CN201248143Y - Pressing belt ultra-far shrouding system - Google Patents
Pressing belt ultra-far shrouding system Download PDFInfo
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- CN201248143Y CN201248143Y CNU2008201453691U CN200820145369U CN201248143Y CN 201248143 Y CN201248143 Y CN 201248143Y CN U2008201453691 U CNU2008201453691 U CN U2008201453691U CN 200820145369 U CN200820145369 U CN 200820145369U CN 201248143 Y CN201248143 Y CN 201248143Y
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Abstract
The utility model relates to a pressure zone super-range covering system which comprises a proximal end machine and a remote end machine. The pressure zone super-range covering system is characterized in that the proximal end machine and the remote end machine adopt an IF signal with relatively low frequency as a transmitting relay frequency; the BTS end of the proximal end machine is connected with a GSM signal duplexer; a GSM down-bound signal of a base station is coupled with the BTS end by a feeder line to be inputted into the proximal end machine; after filtered by the GSM signal duplexer in a duplex mode, the GSM down-bound signal of the base station enters a down-bound attenuation module to be adjusted into a PWL which is suitable for the system; then the frequency of the GSM signal is lowered into an IF signal by a down-bound lowering frequency selection and conversion module so that the IF signal is enlarged in a high-capacity mode by the power amplification of the IF signal; and an outputted IF transmission signal is finally filtered by an IF signal duplexer and is transmitted by a relay transmitting antenna. The utility model has little space loss of wireless signals, strong diffracting power, far transmission distance, little external obstruction and low distortion rate during the transmission of the signal, and is suitable for the mountainous countryside.
Description
Technical field
The utility model relates to a kind of communication equipment, is meant that especially a kind of being used for surpasses the defeated frequency-selecting frequency-shift repeater that amplifies of teletransmission to digital wireless communication signal.
Background technology
Along with the develop rapidly of China's mobile communication cause, mobile communication subscriber just constantly increases, and the signal of communication in urban district, cities and towns and most rural areas is realized covering comprehensively and optimizing substantially.But the remote segment rural area is still arranged owing to be subjected to the restriction of geographical conditions and economic condition at present, also be in the blind area of wireless communication signal.Along with mobile phone popularize and people to the raising day by day of mobile communication demand for services, press for to introduce and cover the good wireless communication signal, to satisfy this regional wireless telecommunications requirement.Scenic Spot Area is developed in some rural areas successively simultaneously, and festivals or holidays, telephone traffic was higher.These regional wireless telecommunications markets are the important service growth point of mobile operator.But these local regions are wide, type complexity, user on time and space, distribute very inhomogeneous, and because the gsm wireless signal is in high-frequency band, a little less than the diffracting power, there is wretched insufficiency in spatial transmission loss and to block loss bigger to the covering of overlength distances such as hills, mountain area.The mode that in the past solved the overlength distance covering generally all adopts high-power base station, this mode is invested very big, operator's networking initial stage faces the pressure of high investment, low repayment, and actual effect is retrained by geographical environment still, coverage effect is undesirable, and common repeater is also owing to be subjected to the restriction of geographical conditions and hardware condition also can't well satisfy user demand.
Summary of the invention
The purpose of this utility model provides the super covering system far away of a kind of pressure zone, and it can realize the overlength distance transmission of wireless signal.
The utility model comprises near-end machine and remote termination, it is characterized in that, described near-end machine and remote termination adopt the relatively low intermediate-freuqncy signal of frequency as the transmission trunking frequency, the BTS end of near-end machine is connected with GSM signal duplexer, the GSM downstream signal of base station is coupled to BTS end input near-end main frame by feeder line, earlier through after this GSM signal duplexer duplex filtering, enter the downstream attenuation module and be adjusted to the level that is suitable for system, intermediate-freuqncy signal will be become by the descending frequency-selecting frequency-variable module that becomes down under the GSM signal frequency again, then use the intermediate-freuqncy signal power amplifier module that it is carried out high power and amplify, the intermediate frequency transmission signals of output finally carries out filtering by the intermediate-freuqncy signal duplexer and is launched by the repeat transmitted antenna; Near-end machine LINK end is connected with the intermediate-freuqncy signal duplexer, near-end machine upward signal is the up intermediate frequency transmission signals that remote termination launches, after the antenna reception by near-end machine LINK end, earlier through after this intermediate-freuqncy signal duplexer duplex filtering, enter up intermediate frequency LNA module and carry out the low noise processing and amplifying, by the up change frequency-selecting frequency-variable module of going up up intermediate-freuqncy signal is reduced to up GSM signal, re-use up attenuation module and be adjusted to the level signal that is suitable for system, final GSM signal duplexer by the BTS end carries out filtering and is coupled to the base station;
The LINK end of remote termination is connected with the intermediate-freuqncy signal duplexer, the remote termination downstream signal is the descending intermediate frequency transmission signals that the near-end machine launches, after its antenna by remote termination LINK end receives, earlier through after this intermediate-freuqncy signal duplexer duplex filtering, enter descending intermediate frequency LNA module again and carry out the low noise processing and amplifying, by the descending change frequency-selecting frequency-variable module of going up descending intermediate-freuqncy signal is reduced to descending GSM signal, re-use GSM signal power amplifier module and it is carried out high power be amplified to enough power, the GSM downstream signal of output finally carries out filtering by GSM signal duplexer and is transmitted into the area of coverage by the cover antenna of MS end;
The MS end of remote termination is connected with GSM signal duplexer, the remote termination upward signal is the GSM upward signal that travelling carriage launches in the area of coverage, after the antenna reception by remote termination MS end, earlier through after this GSM signal duplexer duplex filtering, enter up GSM LNA module and carry out the low noise processing and amplifying, by the up frequency-selecting frequency-variable module that becomes down up GSM signal frequency conversion is up intermediate-freuqncy signal, re-use the intermediate-freuqncy signal power amplifier module and it is carried out high power be amplified to enough power, finally carry out filtering and be transmitted to the near-end machine by the antenna of LINK end by the intermediate-freuqncy signal duplexer;
In order to reach the high degree of isolation of up-downgoing, prevent self-excitation and interference, each part of complete machine adopts the modularization framework design of technology maturation.Near-end machine and remote termination also are respectively equipped with power supply and monitoring unit, and described monitoring unit can carry out the setting of parameter and monitoring in real time to the operating state of above-mentioned each module, and it is convenient that system operation is safeguarded.
The utility model makes full use of the basic principle of " frequency of wireless signal is low more; the loss the during transmission of space is more little; diffracting power is strong ", adopt the relatively low intermediate-freuqncy signal of frequency as the transmission trunking frequency, add the system gain that design is higher, thereby realized the overlength distance transmission of wireless signal.
Description of drawings
Fig. 1 is the complete machine basic principle figure of the utility model embodiment near-end machine.
Fig. 2 is the complete machine basic principle figure of the utility model embodiment remote termination.
Fig. 3 is the super covering system schematic diagram far away of the descending pressure zone of GSM.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
As shown in Figure 1: the utility model comprises near-end machine and remote termination, it is characterized in that, described near-end machine and remote termination adopt the relatively low intermediate-freuqncy signal of frequency as the transmission trunking frequency, the BTS end of near-end machine is connected with GSM signal duplexer, the GSM downstream signal of base station is coupled to BTS end input near-end main frame by feeder line, earlier through after this GSM signal duplexer duplex filtering, enter the downstream attenuation module and be adjusted to the level that is suitable for system, intermediate-freuqncy signal will be become by the descending frequency-selecting frequency-variable module that becomes down under the GSM signal frequency again, then use the intermediate-freuqncy signal power amplifier that it is carried out high power and amplify, the intermediate frequency transmission signals of output finally carries out filtering by the intermediate-freuqncy signal duplexer and is launched by the repeat transmitted antenna; Near-end machine LINK end is connected with the intermediate-freuqncy signal duplexer, near-end machine upward signal is the up intermediate frequency transmission signals that remote termination launches, after the antenna reception by near-end machine LINK end, earlier through after this intermediate-freuqncy signal duplexer duplex filtering, enter up intermediate frequency LNA module and carry out the low noise processing and amplifying, by the up change frequency-selecting frequency-variable module of going up up intermediate-freuqncy signal is reduced to up GSM signal, re-use up attenuation module and be adjusted to the level signal that is suitable for system, final GSM signal duplexer by the BTS end carries out filtering and is coupled to the base station;
The LINK end of remote termination is connected with the intermediate-freuqncy signal duplexer, the remote termination downstream signal is the descending intermediate frequency transmission signals that the near-end machine launches, after its antenna by remote termination LINK end receives, earlier through after this intermediate-freuqncy signal duplexer duplex filtering, enter descending intermediate frequency LNA module again and carry out the low noise processing and amplifying, by the descending change frequency-selecting frequency-variable module of going up descending intermediate-freuqncy signal is reduced to descending GSM signal, re-use GSM signal power amplifier module and it is carried out high power be amplified to enough power, the GSM downstream signal of output finally carries out filtering by GSM signal duplexer and is transmitted into the area of coverage by the cover antenna of MS end;
The MS end of remote termination is connected with GSM signal duplexer, the remote termination upward signal is the GSM upward signal that travelling carriage launches in the area of coverage, after the antenna reception by remote termination MS end, earlier through after this GSM signal duplexer duplex filtering, enter up GSM LNA module and carry out the low noise processing and amplifying, by the up frequency-selecting frequency-variable module that becomes down up GSM signal frequency conversion is up intermediate-freuqncy signal, re-use the intermediate-freuqncy signal power amplifier module and it is carried out high power be amplified to enough power, finally carry out filtering and be transmitted to the near-end machine by the antenna of LINK end by the intermediate-freuqncy signal duplexer;
In order to reach the high degree of isolation of up-downgoing, prevent self-excitation and interference, each part of complete machine adopts the modularization framework design of technology maturation.Near-end machine and remote termination also are respectively equipped with power supply and monitoring unit, and described monitoring unit can carry out the setting of parameter and monitoring in real time to the operating state of above-mentioned each module, and it is convenient that system operation is safeguarded.
The utility model makes full use of the basic principle of " frequency of wireless signal is low more; the loss the during transmission of space is more little; diffracting power is strong ", adopt the relatively low intermediate-freuqncy signal of frequency as the transmission trunking frequency, for being stablized more, system is easy to remote monitoring simultaneously, monitoring unit is controlled each module by the RS485 serial interface standard, and each module of described near-end machine and remote termination all is installed in separately the cabinet; Described cabinet adopts totally enclosed type and large tracts of land casing heat dissipation design.
Consider the particularity of IF-FRE transmission, the intermediate-freuqncy signal of transmission need be compressed in the narrow bandwidth and transmit, with utilance that improves frequency and the interference that reduces other frequency.The utility model is supported multicarrier frequency-selecting frequency conversion, can the working frequency points and the shift frequency frequency of carrier wave be provided with arbitrarily in the broadband that requires by monitoring unit.Thereby the transmission in the arrowband of the GSM Signal Compression of the broad of having realized being separated by is reduced to it original frequency at last again.Below be that example illustrates its principle with the downstream signal, as shown in Figure 3.
Following advantage is arranged among the utility model embodiment:
1) adopt the IF-FRE relay transmission between remote termination and near-end machine, the wireless signal space loss is little, and diffracting power is strong, and long transmission distance is subjected to external interference little, and distortion rate is low in the signals transmission, is suitable for the rural area of mountainous region;
1) the remote termination gain is high, the receiving signal sensitivity height, and do not produce self-excitation;
2) relaying frequency occupied bandwidth is little, and the frequency efficiency height can be provided with frequency by software flexible;
3) complete machine adopts modularized design, is easy to safeguard, installs, upgrades:
4) cabinet adopts totally enclosed type and large tracts of land casing heat dissipation design, and thermal diffusivity is good, degree of protection is high.And the cabinet volume is less, and convenient transportation is installed, thereby makes this system can adapt to the terrain environment of various complexity;
5) support this locality/remote monitoring, meet monitoring protocol, conveniently a plurality of systems are carried out unified monitoring, have the active alarm function, the real-time monitoring system operating state;
6) all modules all have CPU, adopt RS485 control, and are all can be by monitoring software local or long-range each module is carried out independent operation, inquire about, are provided with the operating state of each module, can effectively reduce the human cost of Operation and Maintenance;
7) the Gain Adjustable scope is big, system's maximum gain height, and debugging is convenient, and is applied widely;
8) can be with many extension sets, cover more flexibly, more be applicable to the mountainous region, rural area.
Claims (4)
1, the super covering system far away of a kind of pressure zone, comprise near-end machine and remote termination, it is characterized in that, described near-end machine and remote termination adopt the relatively low intermediate-freuqncy signal of frequency as the transmission trunking frequency, the BTS end of near-end machine is connected with GSM signal duplexer, the GSM downstream signal of base station is coupled to BTS end input near-end main frame by feeder line, earlier through after this GSM signal duplexer duplex filtering, enter the downstream attenuation module and be adjusted to the level that is suitable for system, intermediate-freuqncy signal will be become by the descending frequency-selecting frequency-variable module that becomes down under the GSM signal frequency again, then use the intermediate-freuqncy signal power amplifier that it is carried out high power and amplify, the intermediate frequency transmission signals of output finally carries out filtering by the intermediate-freuqncy signal duplexer and is launched by the repeat transmitted antenna; Near-end machine LINK end is connected with the intermediate-freuqncy signal duplexer, near-end machine upward signal is the up intermediate frequency transmission signals that remote termination launches, after the antenna reception by near-end machine LINK end, earlier through after this intermediate-freuqncy signal duplexer duplex filtering, enter up intermediate frequency LNA module and carry out the low noise processing and amplifying, by the up change frequency-selecting frequency-variable module of going up up intermediate-freuqncy signal is reduced to up GSM signal, re-use up attenuation module and be adjusted to the level signal that is suitable for system, final GSM signal duplexer by the BTS end carries out filtering and is coupled to the base station;
The LINK end of remote termination is connected with the intermediate-freuqncy signal duplexer, the remote termination downstream signal is the descending intermediate frequency transmission signals that the near-end machine launches, after its antenna by remote termination LINK end receives, earlier through after this intermediate-freuqncy signal duplexer duplex filtering, enter descending intermediate frequency LNA module again and carry out the low noise processing and amplifying, by the descending change frequency-selecting frequency-variable module of going up descending intermediate-freuqncy signal is reduced to descending GSM signal, re-use GSM signal power amplifier module and it is carried out high power be amplified to enough power, the GSM downstream signal of output finally carries out filtering by GSM signal duplexer and is transmitted into the area of coverage by the cover antenna of MS end;
The MS end of remote termination is connected with GSM signal duplexer, the remote termination upward signal is the GSM upward signal that travelling carriage launches in the area of coverage, after the antenna reception by remote termination MS end, earlier through after this GSM signal duplexer duplex filtering, enter up GSM LNA module and carry out the low noise processing and amplifying, by the up frequency-selecting frequency-variable module that becomes down up GSM signal frequency conversion is up intermediate-freuqncy signal, re-use the intermediate-freuqncy signal power amplifier module and it is carried out high power be amplified to enough power, finally carry out filtering and be transmitted to the near-end machine by the antenna of LINK end by the intermediate-freuqncy signal duplexer;
Described near-end machine and remote termination also are respectively equipped with power supply and monitoring unit, and described monitoring unit can carry out the setting of parameter and monitoring in real time to the operating state of above-mentioned each module.
2, according to claim 1 or the super covering system far away of 2 described pressure zones, it is characterized in that described monitoring unit is controlled each module by the RS485 serial interface standard.
3, the super covering system far away of pressure zone according to claim 3 is characterized in that, can the working frequency points and the shift frequency frequency of carrier wave be provided with arbitrarily in the broadband that requires by described monitoring unit.
4, the super covering system far away of pressure zone according to claim 4 is characterized in that, each device of described near-end machine and remote termination all is installed in separately the cabinet; Described cabinet adopts totally enclosed type and large tracts of land casing heat dissipation design.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201453691U CN201248143Y (en) | 2008-08-29 | 2008-08-29 | Pressing belt ultra-far shrouding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201453691U CN201248143Y (en) | 2008-08-29 | 2008-08-29 | Pressing belt ultra-far shrouding system |
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| CN201248143Y true CN201248143Y (en) | 2009-05-27 |
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| CNU2008201453691U Expired - Fee Related CN201248143Y (en) | 2008-08-29 | 2008-08-29 | Pressing belt ultra-far shrouding system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102625477A (en) * | 2012-04-01 | 2012-08-01 | 河北人天通信技术有限公司 | 3G (third-generation) broadband digitalized super-remote wireless transmission system |
| CN102761352A (en) * | 2011-08-01 | 2012-10-31 | 深圳市云海通讯股份有限公司 | FDD-LTE (Frequency Division Duplexing-Long Term Evolution) indoor coverage system and signal transmission method |
| 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 |
| CN106301581A (en) * | 2016-07-29 | 2017-01-04 | 四川天邑康和通信股份有限公司 | The digital fiber remote termination that a kind of two-way signaling amplifies |
| CN107919899A (en) * | 2017-12-27 | 2018-04-17 | 成都西科微波通讯有限公司 | Cloud relay communications system |
-
2008
- 2008-08-29 CN CNU2008201453691U patent/CN201248143Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102761352A (en) * | 2011-08-01 | 2012-10-31 | 深圳市云海通讯股份有限公司 | FDD-LTE (Frequency Division Duplexing-Long Term Evolution) indoor coverage system and signal transmission method |
| WO2013016905A1 (en) * | 2011-08-01 | 2013-02-07 | 深圳市云海通讯股份有限公司 | Fdd-lte indoor coverage system |
| CN102625477A (en) * | 2012-04-01 | 2012-08-01 | 河北人天通信技术有限公司 | 3G (third-generation) broadband digitalized super-remote wireless transmission system |
| 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 |
| CN106301581A (en) * | 2016-07-29 | 2017-01-04 | 四川天邑康和通信股份有限公司 | The digital fiber remote termination that a kind of two-way signaling amplifies |
| CN107919899A (en) * | 2017-12-27 | 2018-04-17 | 成都西科微波通讯有限公司 | Cloud relay communications system |
| CN107919899B (en) * | 2017-12-27 | 2024-01-26 | 成都西科微波通讯有限公司 | Cloud relay communication system |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20090527 Termination date: 20140829 |
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| EXPY | Termination of patent right or utility model |