Repeater suitable for TDD system mobile communication system

Abstract

The station includes a RF switch array (RFSA), a time synchronization controller (TSC), a donor antenna and a business antenna, a low noise amplifier (LNA) co-used by the up-going and down-going links, a digital gain controller (DGC), a linear power amplifier (LPA) and a coupler. Under control of the time synchronization control signal, the RFSA sets the LNA, DGC and LPA at the up-going and down-going state to form the up-going and down-going RF amplification link via time-sharing. At the donor antenna end, the coupler connects to the RFSA to pickup the up-going and down-going signals as the input of the TSC and DGC. Due to the up-going and down-going links share the amplifier, the volume and cost are reduced.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a repeater suitable for the TDD system mobile communication system, which realizes extension and coverage in PHS, SCDMA, TD-SCDMA and other mobile communication systems using the time division duplex (TDD) system. Background technique [0002] In the mobile communication system adopting time division duplex (TDD) system, the traditional repeater design method is generally composed of independent uplink and downlink RF power amplification links and a signal-controlled RF switch array that realizes time synchronization with the base station. [0003] Please refer to Figure 1, which is a schematic diagram of the basic structure of a repeater designed in a traditional way. A traditional repeater includes radio frequency switch arrays 101A and 101B, an uplink amplifier 102 , a downlink amplifier 103 and a time synchronization controller 104 . During the time when the base station ...

AI Technical Summary

Problems solved by technology

[0005] This shows that above-mentioned existing repeater station that is applicable to time division duplex system mobile communication system obviously still has inconvenience and defect in structure and use, and it needs to use uplink amplifier and downlink amplifier simultaneously, and It is necessary to obtain accurate control signals synchronized with the time of the base station, and strictly control the switching of the RF switch matrix, the on and off of the uplink and downlink amplifiers in time, so it has the defects of complex product structure and high product manufacturing cost , and needs to be further improved

In order to solve the existing problems of repeaters suitable for TDD mobile communication systems, relevant manufacturers have tried their best to find solutions, but for a long time no suitable design has been developed, and general products have not been suitable. A cut structure can solve the above problems, which is obviously a problem that the relevant industry is eager to solve

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