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Method for covering tunnel in time division-synchronous code division multiple access mobile communication system

A mobile communication system, synchronous code division multiple access technology, applied in communication between multiple stations, wireless communication, electrical components, etc., can solve the problems of increased coverage cost, idle equipment, inability to fully utilize, etc., and achieve coverage cost Low, improved performance, and improved signal quality effects

Active Publication Date: 2012-05-16
ZTE CORP
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  • Abstract
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  • Claims
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Problems solved by technology

[0010] However, there is no method for TD-SCDMA system to cover long tunnels at present. If the TD-SCDMA system also uses the GSM system to cover long tunnels, it cannot make full use of the characteristics of the BBU+RRU equipment architecture of the TD-SCDMA system. , not only causes the equipment to be idle, but also needs to add an additional trunk amplifier, which will inevitably increase the coverage cost

Method used

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  • Method for covering tunnel in time division-synchronous code division multiple access mobile communication system
  • Method for covering tunnel in time division-synchronous code division multiple access mobile communication system
  • Method for covering tunnel in time division-synchronous code division multiple access mobile communication system

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Embodiment Construction

[0038] The present invention will be described in further detail below through specific embodiments and accompanying drawings.

[0039] The core technical solution of the present invention is: a method for tunnel coverage in a TD-SCDMA system, which is suitable for special scenarios such as the coverage of long tunnels, including:

[0040] A. Determine the number N of single-channel RRUs supported by the BBU RRU ;

[0041] B. Determine the coverage distance D of the leakage cable of each single-channel RRU cover ;

[0042] C. According to the above N RRU and D cover and the length of the tunnel to determine the number of BBUs required to cover the tunnel;

[0043] D. In the tunnel, cascade the single-channel RRUs supported by the BBU and deploy the leakage cables serially in the tunnel; if the required number of BBUs is greater than 1, further deploy the leakage cables of each BBU serially in the tunnel.

[0044] In the present invention, a leaky cable is used to transm...

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Abstract

The invention discloses a method for covering a tunnel in a time division-synchronous code division multiple access mobile communication system, which comprises the following steps: A, determining the number NRRU of single channel remote radio frequency units supported by a base band pool; B, determining the covering distance Dcover of a leakage cable of each single channel RRU; C, determining the number of the BBUs required by covering the tunnel according to the NRRU, the Dcover and the tunnel length; D, in the tunnel, cascading the single channel RRUs supported by the BBUs and arranging the leakage cables in series in the tunnel; and further arranging the leakage cable of each BBU in series in the tunnel if the number of the BBUs required is more than 1. The method of the invention can make full use of the characteristic of the base station in a TD-SCDMA system based on BBU+RRU so as to realize the covering of long tunnel. Moreover, the method has low cost and good signal quality.

Description

technical field [0001] The invention relates to a method for a mobile communication system to cover a special scene, in particular to a method for a time division-synchronous code division multiple access (TD-SCDMA) mobile communication system to cover a tunnel. Background technique [0002] Full coverage of important roads and railways is an important part of the mobile communication system, but most of the tunnels are currently coverage blind areas of the mobile communication system, so it is necessary to formulate a special tunnel coverage solution in combination with the coverage design of the traffic line. [0003] Tunnels are mainly divided into railway tunnels, road tunnels, and subway tunnels. Each type of tunnel has different characteristics. Generally speaking, road tunnels are more spacious, while railway tunnels are generally narrower. After selecting the signal source, different antenna feeder systems should be configured according to the actual situation to co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/26H04B7/26
Inventor 曾召华
Owner ZTE CORP
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