Frequency quick planning method without same adjacent frequency interference
A technology of co-adjacent frequency interference and frequency planning, applied in the directions of network planning, wireless communication, electrical components, etc., can solve the problems of impossible to obtain, the frequency points cannot be the same, and cannot be adjacent to each other, and achieve the effect of a simple planning method.
Inactive Publication Date: 2012-07-04
GUANGDONG MECHANICAL & ELECTRICAL COLLEGE
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Problems solved by technology
[0007] (1), the frequency points in each base station cannot be the same and cannot be adjacent
[0008] (2), the frequency points in each cell and adjacent cells cannot be the same and cannot be adjacent
[0009] (3), the frequency points in each cell and the adjacent cell of the adjacent cell cannot be the same
Existing planning methods are divided into manual planning methods and computer-aided planning methods, all of which allocate all available frequency points to cell groups. Practice has proved that it is impossible to obtain a planning that is completely free from co-adjacent frequency interference.
Method used
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Embodiment
[0031] Plan for the 19MHz bandwidth of China Mobile's GSM900M system. This bandwidth includes frequency points 1-94, excluding frequency points reserved for microcells. The specific planning process is as follows:
[0032] All available frequency points in the bandwidth are sorted by size and divided into 6 segments on average, that is, the first segment is 1-16, the second segment is 17-32, the third segment is 33-48, the fourth segment is 49-64, and the fifth segment is 65- 79, sixth paragraph 80-94. Segmentation results such as figure 1 shown.
[0033] In order to remove the adjacent points between segments, delete the largest frequency point among the 5 segments with smaller frequency points, that is, delete frequency points 16, 32, 48, 64, and 79. After deleting the adjacent frequency points between the segments, the frequency points within the segment are as follows figure 2 shown.
[0034] Each intermediate frequency point is divided into an odd frequency group a...
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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 [0001] The invention relates to a planning method for frequency reuse of a wireless communication network, which belongs to the field of frequency reuse in wireless communication. Background technique [0002] In the process of mobile communication, the communication content of mobile users is converted into frequency signals by mobile stations (mobile communication devices such as mobile phones) and then interactively transmitted between communication base stations (physical communication devices specially responsible for sending and receiving wireless signals). [0003] Relevant departments of the state designate special frequency intervals for each telecom operator. This frequency interval can be evenly divided into several equal parts of small frequency intervals as the smallest unit of signal transmission according to relevant telecommunication standards. Each smallest unit can be up to 8 mobile phones at the same time. User Services. The frequency inte...
Claims
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Inventor 胡泽军
Owner GUANGDONG MECHANICAL & ELECTRICAL COLLEGE