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Frequency planning method of TD-SCDMA (Time Division Synchronization Code Division Multiple Access) cells

A TD-SCDMA, frequency planning technology, applied in the field of mobile communication, can solve the problem of not making full use of frequency resources, and achieve the effect of improving efficiency

Inactive Publication Date: 2011-11-16
POTEVIO INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0010] It can be seen that the main purpose of the TD-SCDMA cell frequency planning method provided by the prior art is to find the least frequency resources to meet the system requirements. When the frequency resources are relatively abundant, the frequency resources cannot be fully utilized. Therefore, the prior art provides The frequency planning method of TD-SCDMA cell does not provide the optimal frequency point for each cell

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  • Frequency planning method of TD-SCDMA (Time Division Synchronization Code Division Multiple Access) cells
  • Frequency planning method of TD-SCDMA (Time Division Synchronization Code Division Multiple Access) cells

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Embodiment Construction

[0049] In order to make the object, technical solution and advantages of the present invention clearer, the solutions of the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0050] figure 1 It is a flowchart of a TD-SCDMA cell frequency planning method provided by the present invention. Such as figure 1 As shown, the method includes the following steps:

[0051] Step 101, establishing a quantized interference matrix.

[0052] Specifically, step 101 includes: numbering each cell: X={1st cell, 2nd cell...Mth cell}, where X is the serial number of the cell, and M is the sum of the number of cells; Establish an M×M quantized interference matrix Among them, C ij is the first interference factor between the i-th cell and the j-th cell, and is used to represent the degree of interference between the i-th cell and the j-th cell.

[0053] In practical applications, there are many indicators used to indicate t...

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Abstract

The invention discloses a frequency planning method of TD-SCDMA (Time Division Synchronization Code Division Multiple Access) cells. The method comprises the following steps of: A, establishing a quantitative interference matrix; B, determining a distribution difficulty factor of each cell according to the quantitative interference matrix; C, determining priorities of the cells according to the quantitative interference matrix and the distribution difficulty factor of each cell; and D, sequentially distributing frequencies to each cell from high priorities to low priorities of the cells. By adopting the method disclosed by the invention, an optimal frequency can be provided to each cell.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a frequency planning method for a TD-SCDMA cell. Background technique [0002] With the development of wireless communication technology, the 3rd Generation Mobile Communication System Standardization Partnership Project (3GPP) proposed Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system. In the TD-SCDMA system, the interference between cells is avoided as much as possible through the beamforming technology, but due to the existence of problems such as delay extension and signal delay, there are still certain same-adjacent frequency and same-adjacent frequencies in the TD-SCDMA system. Code interference, in order to overcome the interference, the requirement of frequency planning is put forward. [0003] There are many algorithms used for frequency planning at present, such as graph coloring algorithm, genetic algorithm, heuristic algorithm and neural ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/14H04W16/18
Inventor 李文倩杨尧
Owner POTEVIO INFORMATION TECH
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