CN102547750B - Frequency quick planning method without same adjacent frequency interference - Google Patents
Frequency quick planning method without same adjacent frequency interference Download PDFInfo
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- CN102547750B CN102547750B CN201210045939.0A CN201210045939A CN102547750B CN 102547750 B CN102547750 B CN 102547750B CN 201210045939 A CN201210045939 A CN 201210045939A CN 102547750 B CN102547750 B CN 102547750B
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Abstract
The invention relates to a frequency quick planning method without the same adjacent frequency interference. The method belongs to the field of frequency multiplexing in wireless communication, and is suitable for the 4*3 frequency multiplexing mode and the 2*6 frequency multiplexing mode. The method is simple and quick, and the same adjacent frequency interference can not happen to the planned network. The method comprises the following steps: dividing available frequency points in a band width into six sections on average after the frequency points are sorted by size, namely the frequency points in each section are continuous, and the number difference of the frequency points in each section is less than 1; cancelling the minimum frequency point in the five sections with the larger frequency points (or the maximal frequency point in five section with the smaller frequency points); dividing the frequency points in each section into an odd frequency group and an even frequency group according to the difference in parity; and finally distributing frequency groups for four-row three-column cell groups: selecting three sections arbitrarily, distributing three odd frequency groups therein to the first row of the cell groups, distributing three even frequency groups to the third row of the cell groups, distributing three even frequency groups of the rest three sections to the second row of the cell groups, and distributing three even frequency groups to the fourth row of the cell groups.
Description
Technical field
The present invention relates to a kind of planing method of cordless communication network channeling, the method belongs to the multiplexing field of radio communication medium frequency.
Background technology
In mobile communication process, after mobile subscriber's Content of Communication converts frequency signal to by travelling carriage (mobile communication equipment such as mobile phone) and transmit alternately between communication base station (being responsible for the physical communication equipment of transmitting/receiving wireless signal specially).
National correlation department is that each telecom operators delimit special frequency separation, this frequency separation can on average be divided frequency separation that some equal portions the are little least unit as signal transmission according to related telecommunications standard, and each least unit can be at most 8 mobile subscribers' services simultaneously.Each telecom operators frequency separation is different, and frequency bandwidth is also different, and the least unit number that can divide is also different.For example, in 900MHz frequency range, 25MHz bandwidth altogether, carrier frequency separation 200KHz, channel number is 1～124, wherein, China Mobile takies 1～94 channel (890～909/935～954MHz), and CHINAUNICOM takies 96～124 channels (909～915/954～960MHz).
Each telecom operators need to, according to user density under limited frequency resource condition, set up multiple communication base stations, and each communication base station distributes one or more service frequencies, with the customer group in communication for service region.If in base station or contiguous base station is used identical or close frequency receiving and transmitting signal, these base stations, due to distance and position relation, can produce electromagnetic interference in various degree mutually, cause the mobile subscriber of base station service to occur the communication barrier in various degree.
Each telecom operators can take into full account the service frequency of peripheral base station in the process of setting up base station distribution services frequency, the service frequency of each base station will be tried one's best not close with the service frequency of peripheral base station, to reduce the interference problem in communication process.In the situation that not having better frequency resource to use, operator can carry out frequency planning, considers to redistribute the service frequency of all base stations, reaches and reduces the object of disturbing.
In order to obtain best communication quality, ensureing that under the condition of certain network capacity, frequency planning should ensure following planning requirement:
(1), the frequency in each base station can not be identical and can not be adjacent.
(2), each community and frequency in adjacent community can not be identical and can not be adjacent.
(3), the frequency in the neighbor cell of each community and neighbor cell can not be identical.
Channeling is divided into conventional channeling and tight channeling, and at conventional 4 × 3 channelings with closely in 2 × 6 channelings, an area group all comprises 12Ge community.Existing planing method is divided into artificial planing method and computer-aided planning, is all available frequencies are all assigned in area group, facts have proved, can not obtain like this one completely without the planning of disturbing with adjacent frequency.
Summary of the invention
For a difficult problem for wireless communication frequency planning, the invention discloses a kind of simple and quick frequency planning method, in the whole network after planning, there will not be same adjacent frequency to disturb, be applicable to 4 × 3 conventional frequency reuse modes and 2 × 6 frequency reuse modes closely.
Described planing method, is divided into 6 sections by whole available frequencies in bandwidth after sorting by size, and the frequency in each section is continuous, and each section of intermediate-frequeney point number is poor is less than 1.
For the consecutive points between the section of removing and section, frequency minimum in larger frequency 5 sections is deleted to (or the maximum frequency in less frequency 5 sections is deleted), forbid this 5 frequencies.
Each section of intermediate-frequeney point is divided into a strange group of frequencies and an even group of frequencies by parity difference, obtains altogether 12 class frequencys.
Be a four lines three be listed as area group dividing frequency group time, select arbitrarily 3 sections, 3 strange frequency components are wherein fitted on to the first row of area group, 3 even frequency components are fitted on the third line of area group; The second row that all the other 3 strange frequency components of 3 sections is fitted on to area group, 3 even frequency components are fitted on the fourth line of area group; By 4 × 3 channelings or 2 × 6 frequency reuse modes, it is whole planning region dividing frequency group.
The planing method that application is described, 4 × 3 frequency reuse modes routinely or closely 2 × 6 frequency reuse modes will be frequency multiplexed to communities all in whole communication network.
By described planning, whole communication network meets following technical requirement:
(1), the frequency in each base station is not identical and non-conterminous.
(2), each community is not identical and non-conterminous with the frequency in adjacent community.
(3), the frequency in the neighbor cell of each community and neighbor cell is not identical.
By described planning, does not disturb with frequency and adjacent frequency any two minizones, and whole communication network quality reaches optimum state.
Described planing method is simple, fast, and only forbid 5 frequencies and just use whole Internet phone-calling quality to reach best.
Brief description of the drawings
Fig. 1 is the frequency segmentation figure of the 19MHz bandwidth of GSM900M system.
Fig. 2 is the piecewise graph of deleting after intersegmental adjacent frequency.
Fig. 3 is frequency packet diagram.
Fig. 4 is the cell frequency component figure that 4 row three are listed as.
Fig. 5 is 4 × 3 frequency reuse mode cell frequency component figures.
Fig. 6 is 2 × 6 frequency reuse mode cell frequency component figures.
Embodiment
Below in conjunction with accompanying drawing, frequency planning method of the present invention is described in detail.
Embodiment
19MHz bandwidth for China Mobile GSM 900M system is planned.This bandwidth has comprised 1-94 frequency, does not consider that microcellulor reserves frequency.Concrete planning process is as follows:
Whole available frequencies in bandwidth are divided into 6 sections after sorting by size, i.e. first paragraph 1-16, second segment 17-32, the 3rd section of 33-48, the 4th section of 49-64, the 5th section of 65-79, the 6th section of 80-94.Segmentation result as shown in Figure 1.
For the consecutive points between the section of removing and section, frequency maximum in less frequency 5 sections is deleted, delete frequency 16,32,48,64,79.Delete after the adjacent frequency between section, in section, frequency as shown in Figure 2.
Each section of intermediate-frequeney point is divided into a strange group of frequencies and an even group of frequencies by parity difference, obtains altogether 12 class frequencys.The formation of each group of frequencies as shown in Figure 3.
Be a four lines three be listed as area group dividing frequency group time, select arbitrarily 3 sections, 3 strange frequency components are wherein fitted on to the first row of area group, 3 even frequency components are fitted on the third line of area group; The second row that all the other 3 strange frequency components of 3 sections is fitted on to area group, 3 even frequency components are fitted on the fourth line of area group.Group of frequencies in area group is distributed situation as shown in Figure 4.
The planing method that application is described, 4 × 3 frequency reuse modes routinely or closely 2 × 6 frequency reuse modes are whole planning region dividing frequency group.
When frequency component is fitted on to the cellular cell of 4 × 3 frequency reuse modes, the group of frequencies of each community is distributed result as shown in Figure 5.
When frequency component is fitted on to the triangle community of 2 × 6 frequency reuse modes, the group of frequencies of each community is distributed result as shown in Figure 6.
Claims (2)
1. the present invention relates to the frequency quick planning method that a kind of nothing is disturbed with adjacent frequency, available frequency in bandwidth after sorting by size, is divided into 6 sections by the method, and the frequency in each section is continuous, and each section of intermediate-frequeney point number is poor is less than 1; Maximum frequency in frequency minimum in larger frequency 5 sections or less 5 sections of frequency is deleted; Each section of intermediate-frequeney point is divided into a strange group of frequencies and an even group of frequencies by parity difference; The area group dividing frequency group being finally listed as for four lines three: select arbitrarily 3 sections, 3 strange frequency components are wherein fitted on to the first row of area group, 3 even frequency components are fitted on the third line of area group, the second row that all the other 3 strange frequency components of 3 sections is fitted on to area group, 3 even frequency components are fitted on the fourth line of area group.
2. according to the frequency planning method of claim 1, it is characterized in that deleting the consecutive points between section and section, at least delete 5 frequencies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210045939.0A CN102547750B (en) | 2012-02-27 | 2012-02-27 | Frequency quick planning method without same adjacent frequency interference |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210045939.0A CN102547750B (en) | 2012-02-27 | 2012-02-27 | Frequency quick planning method without same adjacent frequency interference |
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| CN102547750A CN102547750A (en) | 2012-07-04 |
| CN102547750B true CN102547750B (en) | 2014-08-27 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5734983A (en) * | 1996-06-20 | 1998-03-31 | Northern Telecom Limited | Frequency assignment in a cellular radio system |
| CN1242129A (en) * | 1996-12-31 | 2000-01-19 | 艾利森公司 | Frequency assigning method in a seven cell frequency plan for a cellular communications system without adjacent frequencies |
| CN101409884A (en) * | 2008-11-18 | 2009-04-15 | 中国移动通信集团福建有限公司 | Method for optimizing network frequency based on measurement report |
| CN102149095A (en) * | 2010-02-08 | 2011-08-10 | 中国移动通信集团福建有限公司 | Frequency point setting method and device for mobile communication system |
-
2012
- 2012-02-27 CN CN201210045939.0A patent/CN102547750B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5734983A (en) * | 1996-06-20 | 1998-03-31 | Northern Telecom Limited | Frequency assignment in a cellular radio system |
| CN1242129A (en) * | 1996-12-31 | 2000-01-19 | 艾利森公司 | Frequency assigning method in a seven cell frequency plan for a cellular communications system without adjacent frequencies |
| CN101409884A (en) * | 2008-11-18 | 2009-04-15 | 中国移动通信集团福建有限公司 | Method for optimizing network frequency based on measurement report |
| CN102149095A (en) * | 2010-02-08 | 2011-08-10 | 中国移动通信集团福建有限公司 | Frequency point setting method and device for mobile communication system |
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