CN201467474U - Digital enclave system - Google Patents
Digital enclave system Download PDFInfo
- Publication number
- CN201467474U CN201467474U CN200920082812XU CN200920082812U CN201467474U CN 201467474 U CN201467474 U CN 201467474U CN 200920082812X U CN200920082812X U CN 200920082812XU CN 200920082812 U CN200920082812 U CN 200920082812U CN 201467474 U CN201467474 U CN 201467474U
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- CN
- China
- Prior art keywords
- companding
- end machine
- base station
- link
- duplexers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Mobile Radio Communication Systems (AREA)
Abstract
The utility model relates to a digital enclave system, comprising a base station, a companding near-end machine, and a companding far-end machine, wherein, the base station is connected with the companding near-end machine through a wireless channel or a wiring coupling circuit, the companding near-end machine and the companding far-end machine adopt relay wireless signal communication, the characteristics of the digital enclave system are as follows: when the base station adopts the wiring coupling circuit to connect the companding near-end machine, the companding near-end machine comprises two duplexers, two low-noise amplifiers, a combiner, a power amplifier, a forward IF frequency-shifting unit, and a reversed IF frequency-shifting unit, wherein, the two duplexers are connected through an up-link and a down-link, and the down-link is formed by the low-noise amplifiers, the forward IF frequency-shifting unit, the combiner, and a forward power amplifier which are sequentially connected according to the direction of signal transmission, and the up-link is formed by the low-noise amplifiers, the reversed IF frequency-shifting unit which are connected once according to the direction of signal transmission, and the two duplexers are respectively connected with a business retransmission antenna and a base station coupler. The utility model effectively solves the problem that signal blind regions in mountain are more at present.
Description
Technical field
The utility model relates to mobile communication technology, particularly digital enclave system.
Background technology
Mobile communications network is through communication construction person's effort in several years, network has covered most personnel activities place, but still there be much mountain village, factories and miness or an one-shot job district that intercepts away from cities and towns, by mountain, these points are in the blind spot of communication always because distance is remote, environment abominable, it is huge to drop into, also be the emphasis that project of "Communication with Every Village" need solve.
The utility model content
The utility model discloses a kind of digital enclave system, comprise base station, companding near-end machine, companding remote termination, the base station links to each other with companding near-end machine by wireless channel or wired coupling circuit, and companding near-end machine and companding remote termination adopt the relay wireless signal communication, wherein:
When the base station adopts wired coupling circuit to link to each other with companding near-end machine, companding near-end machine comprises two duplexers, two low noise amplifiers, mixer, power amplifier, forward direction intermediate frequency shift frequency unit, reverse intermediate frequency shift frequency unit, wherein between two duplexers by last, down link connects, down link is by LNA, forward direction intermediate frequency shift frequency unit, mixer, the forward direction power amplifier by side signal transmission to being connected in sequence, up link is by low noise amplifier, oppositely to once being formed by connecting, two one of duplexers connect one of professional retransmitting antenna and connect the base station coupler by side signal transmission in intermediate frequency shift frequency unit.
In addition, also comprise power subsystem, control unit, modulator-demodulator modem, power subsystem is used for to each unit power supply, and control unit is finished various controlled function, and modulator-demodulator modem gets in touch with voice dial mode and Surveillance center.Alms giver's link between companding near-end machine and the companding remote termination is the 200MHz frequency range.
The utility model adopts 200MHz microwave relay signal to bear transformation task, has solved the many problems of present mountain area signal blind zone.
Description of drawings
Fig. 1 is an embodiment system schematic of the present utility model;
Fig. 2 is an another kind of embodiment system schematic of the present utility model;
Fig. 3 is the schematic block diagram of companding near-end machine among Fig. 1;
Fig. 4 is the schematic block diagram of companding near-end machine among Fig. 2.
Embodiment
Consult Fig. 1 to Fig. 4, a kind of digital enclave system comprises base station, companding near-end machine, companding remote termination, and the base station links to each other with companding near-end machine by wireless channel or wired coupling circuit, companding near-end machine and companding remote termination employing relay wireless signal communication, wherein:
When the base station adopts wireless channel to link to each other with companding near-end machine, companding near-end machine comprises two duplexers 1, two low noise amplifiers 2, two power amplifiers, forward direction intermediate frequency shift frequency unit 3 and reverse intermediate frequency shift frequency unit 5, wherein between two duplexers 1 by last, down link connects, down link is by low noise amplifier 2, forward direction intermediate frequency shift frequency unit 3, forward direction power amplifier 4 by side signal transmission to being connected in sequence, up link is by low noise amplifier 2, reverse intermediate frequency shift frequency unit 5, oppositely to being connected in sequence, two 1 one of duplexers connect one of alms giver's reception antenna and connect professional retransmitting antenna power amplifier 6 by side signal transmission;
When the base station adopts wired coupling circuit to link to each other with companding near-end machine, companding near-end machine comprises two duplexers 1, two low noise amplifiers 2, mixer 10, power amplifier, forward direction intermediate frequency shift frequency unit 3, reverse intermediate frequency shift frequency unit 5, wherein between two duplexers 1 by last, down link connects, down link is by LNA 2, forward direction intermediate frequency shift frequency unit 3, mixer 10, forward direction power amplifier 4 by side signal transmission to being connected in sequence, up link is by low noise amplifier 2, oppositely to being connected in sequence, two 1 one of duplexers connect one of professional retransmitting antenna and connect the base station coupler by side signal transmission in intermediate frequency shift frequency unit 5.
In addition, also comprise power subsystem 7, control unit 8, modulator-demodulator 9, power subsystem 7 is used for to each unit power supply, and control unit 8 is finished various controlled function, and modulator-demodulator 9 usefulness voice dial modes and Surveillance center get in touch.
During installation, the near-end machine generally is installed in the donor base station machine room, also can not be installed in other places that are installed in the donor base station in the base station overlay area according to this near-end machine of needs of environment, and remote termination is installed in the blind area.Radio Link between near-end machine and the remote termination is alms giver's link, and link is the 200MHz frequency range.
Link frequency is at the up use 223～225MHz of 200MHz frequency range and descending use 233～235MHz.
During use, the relay wireless signal is being born the task of transmission.By the near-end machine base station 900MHz downstream signal is become 200MHz microwave relay signal and be transferred to remote termination, remote termination is reduced into the 900MHz downstream signal with this 200MHz microwave signal frequency conversion again and is transmitted to travelling carriage.Simultaneously, remote termination becomes 200MHz microwave relay signal with the 900MHz upward signal frequency conversion that travelling carriage sends, emission is transferred to the near-end machine, the near-end machine is the 900MHz upstream frequency that travelling carriage sends with this 200MHz microwave signal frequency conversion again, be transferred to the base station, thereby finish 900MHz by the task that the 200MHz signal transmits, enlarged the coverage of base station.
Claims (3)
1. digital enclave system, comprise the base station, companding near-end machine, the companding remote termination, the base station links to each other with companding near-end machine by wireless channel or wired coupling circuit, companding near-end machine and companding remote termination adopt the relay wireless signal communication, it is characterized in that: when the base station adopts wired coupling circuit to link to each other with companding near-end machine, companding near-end machine comprises two duplexers, two low noise amplifiers, mixer, power amplifier, forward direction intermediate frequency shift frequency unit, reverse intermediate frequency shift frequency unit, wherein between two duplexers by last, down link connects, down link is by LNA, forward direction intermediate frequency shift frequency unit, mixer, the forward direction power amplifier by side signal transmission to being connected in sequence, up link is by low noise amplifier, oppositely to once being formed by connecting, two one of duplexers connect one of professional retransmitting antenna and connect the base station coupler by side signal transmission in intermediate frequency shift frequency unit.
2. according to the described a kind of digital enclave of claim 1 system, it is characterized in that: also comprise power subsystem, control unit, modulator-demodulator modem, power subsystem is used for to each unit power supply, control unit is finished various controlled function, and modulator-demodulator modem gets in touch with voice dial mode and Surveillance center.
3. according to the described a kind of digital enclave of claim 2 system, it is characterized in that: the alms giver's link between companding near-end machine and the companding remote termination is the 200MHz frequency range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920082812XU CN201467474U (en) | 2009-07-22 | 2009-07-22 | Digital enclave system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920082812XU CN201467474U (en) | 2009-07-22 | 2009-07-22 | Digital enclave system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201467474U true CN201467474U (en) | 2010-05-12 |
Family
ID=42394819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920082812XU Expired - Fee Related CN201467474U (en) | 2009-07-22 | 2009-07-22 | Digital enclave system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201467474U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102790975A (en) * | 2012-08-01 | 2012-11-21 | 成都福兰特电子技术有限公司 | 4G (The Fourth Generation) digital administrative enclave covering system |
| CN103188001A (en) * | 2011-12-28 | 2013-07-03 | 成都芯通科技股份有限公司 | Digital enclave system and link gain balance method thereof |
-
2009
- 2009-07-22 CN CN200920082812XU patent/CN201467474U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103188001A (en) * | 2011-12-28 | 2013-07-03 | 成都芯通科技股份有限公司 | Digital enclave system and link gain balance method thereof |
| CN103188001B (en) * | 2011-12-28 | 2015-07-01 | 成都芯通科技股份有限公司 | Digital enclave system and link gain balance method thereof |
| CN102790975A (en) * | 2012-08-01 | 2012-11-21 | 成都福兰特电子技术有限公司 | 4G (The Fourth Generation) digital administrative enclave covering system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20120722 |