Circuit for realizing synchronization by using modem in shrouding system and its method

A modem and circuit technology, which is applied in the field of mobile communication, can solve the problems of high cost and complex technical structure, and achieve the effect of cost reduction, simple technology, and accurate uplink and downlink time slot switching

Inactive Publication Date: 2007-02-07
广州钟鼎木林网络技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The traditional TD-SCDMA coverage system achieves synchronization through a separate synchronization module. The technical composition of this solution is very complicated, and the cost is also high

Method used

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  • Circuit for realizing synchronization by using modem in shrouding system and its method
  • Circuit for realizing synchronization by using modem in shrouding system and its method
  • Circuit for realizing synchronization by using modem in shrouding system and its method

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Embodiment Construction

[0036] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0037] The invention discloses a circuit for realizing synchronization by using a modem in a TD-SCDMA repeater coverage system. The circuit mainly uses a modem and a signal driver module, and uses the corresponding signal processing technology to realize the frame synchronization of the TD-SCDMA signal. According to the frame structure characteristics of TD-SCDMA uplink and downlink time slot allocation does not change in real time, control the corresponding power switch to switch at the corresponding switching point, so as to switch between uplink and downlink.

[0038] see figure 1 , the present invention is applied in a TD-SCDMA repeater coverage system, and the repeater coverage system includes a monitoring subsystem (not shown), a coupler 103, a near-end switching circuit 104, a downlink amplification circuit 105, a remote end switching circuit 106 and...

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PUM

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Abstract

The invention relates to a circuit for using modulator to realize synchronization in TD-SCDMA cover system, wherein it comprises a modulator, a coupler and a signal adjusting module; the modulator outputs synchronous instruct signal and the second time-slit switch point of TD-SCDMA to the connected signal adjusting module; said signal adjusting module, based on input synchronous instruct signal and switch point information, generates multi-path switch control signal to the ascending and descending chains; when the base station signal is descending time slit, closing the ascending chain and opening the descending chain; or else, closing the descending chain and opening the ascending chain. In addition, the invention also discloses a relative method. Compared with traditional technique, the invention has low cost.

Description

【Technical field】 [0001] The invention relates to the field of mobile communication, in particular to a circuit and a method for realizing synchronization of a TD-SCDMA repeater coverage system using a modem. 【technical background】 [0002] With the rapid development of my country's mobile communication industry, the current 2nd or 2.5th generation mobile communication systems cannot meet the huge needs of the society in terms of capacity and service capabilities, so the 2nd or 2.5th generation mobile communication systems will be replaced by the third Generation (3G) mobile communication system replaced. In order to gradually and flexibly evolve into a third-generation network on the basis of the second-generation network, 3G has three communication standards: WCDMA, cdma2000, and TD-SCDMA. TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, Time Division Synchronous Code Division Multiple Access, referred to as TD-SCDMA) technology was proposed by China and ...

Claims

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Application Information

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IPC IPC(8): H04L27/26H04B7/14
Inventor 赖文强
Owner 广州钟鼎木林网络技术有限公司
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