.
Further, described frequency correcting module, specifically comprises:
Current area initialization submodule, puts in order and gets first community as current area according to described interference value;
Current area judges submodule, judges whether to carry out frequency correction to current area, if cannot carry out frequency correction, carries out current area and obtains submodule, if can carry out frequency correction, carries out frequency and upgrades submodule;
Frequency upgrades submodule, upgrades the frequency of this community according to frequency correction result, carries out current area and obtains submodule;
Current area obtains submodule, if put in order and also have next community according to described interference value, according to described interference value, puts in order and gets next community as current area, carries out current area and judges submodule, otherwise carry out optimization aim comparison module.
Further, described current area judges submodule, specifically comprises:
Frequency disturbs and obtains submodule, and current area is added up the frequency point allocation situation of its adjacent area and obtained the disturbed condition of each frequency, and the ascending sequence of interference coefficient that frequency is subject to by frequency obtains frequency list;
Current frequency obtains submodule, if also have frequency in described frequency list, the frequency that takes out interference coefficient minimum from described frequency list is as current frequency, from described frequency list, delete current frequency, otherwise judgement can not be carried out frequency correction to current area, carry out current area and obtain submodule;
Current frequency judges that submodule judges whether current frequency strictly meets stringent condition, if do not met, carry out current frequency and obtain submodule, otherwise using current frequency as frequency correction result, judgement can be carried out frequency correction to current area, carries out frequency and upgrades submodule.
Further, described interference value R
i=r
i is same× a+r
i neighbour, wherein R
irepresent the interference value of i community, r
i is samerepresent the co-channel interference value that i community is subject to, r
i neighbourrepresent the adjacent frequency interference value that i community is subject to, a is the weights ratio arranging.
Further, the total interference value of described the whole network is the summation of the interference value of all communities in the whole network.
Conventionally shopping centre, crowded region interference value are the highest, and are the key areas of cordless communication network quality assurance, and the present invention is by community is arranged by interference value mode from big to small, and object is that frequency adjustment is preferentially carried out in interference value Gao community.Thereby realized the Mathematical Modeling that reduces the whole network area interference, by practice, examined the validity of this Mathematical Modeling; By didactic algorithm, through too much taking turns the optimization of the whole network subdistrict frequency point until the optimum frequency in the whole network community can be really found in convergence; By adding weights, can manually determine the effect of optimization with frequency or adjacent frequency interference, to accept or reject according to network interferences actual conditions.
Accompanying drawing explanation
Fig. 1 is the workflow diagram of a kind of mobile communication frequency correction of the present invention optimization method;
Fig. 2 is the specific works flow process figure of step 14 in a kind of mobile communication frequency correction of the present invention optimization method;
Fig. 3 is the specific works flow process figure of step 22 in a kind of mobile communication frequency correction of the present invention optimization method;
Fig. 4 is the cell frequency schematic diagram of mobile communications network website.
Figure 5 shows that the workflow diagram of an object lesson of step 13 of the present invention and step 14;
Fig. 6-1 is for adopting one of them weights of the present invention to make the total interference value decline of the whole network situation schematic diagram;
Fig. 6-2 are for adopting one of them weights of the present invention to make the total co-channel interference value of the whole network decline situation schematic diagram;
Fig. 6-3 are for adopting one of them weights of the present invention to make the total adjacent frequency interference value of the whole network decline situation schematic diagram;
Fig. 7 is the construction module figure of a kind of mobile communication frequency correction of the present invention optimization system.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
The workflow diagram that is illustrated in figure 1 a kind of mobile communication frequency correction of the present invention optimization method, comprising:
Step 15, calculates the total interference value of the whole network as optimization aim currency, if described optimization aim currency is less than described optimization aim initial value, optimization aim initial value is updated to optimization aim currency, execution step 12, otherwise finish.
In an embodiment, described step 14 as shown in Figure 2, specifically comprises therein:
In an embodiment, described step 22 as shown in Figure 3, specifically comprises therein:
Described stringent condition is: same community BCCH, TCH value of frequency point differ by more than or equal predetermined threshold value, and Tong Zhan community does not allow to exist same value of frequency point.For example predetermined threshold value is 3, and A website has A1, A2, A3 community, if A1 has value of frequency point, is 24, and A2, A3 do not allow to place 24 these value of frequency point again.If A1 community TCH frequency is [5,8,10], [5,8,10] at least want phase difference 3, and [5,8,11] allow.
Therein in an embodiment, described interference value R
i=r
i is same× a+r
i neighbour, wherein R
irepresent the interference value of i community, r
i is samerepresent the co-channel interference value that i community is subject to, r
i neighbourrepresent the adjacent frequency interference value that i community is subject to, a is the weights ratio arranging.
In an embodiment, the total interference value of described the whole network is the summation of the interference value of all communities in the whole network therein.
As shown in Figure 4, each community of mobile communications network website, all can arrange a group of frequencies (BCCH, TCH), the namely set of frequency of community, if do not arranged, it just cannot allow telex network.Respective description: 1, BCCH is Broadcast Control Channel (Broadcast Control Channel), only comprises a value.2, TCH is Traffic Channel (Traffic Channel), generally has 0 to 6 value.3, each value, is exactly frequency.4. different districts device type is different, and the interval at its dividing frequency place is different.GSM900 device type: BCCH:[30,54], TCH:[1,29] also [55,94].GSM1800 device type: BCCH:[512,522], [525,535] are [536,632] also.The frequency optimization correction of mobile communications network is exactly to replace the frequency that cell frequency group frequency is least interference, thereby realizes whole net area interference minimum.
The workflow diagram that is illustrated in figure 5 an object lesson of step 13 of the present invention and step 14, comprising:
Step S501, calculates the interference coefficient value of each community, and according to its size sequence, makes k=1;
Step S502, gets k community;
Step S503, judges whether to revise this cell frequency, if can, execution step S504, otherwise execution step S505;
Step S504, upgrades this subdistrict frequency point, and makes k=k+1, execution step S506;
Step S505, makes k=k+1, execution step S506;
Step S506, if k<=n performs step S502, otherwise finishes the number that wherein n is community.
In Fig. 5, while calculating same, the adjacent frequency interference value of each community, first find out same, the adjacent frequency interference coefficient of Dui Gai community, all adjacent areas.Add up again the logarithm of same, the adjacent frequency frequency of Yu Gai community, each adjacent area.The co-channel interference value of calculating Dui Gai community, some adjacent areas is to be multiplied by the co-channel interference coefficient of Dui Gai community, adjacent area with frequency logarithm frequently.The frequency logarithm that the adjacent frequency interference value that calculates Dui Gai community, some adjacent areas is adjacent frequency is multiplied by the adjacent frequency interference coefficient of Dui Gai community, adjacent area.
In Fig. 5, the interference value of each community be community with the weights of, adjacent frequency interference value and.Its weights are in the light of actual conditions set, and also can carry out optimizing.User can freely determine it is the weights that preferentially reduce the whole network co-channel interference or adjacent frequency interference.Operated by rotary motion is between 1-3.
In Fig. 5, when cell frequency is revised, add up the frequency point allocation situation of its adjacent area and the disturbed condition of each frequency.The descending sequence of interference coefficient that each frequency is subject to.Get successively again the frequency point allocation of the coefficient minimum that is interfered to community.When Gei community adds new frequency, judge whether this frequency strictly meets, and if do not met, this frequency is unavailable.
In Fig. 5, judge whether to revise, if effect is bad, do not revise, otherwise revise.Namely change the frequency that upgrades this community.
The heuristic frequency Correction Method of Fig. 5 is carried out to many wheels to the frequency of the whole network community and revise, each is taken turns according to flow chart and carries out, until convergence.
In Fig. 6, can see that we are respectively weights a is set at 1,2,3 o'clock, heuristic frequency Correction Method is to reducing the total effect of disturbing of the whole network.
1) by Fig. 6-1, we can see, heuristic frequency Correction Method can effectively reduce the whole network overall interference level, through 13, take turns and revise cell frequency configuration, and the total interference value of the whole network is on a declining curve, until no longer change to value.
2) by Fig. 6-1, Fig. 6-2, Fig. 6-3, we can see, during initial setting up, the total adjacent frequency interference value of the whole network is approximately the more than 4 times of the total co-channel interference value of the whole network.
3) when setting weights are 1, thereby heuristic frequency Correction Method mainly reduces the total interference value of the whole network by reducing the total adjacent frequency interference value of the whole network.By Fig. 6-2, can be seen, the total co-channel interference value of the whole network also goes up a little and rises than initial value.
4) when weights are made as 2, by Fig. 6-1, Fig. 6-2, Fig. 6-3, can be seen, the total interference value of the whole network, the total co-channel interference value of the whole network, the total adjacent frequency interference value of the whole network have all declined.The amplitude that the total adjacent frequency interference value of Amplitude Ratio the whole network that the total co-channel interference value of the whole network is fallen falls is large.
5) when weights are made as 3, by Fig. 6-1, Fig. 6-2, Fig. 6-3, can be seen, the total interference value of the whole network, the total co-channel interference value of the whole network and the total adjacent frequency interference value of the whole network have all declined.Compare weights and be made as at 2 o'clock, the amplitude that the total adjacent frequency interference value of Amplitude Ratio the whole network that the total co-channel interference value of the whole network is fallen falls is larger, but the amplitude that the total adjacent frequency interference value of the whole network declines is not so good as weights, is 2 o'clock.
From 3), 4), 5), the setting of weights makes effect of optimization difference, user can adopt according to actual conditions.The different weights ratios of user's definable, obtain different frequency optimization schemes.Weights, than the difference arranging, affect the total co-channel interference value of the whole network, the every amplitude of variation of revising optimization of taking turns of the total adjacent frequency interference value of the whole network.Under the situation declining in the total interference value trend of the whole network, likely occur that the total co-channel interference value of the whole network fall is greater than the total adjacent frequency interference value of the whole network amplitude, or contrary situation.User determines the weights that need according to actual environment.The whole network overall interference level (the total interference value of the whole network) is all area interference value R
isummation, the whole network co-channel interference (the total co-channel interference value of the whole network) is all community co-channel interference value R
isame summation, it is all community adjacent frequency interference value R that the whole network adjacent frequency is disturbed (the total adjacent frequency interference value of the whole network)
iadjacent summation.
The construction module figure that is illustrated in figure 7 a kind of mobile communication frequency correction of the present invention optimization system, comprising:
Optimization aim initial value acquisition module 701, calculates the total interference value of the whole network as optimization aim initial value;
Area interference value acquisition module 702, calculates the interference value of each community;
Interference value order module 703, puts in order the interference value of the each community interference value that obtains each community that sorts from big to small;
Frequency correcting module 704, puts in order frequency correction is carried out in each community according to described interference value;
Optimization aim comparison module 705, calculate the total interference value of the whole network as optimization aim currency, if described optimization aim currency is less than described optimization aim initial value, optimization aim initial value is updated to optimization aim currency, carry out area interference value acquisition module, otherwise finish.
In an embodiment, described frequency correcting module, specifically comprises therein:
Current area initialization submodule, puts in order and gets first community as current area according to described interference value;
Current area judges submodule, judges whether to carry out frequency correction to current area, if cannot carry out frequency correction, carries out current area and obtains submodule, if can carry out frequency correction, carries out frequency and upgrades submodule;
Frequency upgrades submodule, upgrades the frequency of this community according to frequency correction result, carries out current area and obtains submodule;
Current area obtains submodule, if put in order and also have next community according to described interference value, according to described interference value, puts in order and gets next community as current area, carries out current area and judges submodule, otherwise carry out optimization aim comparison module.
In an embodiment, described current area judges submodule, specifically comprises therein:
Frequency disturbs and obtains submodule, and current area is added up the frequency point allocation situation of its adjacent area and obtained the disturbed condition of each frequency, and the ascending sequence of interference coefficient that frequency is subject to by frequency obtains frequency list;
Current frequency obtains submodule, if also have frequency in described frequency list, the frequency that takes out interference coefficient minimum from described frequency list is as current frequency, from described frequency list, delete current frequency, otherwise judgement can not be carried out frequency correction to current area, carry out current area and obtain submodule;
Current frequency judges that submodule judges whether current frequency strictly meets stringent condition, if do not met, carry out current frequency and obtain submodule, otherwise using current frequency as frequency correction result, judgement can be carried out frequency correction to current area, carries out frequency and upgrades submodule.
Therein in an embodiment, described interference value R
i=r
i is same× a+r
i neighbour, wherein R
irepresent the interference value of i community, r
i is samerepresent the co-channel interference value that i community is subject to, r
i neighbourrepresent the adjacent frequency interference value that i community is subject to, a is the weights ratio arranging.
In an embodiment, the total interference value of described the whole network is the summation of the interference value of all communities in the whole network therein.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a mobile communication frequency correction optimization method, is characterized in that, comprising:
Step (11), calculates the total interference value of the whole network as optimization aim initial value;
Step (12), calculates the interference value of each community;
Step (13), puts in order the interference value of the each community interference value that obtains each community that sorts from big to small;
Step (14), puts in order frequency correction is carried out in each community according to described interference value;
Step (15), calculates the total interference value of the whole network as optimization aim currency, if described optimization aim currency is less than described optimization aim initial value, optimization aim initial value is updated to optimization aim currency, execution step (12), otherwise finish.
2. mobile communication frequency correction optimization method according to claim 1, is characterized in that, described step (14), specifically comprises:
Step (21), puts in order and gets first community as current area according to described interference value;
Step (22), judges whether to carry out frequency correction to current area, if cannot carry out frequency correction, and execution step (24), if can carry out frequency correction, execution step (23);
Step (23), upgrades the frequency of this community according to frequency correction result, execution step (24);
Step (24), if put in order and also have next community according to described interference value, puts in order and gets next community as current area according to described interference value, execution step (22), otherwise execution step (15).
3. mobile communication frequency correction optimization method according to claim 2, is characterized in that, described step (22), specifically comprises:
Step (31), adds up the frequency point allocation situation of its adjacent area and obtains the disturbed condition of each frequency current area, and the ascending sequence of interference coefficient that frequency is subject to by frequency obtains frequency list;
Step (32), if also have frequency in described frequency list, from described frequency list, take out the frequency of interference coefficient minimum as current frequency, from described frequency list, delete current frequency, otherwise judgement can not be carried out frequency correction to current area, execution step (24);
Step (33) judges whether current frequency strictly meets stringent condition, if do not met, and execution step (32), otherwise using current frequency as frequency correction result, judgement can be carried out frequency correction to current area, execution step (23).
4. mobile communication frequency correction optimization method according to claim 1, is characterized in that, described interference value R
i=r
i is same× a+r
i neighbour, wherein R
irepresent the interference value of i community, r
i is samerepresent the co-channel interference value that i community is subject to, r
i neighbourrepresent the adjacent frequency interference value that i community is subject to, a is the weights ratio arranging.
5. mobile communication frequency correction optimization method according to claim 1, is characterized in that, the total interference value of described the whole network is the summation of the interference value of all communities in the whole network.
6. a mobile communication frequency correction optimization system, is characterized in that, comprising:
Optimization aim initial value acquisition module, calculates the total interference value of the whole network as optimization aim initial value;
Area interference value acquisition module, calculates the interference value of each community;
Interference value order module, puts in order the interference value of the each community interference value that obtains each community that sorts from big to small;
Frequency correcting module, puts in order frequency correction is carried out in each community according to described interference value;
Optimization aim comparison module, calculate the total interference value of the whole network as optimization aim currency, if described optimization aim currency is less than described optimization aim initial value, optimization aim initial value is updated to optimization aim currency, carry out area interference value acquisition module, otherwise finish.
7. mobile communication frequency correction optimization system according to claim 6, is characterized in that, described frequency correcting module, specifically comprises:
Current area initialization submodule, puts in order and gets first community as current area according to described interference value;
Current area judges submodule, judges whether to carry out frequency correction to current area, if cannot carry out frequency correction, carries out current area and obtains submodule, if can carry out frequency correction, carries out frequency and upgrades submodule;
Frequency upgrades submodule, upgrades the frequency of this community according to frequency correction result, carries out current area and obtains submodule;
Current area obtains submodule, if put in order and also have next community according to described interference value, according to described interference value, puts in order and gets next community as current area, carries out current area and judges submodule, otherwise carry out optimization aim comparison module.
8. mobile communication frequency correction optimization system according to claim 7, is characterized in that, described current area judges submodule, specifically comprises:
Frequency disturbs and obtains submodule, and current area is added up the frequency point allocation situation of its adjacent area and obtained the disturbed condition of each frequency, and the ascending sequence of interference coefficient that frequency is subject to by frequency obtains frequency list;
Current frequency obtains submodule, if also have frequency in described frequency list, the frequency that takes out interference coefficient minimum from described frequency list is as current frequency, from described frequency list, delete current frequency, otherwise judgement can not be carried out frequency correction to current area, carry out current area and obtain submodule;
Current frequency judges that submodule judges whether current frequency strictly meets stringent condition, if do not met, carry out current frequency and obtain submodule, otherwise using current frequency as frequency correction result, judgement can be carried out frequency correction to current area, carries out frequency and upgrades submodule.
9. mobile communication frequency correction optimization system according to claim 6, is characterized in that, described interference value R
i=r
i is same× a+r
i neighbour, wherein R
irepresent the interference value of i community, r
i is samerepresent the co-channel interference value that i community is subject to, r
i neighbourrepresent the adjacent frequency interference value that i community is subject to, a is the weights ratio arranging.
10. mobile communication frequency correction optimization system according to claim 6, is characterized in that, the total interference value of described the whole network is the summation of the interference value of all communities in the whole network.
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