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Method and system for solving high-rise building code division multiple access signal pilot pollution

A pilot pollution and signal technology, applied in the field of code division multiple access, can solve the problems of dropped calls, mobile phone occupation, co-channel interference, etc., to avoid idle disconnection or dropped calls, achieve smooth handover, and solve co-channel interference. Effect

Active Publication Date: 2011-12-21
CHINA TELECOM CORP LTD
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Problems solved by technology

[0004] The mobile phone occupies the same frequency as the outdoor signal on the upper floor, which leads to the same frequency interference and cannot form a stable coverage problem;
[0005] Even if the mobile phone occupies a pure indoor dedicated frequency point signal by using a separate frequency difference setting indoors, it will not be able to switch normally with the outdoor frequency point signal when entering or leaving the building, resulting in disconnection or call drop
[0006] Therefore, it is difficult to form effective coverage by simply increasing the signal strength in the traditional way, which has become a bottleneck restricting the improvement of CDMA network quality, and it is urgent to introduce new technologies to solve key problems

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  • Method and system for solving high-rise building code division multiple access signal pilot pollution
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  • Method and system for solving high-rise building code division multiple access signal pilot pollution

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[0039] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0040] In general, the foyer of a high-rise building (including the underground garage) presents obvious independence and relevance to the interior and exterior of the high-rise building, has a relatively obvious partition with the whole building, and is connected to other areas of the high-rise building through elevators and stairs. This obvious isolation, after targeted coverage settings, can ensure that the signal in the indoor signal area will not leak to the outside and less leak to the lobby, thus forming three obvious signal areas, namely the pilot pollution area, Typical examples are indoors of buildings, especially high-rise buildings; non-pilot polluted areas, such as building foyers, underground garages, low flo...

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Abstract

The invention discloses a method and system for solving pilot pollution of code division multiple access signals in high-rise buildings, including: dividing the pilot pollution area in the building into indoor signal areas, and dividing the non-pilot pollution area in the building into Hall signal area; in the indoor signal area, configure the frequency point of the main signal as an indoor dedicated frequency point, and configure the frequency points of the output signal to include indoor dedicated frequency points and outdoor frequency points; in the hall signal area, configure the main signal frequency point The signal frequency points are outdoor frequency points, and the frequency points configured to output signals include indoor dedicated frequency points and outdoor type frequency points. The invention can realize good coverage and smooth switching of CDMA mobile communication signals for high-rise buildings, especially commercial buildings.

Description

technical field [0001] The invention relates to the technical field of code division multiple access (CDMA), in particular to a method and a system for solving pilot pollution of high-rise building code division multiple access signals. Background technique [0002] Pilot pollution is a difficult point in signal coverage of high-rise buildings. The signal coverage of high-rise buildings can be solved by building indoor coverage, but even in high-rise buildings with indoor coverage, the problem of pilot frequency pollution at the windows (especially high-rise windows) still exists. The pilot pollution problem near the window is mainly manifested in the intermittent interference of outdoor cluttered signals on areas such as the window, which seriously affects the signal quality and cannot form stable signal coverage. [0003] In general, the prior art mainly has the following disadvantages: [0004] The mobile phone occupies the same frequency as the outdoor signal on the up...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/26H04W88/08
Inventor 陈兆波马丹李波姚坚高人俊
Owner CHINA TELECOM CORP LTD
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