CN201282461Y - Intelligent time division synchronization CDMA discharging-directly station capable of self detection of isolation degree - Google Patents
Intelligent time division synchronization CDMA discharging-directly station capable of self detection of isolation degree Download PDFInfo
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- CN201282461Y CN201282461Y CNU2008201917075U CN200820191707U CN201282461Y CN 201282461 Y CN201282461 Y CN 201282461Y CN U2008201917075 U CNU2008201917075 U CN U2008201917075U CN 200820191707 U CN200820191707 U CN 200820191707U CN 201282461 Y CN201282461 Y CN 201282461Y
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Abstract
The utility model discloses an intelligent direct amplification station of a Time Division-Synchronous Code Division Multiple Access (TD-SCDMA), which can test isolation automatically, and relates to a wireless direct amplification station. The utility model comprises a donor terminal, coupling unit (6), a uplink power amplifier (3) of a downlink low-noise amplifier, a frequency selection module (5), a uplink low-noise amplifier (4) of a downlink power amplifier and a retransmission terminal which are in the prior art and connected in sequence, so as to fulfill the functions of transmitting signals by a downlink and receiving signals by an uplink. A terminal synchronization module (1) and a tine division control panel (2) are arranged on the direct amplification station, wherein, the time division control panel (2) is connected with the uplink power amplifier (3) of the downlink low-noise amplifier; and the coupling unit (6), the terminal synchronization module (1), the time division control panel (2) and the uplink low-noise amplifier (4) of the downlink power amplifier are connected in sequence. The utility model performing the functions of automatic testing and intelligent control has a perfect self protection mechanism so that can prevent devices from being damaged effectively, and has the characteristics of high reliability, simple and easy operation, and convenient use in projects.
Description
Technical field
The utility model relates to a kind of wireless discharging-directly station, relates in particular to a kind of intelligent TD SDMA (TD-SCDMA) repeater that can detect isolation voluntarily.
Background technology
Wireless discharging-directly station plays a very important role in mobile communication system, the figure that wireless discharging-directly station is all arranged in city high rise building dense, suburb, rural area, particularly in the 2G communication system that has reached its maturity (being second generation mobile communication system), wireless discharging-directly station increases the covering of network with its cheap cost; But in cost savings, wireless discharging-directly station also can bring some influences to network, as the coverage effect of network, to interference of base station etc.And wherein bring an isolation that key factor is exactly the repeater of influence; Isolation is meant the inhibition of input port, repeater to delivery outlet power, and the gain of general wireless discharging-directly station is about 90dB, and the isolation of requirement is usually than the big 20dB of gain, promptly about 110dB.Antenna installation has problems or is subjected to ectocine to change the antenna direction of wireless discharging-directly station when engineering opening, as wind, earthquake, artificial destruction etc., isolation can reduce, output signal is looped back to the input port and amplifies again, the apparatus output signal noise is worsened, influenced the coverage, capacity of overlay area, repeater etc.When isolation gained less than equipment, self-excitation can take place in the repeater, caused communication paralysis and serious interference base station.
In the 3G communication that with the data service is opera involving much singing and action, data service is had relatively high expectations to EVM, and the isolation of EVM and repeater is closely-related, and the big more EVM influence to the repeater of isolation is more little; Otherwise the more little EVM influence to the repeater of isolation is big more, the isolation when therefore needing to guarantee wireless discharging-directly station work.
In the engineering of existing network, isolation is measured the output of wireless discharging-directly station, the isolation between the input by instrument only when engineering opening, and the mounting means by adjusting antenna, increases mode such as separation net and guarantee isolation.After equipment is started working, if antenna towards being changed, isolation will change simultaneously, will have influence on the quality of network service.
Summary of the invention
The purpose of this utility model is to detect the drawback of repeater isolation at the wireless discharging-directly station of general T D-SCDMA, and a kind of intelligent TD-SCDMA repeater that can detect isolation voluntarily is provided.This repeater can according to actual reception to signal detect, detect the isolation of repeater in real time, avoid the repeater isolation to occur and reduce the influence of back, for mobile communication carrier provides the stronger intelligentized TD-SCDMA wireless discharging-directly station of high reliability of cost performance communication.
The purpose of this utility model is achieved in that
Comprise the existing alms giver's end that connects successively, coupling unit, the up power amplifier of descending LNA, frequency-selecting module, the up LNA of descending power amplifier and retransmit end, realize the function of descending transmission signal and up received signal;
Be provided with terminal synchronizes module and time-division control panel;
The time-division control panel is connected with the up power amplifier of descending LNA, realizes the handoff functionality of up-downgoing;
Coupling unit, terminal synchronizes module, time-division control panel and the up LNA of descending power amplifier are connected successively, realization is analyzed signal, extract the TD-SCDMA frame synchronizing signal, according to synchronizing signal the up LNA of descending power amplifier is carried out switch control again, realize effective, accurate enlarging function uplink and downlink signals;
The terminal synchronizes module detects donor signal, and the time-division control panel carries out statistical analysis to detected donor signal, and the reference value that calculates the isolation of repeater and isolation compares the repeater is provided with, and guarantees effective application of repeater.
The utlity model has following advantage and good effect:
1, detects Based Intelligent Control automatically;
2, perfect self-protective mechanism prevents the damage of equipment effectively;
3, have high reliability, simple, the characteristics that make things convenient for engineering to use.
Description of drawings
Fig. 1 is the TD-SCDMA frame structure;
Fig. 2 is a block diagram of the present utility model;
Fig. 3 is a workflow diagram of the present utility model.
Wherein:
1-terminal synchronizes module;
2-time-division control panel;
The up power amplifier of 3-descending LNA;
The up LNA of 4-descending power amplifier;
5-frequency-selecting module;
6-coupling unit.
English to Chinese:
TD-SCDMA-TD SDMA;
EVM-vector amplitude error.
Embodiment
Describe in detail below in conjunction with drawings and Examples:
One, structure of the present utility model
1, general structure
As Fig. 2, the utility model comprises the existing alms giver's end that connects successively, coupling unit 6, the up power amplifier 3 of descending LNA, frequency-selecting module 5, the up LNA 4 of descending power amplifier and retransmits end, realizes the function of descending transmission signal and up received signal;
Be provided with terminal synchronizes module 1 and time-division control panel 2;
Time-division control panel 2 is connected with the up power amplifier 3 of descending LNA;
The up LNA 4 of coupling unit 6, terminal synchronizes module 1, time-division control panel 2 and descending power amplifier is connected successively.
2, functional block structure
1) the terminal synchronizes module 1
Terminal synchronizes module 1 by carrying out the module of demodulation, extraction synchronizing signal to the received signal, comprises down-converter unit, demodulating unit, synchronizing signal extraction unit and communication unit for a kind of.
2) time-division control panel 2
Time-division control panel 2 reaches and base station synchronization by the detection mode that the radio frequency energy window is caught for a kind of, finds the position of two transfer points, thereby finishes the module that radio-frequency channel is switched, and comprises sampling unit, control unit and communication unit.
Two, workflow of the present utility model
As Fig. 3, workflow of the present utility model (workflow that refers to terminal synchronizes module 1 and time-division control panel 2)
Comprise the following steps:
1. A is analyzed in the donor signal position of the switch;
2. the position of the switch that provides according to signal analysis opens or closes the LNA and the power amplifier B of respective link;
3. donor signal size detection C;
4. isolation computational analysis D;
5. judge that isolation whether than the big E of reference value, is then to enter step 6., otherwise enters step 7.
6. repeater operate as normal F;
7. calculate the difference G of reference value and isolation;
8. judging the whether little H of specific damping scope of difference, is then to enter step 9.; Otherwise enter step 10.;
9. the decay gain of up-downgoing power amplifier makes attenuation equal difference I, enters step more 6.;
10. close the repeater and send alarm signal, wait for and manually recover J.
Claims (3)
1, a kind of intelligent TD-SCDMA repeater that can detect isolation voluntarily, comprise the existing alms giver's end that connects successively, coupling unit (6), the up power amplifier of descending LNA (3), frequency-selecting module (5), the up LNA of descending power amplifier (4) and retransmit end, realize the function of descending transmission signal and up received signal;
It is characterized in that:
Be provided with terminal synchronizes module (1) and time-division control panel (2);
Time-division control panel (2) is connected with the up power amplifier of descending LNA (3);
Coupling unit (6), terminal synchronizes module (1), time-division control panel (2) and the up LNA of descending power amplifier (4) are connected successively.
2, by the described repeater of claim 1, it is characterized in that:
Described terminal synchronizes module (1) by carrying out the module of demodulation, extraction synchronizing signal to the received signal, comprises down-converter unit, demodulating unit, synchronizing signal extraction unit and communication unit for a kind of.
3, by the described repeater of claim 1, it is characterized in that:
Described time-division control panel (2) reaches and base station synchronization by the detection mode that the radio frequency energy window is caught for a kind of, finds the position of two transfer points, thereby finishes the module that radio-frequency channel is switched, and comprises sampling unit, control unit and communication unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201917075U CN201282461Y (en) | 2008-10-24 | 2008-10-24 | Intelligent time division synchronization CDMA discharging-directly station capable of self detection of isolation degree |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201917075U CN201282461Y (en) | 2008-10-24 | 2008-10-24 | Intelligent time division synchronization CDMA discharging-directly station capable of self detection of isolation degree |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201282461Y true CN201282461Y (en) | 2009-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201917075U Expired - Fee Related CN201282461Y (en) | 2008-10-24 | 2008-10-24 | Intelligent time division synchronization CDMA discharging-directly station capable of self detection of isolation degree |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201282461Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801458A (en) * | 2012-01-18 | 2012-11-28 | 福建京奥通信技术有限公司 | Intelligent frequency-hopping repeater |
| CN105376763A (en) * | 2015-11-23 | 2016-03-02 | 中国联合网络通信有限公司西安市分公司 | A micro-area communication system, and an uplink noise interference suppression and energy-saving method thereof |
-
2008
- 2008-10-24 CN CNU2008201917075U patent/CN201282461Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801458A (en) * | 2012-01-18 | 2012-11-28 | 福建京奥通信技术有限公司 | Intelligent frequency-hopping repeater |
| CN102801458B (en) * | 2012-01-18 | 2014-12-24 | 福建京奥通信技术有限公司 | Intelligent frequency-hopping repeater |
| CN105376763A (en) * | 2015-11-23 | 2016-03-02 | 中国联合网络通信有限公司西安市分公司 | A micro-area communication system, and an uplink noise interference suppression and energy-saving method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090729 Termination date: 20171024 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |