Wireless communication system applied to building blind area environment

A technology of wireless communication system and blind area, which is applied in the direction of radio relay system, two-party line system station, active electrical relay system, etc., which can solve the problems of communication failure and large radio wave attenuation, and achieve good compatibility and simple construction , The effect of convenient installation and debugging

Inactive Publication Date: 2014-03-19
ZHENJIANG CITY XINGHE INTERNET OF THINGS SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are often blind spots in the radio wave coverage area of ​​the repeater station, mainly because the radio wave attenuation is very large in a certain range due to obstacles, and communication is impossible

Method used

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  • Wireless communication system applied to building blind area environment
  • Wireless communication system applied to building blind area environment

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0013] It works like this:

[0014] No central controller system: (the number of base stations is small) After the No. 3 relay station receives the terminal wireless signal, it is processed by the modulation and demodulation circuit, and the modulated signal is transmitted to other relay stations through the transmission line. After the other relay stations demodulate the voice and control signals , and then forward the voice signal wirelessly to be received by other terminals, and vice versa. There is a central controller system: as shown in the figure, when a wireless signal sent by a walkie-talkie is received by the relay station No. 5 and No. 6 at the same time, it is sent to the central controller after being processed by the modulation and demodulation circuit. Determine the strength of one of the relay stations with a strong received signal, and control the transmission of other relay stations, so that the entire system automatically works in the best signal state. The...

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PUM

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Abstract

The invention relates to a wireless communication system applied to a building blind area environment, so that a problem that a blind area of a wireless communication system of a terminal occurs caused by channel fading in hotels, restaurants, commercial buildings, large-scale and middle-scale residential estates, mine lots or tunnels and the like can be solved. According to the system, the modern electronic technology and the advanced communication means are employed and the small-power, multi-station, receiving-transmitting common-frequency, and all-station normal lead connection way is utilized skillfully, so that a problem of interphone blind area occurrence in various complex environments can be well solved. The application practice of multiple star-grade hotels and restaurants, commercial buildings, and residential estates has demonstrated that the effect of the system is good.

Description

technical field [0001] The invention relates to a wireless communication system used in a building blind area environment. Background technique [0002] The repeater station helps to expand the call range and communication capabilities of the vehicle-mounted station and handheld walkie-talkie, and greatly improves work efficiency. With the popularization of the Internet, a VoIP technology that can transmit voice, video and other services through the IP network develops rapidly, and a repeater station that transmits voice signals through the network comes into being, referred to as the IP repeater station. The IP repeater can realize global network interconnection, which greatly expands the communication capability of the repeater. Relay station is also called repeater station, repeater station, IP repeater station, repeater station / repeater station, external antenna and feeder can form a complete relay system, in short: the function of the repeater station is to relay and a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/15H04Q5/24
CPCY02D30/70
Inventor 范欣
Owner ZHENJIANG CITY XINGHE INTERNET OF THINGS SCI & TECH
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