CN201039149Y - High separation TD-SCDMA RF remote device - Google Patents
High separation TD-SCDMA RF remote device Download PDFInfo
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- CN201039149Y CN201039149Y CNU200720095392XU CN200720095392U CN201039149Y CN 201039149 Y CN201039149 Y CN 201039149Y CN U200720095392X U CNU200720095392X U CN U200720095392XU CN 200720095392 U CN200720095392 U CN 200720095392U CN 201039149 Y CN201039149 Y CN 201039149Y
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Abstract
The utility model discloses a TD-SCDMA radio frequency zooming device with high isolation degree. The radio frequency signals sent from the uplink by a cell phone are received by an antenna, the noise signals beyond the belt are filtered out of the received radio frequency signals, and the processed signals enter a frequency conversion device for frequency conversion; the signals change, through a lower frequency conversion mixer M1 changes into intermediate frequency signals ranging from 70 MHz to 210 MHz, and by amplifying a proper level amplitude, the signals not only can compensate for the wastage of long distance transmission to the base station, but also assure the proper signal power range entering the base station, so does the downlink. The radio frequency signals are radiated around and can be received by the cell phones of consumers. The device saves space, lowers the device cost and improves the networking efficiency. Furthermore, the interface linking the radio frequency signal and the antenna adopts a radio frequency cable for short distance transmission and an optical fiber for long distance transmission, promising low wastage.
Description
Technical field
The invention belongs to the network coverage optimizing equipment of wireless telecommunications, particularly a kind of high-isolation TD-SCDMA radio frequency zooms out; Device.
Background technology
Along with closing on day by day that domestic TD-SCDMA licence plate is issued, great amount of manpower and material resources and financial resources are about to be put among the construction of 3G network.Yet the TD-SCDMA network struction needs a huge sum of money, how to guarantee the quality of network in control Capital expenditure and operation cost, is the problem that operator need directly face.As everyone knows, TD-SCDMA server equipment is the more cheap network optimization product of base station and price, and these equipment costs are occupied significant proportion in the TD-SCDMA network investment.
Yet traditional network optimization functions of the equipments are single, and environmental suitability is poor, lack flexibility, and addressing and maintenance are had higher requirement, and increased construction and operation cost.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of high-isolation TD-SCDMA radio frequency extension apparatus is provided.
The technical solution of the utility model is:
A kind of high-isolation TD-SCDMA radio frequency extension apparatus is characterized in that:
Up link is sent the radiofrequency signal of 2010MHz-2025MHz from mobile phone, by the radio channel transmission, is received by antenna then; The radiofrequency signal that receives is by the outer spurious signal of band pass filter filtering band, pass through the LNA module that Uplink/Downlink isolation annular device enters data feedback channel then, after another Uplink/Downlink isolator of process further increases isolation, outer spuious by the band that produces in the bandpass filtering filtered signal amplification process once more; The signal of handling enters converter plant and carries out frequency conversion; Because the Signal Separation effect of isolator, make signal become the intermediate-freuqncy signal of intermediate frequency range from 70MHz to 210MHz through down-conversion mixer M1, adjust to suitable level amplitude through amplifier then, both compensated of the loss of long Distance Transmission, and can guarantee to enter the appropriate signal power bracket of base station again to the base station;
Down link is drawn analog if signal from the base station, enters the frequency conversion apparatus frequency conversion; The Uplink/Downlink diverter switch makes intermediate-freuqncy signal can become the radiofrequency signal of 2010MHz-2025MHz through up-conversion mixer M2; Signal after the frequency conversion is spuious through the above-mentioned signal processing generation of band pass filter filtering; This signal enters the power amplifier module of down going channel through the Uplink/Downlink isolation annular device of radio-frequency head, behind another Uplink/Downlink isolation annular device increase isolation, it is outer spuious to amplify the band that is produced by the bandpass filtering filtered signal once more; This radiofrequency signal can be received by user mobile phone by radiation around the sky alignment.
The Uplink/Downlink diverter switch: be respectively frequency conversion apparatus, up link LNA module, downlink power amplification module; Uplink/Downlink diverter switch in three parts is finished Uplink/Downlink synchronously and is switched by unified Uplink/Downlink switching signal control.
Provide the control module of Uplink/Downlink synchronization timing switching signal to have three types: GPS; Envelope detection; The TD-SCDMA baseband chip is equal to generic module.
The utility model effect is:
In the TD-SCDMA radio frequency extension apparatus, be used in combination Uplink/Downlink isolation annular device and Uplink/Downlink diverter switch, not only increased every Uplink/Downlink from degree but also can simple and flexible realize the control of Uplink/Downlink switching signal.Owing to only need the base station to provide analog intermediate frequency signal just can realize radio frequency extension apparatus, do not need the special agreement of base station manufacturer exploitation, so scheme was good to the various TD-SCDMA base station compatibility of different vendor described in should inventing.
When can satisfying the control Capital expenditure of operator and operation cost, the TD-SCDMA network optimization equipment of radio frequency remote technology guarantees these two requirements of quality of network.
The characteristics of radio frequency remote technology are the base station can be divided into radio base band control (RadioServer) and radio frequency zooms out two parts.This wireless device part can be carried out long-range setting separately, and then reduces the Capital expenditure (CAPEX) and the operation cost (OPEX) of operator in flexible building network.
Use the radio frequency remote technology, can be flexibly, effectively according to varying environment, make up star, tree-like, chain, annular isostructure diverse network.For example, this technology can be used to expand the capacity in crowded zones such as shopping center, airport, station, and improves the covering quality that signals such as enterprise headquarters, office building or underground parking are difficult to arrive the zone.
The radio frequency remote technology is that the TD-SCDMA network has the not available advantage of other networks by the reason that numerous equipment vendors adopt.The part of former base station module is separated, separated, loaded down with trivial details maintenance work can be simplified to the RS end by RS (radio base band control section) is zoomed out with radio frequency.And a RS can connect several RRH, has both saved the space, reduces equipment cost again, improves networking efficient.And the interface that connects between the two adopts radio frequency cable under the short distance situation, adopts optical fiber long apart under the situation, and loss is few.
Description of drawings
Fig. 1 is high-isolation TD-SCDMA radio frequency extension apparatus (RRU) schematic diagram
Fig. 2 is a kind of implementation of frequency-variable module.
Embodiment:
The invention provides high-isolation TD radio frequency extension apparatus.It is characterized in that:
Up link is sent the radiofrequency signal of 2010MHz-2025MHz from mobile phone, by the radio channel transmission, is received by antenna then.The radiofrequency signal that receives is by the outer spurious signal of band pass filter filtering band, pass through the LNA module that Uplink/Downlink isolation annular device enters data feedback channel then, after another Uplink/Downlink isolator of process further increases isolation, outer spuious by the band that produces in the bandpass filtering filtered signal amplification process once more.The signal of handling enters converter plant and carries out frequency conversion.Because the Signal Separation effect of isolator, make signal become the intermediate-freuqncy signal of intermediate frequency range from 70MHz to 210MHz through down-conversion mixer M1, adjust to suitable level amplitude through amplifier then, both compensated of the loss of long Distance Transmission, and can guarantee to enter the appropriate signal power bracket of base station again to the base station.
Down link is drawn analog if signal from the base station, enters the frequency conversion apparatus frequency conversion.The Uplink/Downlink diverter switch makes intermediate-freuqncy signal can become the radiofrequency signal of 2010MHz-2025MHz through up-conversion mixer M2.Signal after the frequency conversion is spuious through the above-mentioned signal processing generation of band pass filter filtering.This signal enters the power amplifier module of down going channel through the Uplink/Downlink isolation annular device of radio-frequency head, behind another Uplink/Downlink isolation annular device increase isolation, it is outer spuious to amplify the band that is produced by the bandpass filtering filtered signal once more.This radiofrequency signal can be received by user mobile phone by radiation around the sky alignment.
The Uplink/Downlink diverter switch of the present invention in three parts: be respectively frequency conversion apparatus, up link LNA module, downlink power amplification module.Uplink/Downlink diverter switch in three parts is finished Uplink/Downlink synchronously and is switched by unified Uplink/Downlink switching signal control.Provide the control module of Uplink/Downlink synchronization timing switching signal to have three types: GPS; Envelope detection; The TD-SCDMA baseband chip.No matter be which kind of type, only need it that up-downgoing handover information is provided.Use this information, both can obtain high-isolation TD-SCDMA radio frequency extension apparatus according to principle of the present invention.
The above embodiments can help more to be expressly understood content of the present invention, but these enforcement should be interpreted as it is restriction to subject area of the present invention.Do not breaking away from and changing under the above-mentioned technological thought situation of the present invention,, obviously can also make the replacement or the change of various ways, and all should comprise within the scope of the present invention according to the ordinary skill knowledge of this area/or customary means.
Claims (3)
1. high-isolation TD-SCDMA radio frequency extension apparatus is characterized in that:
Up link is sent the radiofrequency signal of 2010MHz-2025MHz from mobile phone, by the radio channel transmission, is received by antenna then; The radiofrequency signal that receives is by the outer spurious signal of band pass filter filtering band, pass through the LNA module that Uplink/Downlink isolation annular device enters data feedback channel then, after another Uplink/Downlink isolator of process further increases isolation, outer spuious by the band that produces in the bandpass filtering filtered signal amplification process once more; The signal of handling enters converter plant and carries out frequency conversion; Because the Signal Separation effect of isolator, make signal become the intermediate-freuqncy signal of intermediate frequency range from 70MHz to 210MHz through down-conversion mixer M1, adjust to suitable level amplitude through amplifier then, both compensated of the loss of long Distance Transmission, and can guarantee to enter the appropriate signal power bracket of base station again to the base station;
Down link is drawn analog if signal from the base station, enters the frequency conversion apparatus frequency conversion; The Uplink/Downlink diverter switch makes intermediate-freuqncy signal can become the radiofrequency signal of 2010MHz-2025MHz through up-conversion mixer M2; Signal after the frequency conversion is spuious through the above-mentioned signal processing generation of band pass filter filtering; This signal enters the power amplifier module of down going channel through the Uplink/Downlink isolation annular device of radio-frequency head, behind another Uplink/Downlink isolation annular device increase isolation, it is outer spuious to amplify the band that is produced by the bandpass filtering filtered signal once more; This radiofrequency signal can be received by user mobile phone by radiation around the sky alignment.
2. high-isolation TD-SCDMA radio frequency extension apparatus according to claim 1 is characterized in that: the Uplink/Downlink diverter switch: be respectively frequency conversion apparatus, and up link LNA module, downlink power amplification module; Uplink/Downlink diverter switch in three parts is finished Uplink/Downlink synchronously and is switched by unified Uplink/Downlink switching signal control.
3. high-isolation TD-SCDMA radio frequency extension apparatus according to claim 1 is characterized in that: provide the control module of Uplink/Downlink synchronization timing switching signal to have three types: GPS; Envelope detection; The TD-SCDMA baseband chip is equal to generic module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720095392XU CN201039149Y (en) | 2007-03-02 | 2007-03-02 | High separation TD-SCDMA RF remote device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720095392XU CN201039149Y (en) | 2007-03-02 | 2007-03-02 | High separation TD-SCDMA RF remote device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201039149Y true CN201039149Y (en) | 2008-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720095392XU Expired - Fee Related CN201039149Y (en) | 2007-03-02 | 2007-03-02 | High separation TD-SCDMA RF remote device |
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| Country | Link |
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| CN (1) | CN201039149Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010037275A1 (en) * | 2008-09-23 | 2010-04-08 | Wang Shuiping | Radio-frequency signal retransmission system for mobile terminal and retransmission method thereof |
| CN105717501A (en) * | 2016-01-27 | 2016-06-29 | 中国人民解放军国防科学技术大学 | Range finding system and method based on direct RF sampling and long distance fiber transmission |
-
2007
- 2007-03-02 CN CNU200720095392XU patent/CN201039149Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010037275A1 (en) * | 2008-09-23 | 2010-04-08 | Wang Shuiping | Radio-frequency signal retransmission system for mobile terminal and retransmission method thereof |
| CN105717501A (en) * | 2016-01-27 | 2016-06-29 | 中国人民解放军国防科学技术大学 | Range finding system and method based on direct RF sampling and long distance fiber transmission |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TIANJIN SAILE XINCHUANG COMMUNICATION TECHNOLOGY C Free format text: FORMER OWNER: TIANJIN SAILE ELECTRONIC TECHNOLOGY CO., LTD. Effective date: 20111208 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 300384 NANKAI, TIANJIN TO: 300384 XIQING, TIANJIN |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20111208 Address after: 300384 Tianjin Huayuan Industrial Park Xiqing District Road No. 28 Haitai block C 4 door 401 Patentee after: Tianjin Cellular Innovation Communication Technology Co., Ltd. Address before: 300384 Tianjin City Guangdong Huayuan Industrial District Road No. 6 Building No. 2 6-401-4 Patentee before: Tianjin Saiyue Electronic Technology Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080319 Termination date: 20150302 |
|
| EXPY | Termination of patent right or utility model |