Self-adapting wireless direct passing through station

Abstract

The direct passing through station includes an active channel, a detection channel and a control channel. The said active channel includes an up going link and a down going link. The said links include same donor antenna, retransmission antenna and two duplexers, and each link includes a low noise amplifier and a power amplifier; the detection channel includes a frequency synthesizer and a mixer; the control channel includes a monitoring and controlling process unit. The frequency synthesizer generates a reference signal under control of the monitoring and controlling process unit. Reference signal passed through transmitting from and receiving by antenna is mixed with reference signal original generated by mixer and frequency synthesizer. The said mixed signal enters into the monitoring and controlling process unit, which sends out control signal to adjust gain of amplifier in active channel so as to realize self-adapting function.

Description

【Technical field】 [0001] The invention relates to a coverage system of mobile communication signals, in particular to a wireless repeater. 【Background technique】 [0002] With the promotion and popularization of mobile communication networks such as GSM and CDMA, it is fast, economical and effective to improve and optimize the network signal coverage quality by using different types of repeaters. Therefore, it is extremely important to install and use repeaters. Network optimization means, according to different working forms, repeaters can be divided into: wireless repeater, frequency shift repeater, optical fiber repeater, indoor repeater, etc., which are used in different environments according to different work requirements. [0003] For wireless repeaters, see figure 1 , its basic working method is to process the uplink signal (Fu) received by the retransmitting antenna and the downlink signal (Fd) received by the donor antenna respectively through low-noise amplificat...

AI Technical Summary

Problems solved by technology

[0011] For measure 2, the use of modern communication test methods can fully meet the test accuracy requirements, but it is necessary to carry expensive and cumbersome test instruments to the construction and installation site, and the test data only reflects the status at the time of installation, and cannot be real-time;

[0012] For measure 3, please refer to Chinese patent application No. 02115593.3, which discloses a technology for automatically detecting the antenna isolation of a wireless transmission repeater, and its implementation method is: embed the test function module into the repeater Among them, accurate antenna isolation data can be obtained by transmitting and receiving a series of in-band reference signals, and performing corresponding power detection and calculation. It can also work continuously to obtain real-time detection data. The above technical solution solves the problem of antenna isolation. Real-time automatic detection of problems, but the work of the detection module does not take into account the influence factors of the same-frequency carrier in the adjacent base station. Usually, the working carrier configuration of each base station will be adjusted and added as needed. For base stations with complex electromagnetic environments In dense areas, the reception and power detection of in-band reference signals are easily affected and cause errors. On the other hand, in-band reference signals with a certain power level are transmitted into space, which also interferes with the normal operation of adjacent base stations.

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