CN104579450A - Small-sized indoor repeater with functions of automatically detecting linear state of amplifier and carrying out intelligent processing - Google Patents
Small-sized indoor repeater with functions of automatically detecting linear state of amplifier and carrying out intelligent processing Download PDFInfo
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- CN104579450A CN104579450A CN201410738301.4A CN201410738301A CN104579450A CN 104579450 A CN104579450 A CN 104579450A CN 201410738301 A CN201410738301 A CN 201410738301A CN 104579450 A CN104579450 A CN 104579450A
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- repeater
- control unit
- downlink
- amplifier
- linear
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
- H04B7/15535—Control of relay amplifier gain
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- Computer Networks & Wireless Communication (AREA)
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- Radio Relay Systems (AREA)
Abstract
The invention discloses a small-sized indoor repeater with functions of automatically detecting the linear state of an amplifier and carrying out intelligent processing. The small-sized indoor repeater comprises a power module, a downlink, an uplink and a control unit. On the basis of an existing small-sized indoor repeater, a numerical control attenuator and a downlink signal sampling circuit are additionally arranged on the uplink and the downlink, a detection program and an intelligent processing program are arranged in the control unit, and the detection program of the control unit is used for detecting whether the variable quantity of the output power of the repeater is directly proportional to the variable quantity of the gain, thereby judging whether the repeater exceeds the linear working state; if the repeater exceeds the linear working state, the intelligent processing program of the control unit sends a control command for controlling the numerical control attenuator, and the numerical control attenuator attenuates the uplink and the downlink until the repeater is adjusted to be in the linear working state, so that the technical difficulty of mounting construction is reduced. By virtue of a self-checking and repairing system of equipment in long-term operation, the repeater can be in the optimum working state for a long time, the equipment is self-protected, and the network is protected.
Description
Technical field
The present invention relates to a kind of moving communicating field, particularly a kind of indoor small repeater with automatic detecting amplifier linear condition and Intelligent treatment.
Background technology
Indoor small repeater is more suitable between high buildings and large mansions in a compact mass in city in the mobile communication network, as extension base station range, fills the extremely effective equipment of one of coverage hole.Along with developing rapidly of the communications industry, also more and more higher to its requirement.
Existing indoor small repeater as shown in Figure 1, comprises power module, down link, up link and phase-locked loop CPU 23; By power module be signal downlink link, signal uplink link and phase-locked loop CPU 23 provide working power.Wherein, described down link comprises the exterior aerial 1, first duplexer 2, descending low noise amplifier 3, downstream signal filter 4, downstream signal digital pad 5, downstream signal alc circuit 6, downstream signal frequency-selecting amplification module 7, downlink power amplifier 8, descending power testing circuit 9, first isolator 10, second duplexer 12 and the domestic aerial 11 that are connected successively; Wherein, described downstream signal alc circuit 6 comprises downstream signal analog attenuator 61 and downstream signal comparison amplifier 62, the control end that input connects the feedback end of descending power testing circuit 9, output connects downstream signal analog attenuator 61 of downstream signal comparison amplifier 62; The corresponding output end of phase-locked loop CPU 23 connects the control end of downstream signal frequency-selecting amplification module 7.Described up link comprises domestic aerial 11, second duplexer 12, up low noise amplifier 13, upward signal filter 14, upward signal digital pad 15, upward signal alc circuit 16, upward signal frequency-selecting amplification module 17, ascending power amplifier 18, ascending power testing circuit 19, second isolator 20, first duplexer 2 and the exterior aerial 1 that are connected successively; Described upward signal alc circuit 16 comprises upward signal analog attenuator 161 and upward signal comparison amplifier 162, the control end that input connects the feedback end of ascending power testing circuit 19, output connects upward signal analog attenuator 161 of upward signal comparison amplifier 162; The corresponding output end of phase-locked loop CPU 23 connects the control end of upward signal frequency-selecting amplification module 17.Also comprise the descending gain manual adjustment circuit 21 of the control end being connected to downstream signal digital pad 5 and upward signal digital pad 15 and up gain manual adjustment circuit 22.
This indoor small repeater is a kind of two-way amplifier, and except strictly designing by technical specification, producing, environment factor, engineering design and construction are also important steps, and numerous factors can affect the linear index of repeater.And the deterioration of linear index can affect communication quality, and even affect whole communication network and make it paralyse.Paralysis network in find interference source be one time-consuming, the work of effort.In the urgent need to the reliability ensureing communication system and the promptness of dealing with problems on market, with the indoor small repeater of Intelligent treatment.
Summary of the invention
For above-mentioned problem, the object of the invention is to propose a kind of indoor small repeater with automatic detecting amplifier linear condition and Intelligent treatment, it can detecting amplifier linear condition carry out Intelligent treatment automatically, thus reduce the technical difficulty of installation, and repeater is made to be in optimum Working for a long time.
To achieve these goals, the present invention is by the following technical solutions:
With an indoor small repeater for automatic detecting amplifier linear condition and Intelligent treatment, comprise power module, down link, up link and control unit;
By power module be down link, up link and control unit provide working power;
Described down link comprises the exterior aerial, first duplexer, descending low noise amplifier, downstream signal filter, downstream signal digital pad, downstream signal alc circuit, descending numerical-control attenuator, downstream signal frequency-selecting amplification module, downlink power amplifier, downstream signal sample circuit, the first isolator, the second duplexer and the domestic aerial that are connected successively;
Described up link comprises the domestic aerial, the second duplexer, up low noise amplifier, upward signal filter, upward signal digital pad, upward signal alc circuit, up numerical-control attenuator, upward signal frequency-selecting amplification module, ascending power amplifier, upward signal sample circuit, the second isolator, first duplexer and the exterior aerial that are connected successively;
The feedback end of described upward signal sample circuit and described downstream signal sample circuit is connected to the respective input of described control unit respectively, and the corresponding output end of described control unit connects the corresponding control end of descending numerical-control attenuator, downstream signal frequency-selecting amplification module, downlink power amplifier, up numerical-control attenuator, upward signal frequency-selecting amplification module and ascending power amplifier respectively;
Described control unit is built-in with trace routine and Intelligent treatment program, whether the variable quantity being detected repeater power output by the trace routine of control unit is directly proportional with the variable quantity of gain, judge whether repeater exceeds linear working state thus, if exceed linear working state, the control command controlling uplink and downlink numerical-control attenuator is then sent by the Intelligent treatment program of control unit, by uplink and downlink numerical-control attenuator, uplink and downlink link is produced to the effect of decay, until repeater is adjusted linear operating state.
Above-mentioned trace routine comprises instant trace routine when timing trace routine and signal exceed pre-determined threshold.
Described upward signal sample circuit and downstream signal sample circuit include micro-band sawtooth pattern list directional coupler and the broadband great dynamic range linear detector of the high directivity be connected.
By adopting preceding solution, the invention has the beneficial effects as follows: by the mating reaction of uplink and downlink signal sampling circuit, control unit and uplink and downlink numerical-control attenuator, can detecting amplifier linear condition automatically, and carry out Intelligent treatment when exceeding linear working state, by uplink and downlink numerical-control attenuator, uplink and downlink link is produced to the effect of decay, until repeater is adjusted linear operating state.Thus reduce technical difficulty, the shortening installation period of installation, guarantee construction quality, in long-time running, rely on self-inspection and the repair system of equipment, repeater can be made to be in optimum Working for a long time, protect equipment self, also protect network.
Accompanying drawing explanation
Fig. 1 is the theory diagram of existing indoor small repeater;
Fig. 2 is theory diagram of the present invention.
Embodiment
Now the present invention is further described with embodiment by reference to the accompanying drawings.
A kind of indoor small repeater with automatic detecting amplifier linear condition and Intelligent treatment of the present invention, comprises power module (not shown), down link, up link and control unit 230;
By power module be down link, up link and control unit 230 provide working power;
Described down link comprises the exterior aerial 1, first duplexer 2, descending low noise amplifier 3, downstream signal filter 4, downstream signal digital pad 5, downstream signal alc circuit 6, descending numerical-control attenuator 24, downstream signal frequency-selecting amplification module 7, downlink power amplifier 8, downstream signal sample circuit 90, first isolator 10, second duplexer 12 and the domestic aerial 11 that are connected successively.
Described up link comprises domestic aerial 11, second duplexer 12, up low noise amplifier 13, upward signal filter 14, upward signal digital pad 15, upward signal alc circuit 16, up numerical-control attenuator 25, upward signal frequency-selecting amplification module 17, ascending power amplifier 18, upward signal sample circuit 19, second isolator 20, first duplexer 2 and the exterior aerial 1 that are connected successively.
Described downstream signal alc circuit 6 comprises downstream signal analog attenuator 61 and downstream signal comparison amplifier 62, the control end that input connects the feedback end of following downstream signal sample circuit 90 (output of broadband great dynamic range linear detector 92), output connects downstream signal analog attenuator 61 of downstream signal comparison amplifier 62.Described upward signal alc circuit 16 comprises upward signal analog attenuator 161 and upward signal comparison amplifier 162, the control end that input connects the feedback end of following upward signal sample circuit 190 (output of broadband great dynamic range linear detector 192), output connects upward signal analog attenuator 161 of upward signal comparison amplifier 162.
Described downstream signal sample circuit 90 comprises micro-band sawtooth pattern list directional coupler 91 and the broadband great dynamic range linear detector 92 of high directivity, the input of micro-band sawtooth pattern list directional coupler 91 is connected to the output of downlink power amplifier 8, output connects the input of the first isolator 10, and the coupled output of micro-band sawtooth pattern list directional coupler 91 is connected to the input of broadband great dynamic range linear detector 92, output (i.e. the feedback end of downstream signal sample circuit 90) point two-way of broadband great dynamic range linear detector 92, one road is connected to the input of downstream signal comparison amplifier 62, the built-in A/D converter of control unit 230 of separately leading up to is connected to the respective input of control unit 230.
Upward signal sample circuit 190 comprises micro-band sawtooth pattern list directional coupler 191 and the broadband great dynamic range linear detector 192 of high directivity, the input of micro-band sawtooth pattern list directional coupler 191 is connected to the output of ascending power amplifier 18, output connects the input of the second isolator 20, and the coupled output of micro-band sawtooth pattern list directional coupler 191 is connected to the input of broadband great dynamic range linear detector 192, output (i.e. the feedback end of upward signal sample circuit 190) point two-way of broadband great dynamic range linear detector 192, one road is connected to the input of upward signal comparison amplifier 162, the built-in A/D converter of control unit 230 of separately leading up to is connected to the respective input of control unit 230.
The corresponding output end of control unit 230 connects the corresponding control end of descending numerical-control attenuator 24, downstream signal frequency-selecting amplification module 7, downlink power amplifier 8, up numerical-control attenuator 25, upward signal frequency-selecting amplification module 17 and ascending power amplifier 18 respectively.
In the present invention, micro-band sawtooth pattern list directional coupler 91,191 of high directivity all have employed theoretical foundation and the computational methods of micro-band zigzag directional coupler that Tsing-Hua University proposes.Usual directed microstrip line directional coupler is because medium is heterogeneous, part is dielectric substrate, certain media is air, this will cause parity mode propagation phase velocity not, thus result in the problem of the directivity difference of microstrip directional coupler, in order to improve microstrip line directional coupler directivity, (Tsing-Hua University's [microstrip circuit] writes group to Tsing-Hua University's " microstrip circuit "; People's Telecon Publishing House 1976-9 publishes) propose zigzag directional coupler serrating for microstrip lines limit.The zigzag directional coupler degree of coupling of this optimization can between 10dB to 35dB, and practical operation and design error are no more than 0.5dB, and directivity can reach 20dB.
Realizing linear sampling that is broadband, great dynamic range is realize basis of the present invention, and in the present invention, the model that broadband great dynamic range linear detector 92,192 can adopt MAXIM company of the U.S. to produce is the linear detector of MAX4003.
By adopting above-mentioned micro-band sawtooth pattern list directional coupler 91,191 and broadband great dynamic range linear detector 92,192, in the present invention, uplink and downlink signal sampling circuit 90,190 completes the linear designing requirement of octave 45dB.
The present invention also comprises the descending gain manual adjustment circuit 21 of the control end being connected to downstream signal digital pad 5 and upward signal digital pad 15 and up gain manual adjustment circuit 22.
The present invention also comprises temperature, electric current, voltage detection module, and temperature, electric current, voltage detection module are connected to the detection input of control unit 230 by the A/D converter that control unit 230 is built-in.
Control unit 230 is built-in with trace routine and Intelligent treatment program, this trace routine comprises instant trace routine when timing trace routine and signal exceed pre-determined threshold, timing trace routine is preset with the time cycle of automatic start detection work, and instant trace routine is preset with the threshold value of repeater power output.By the timing trace routine of control unit 230 or/and whether the variable quantity that instant trace routine detects repeater power output is directly proportional with the variable quantity of gain, judge whether repeater exceeds linear working state thus, if exceed linear working state, the control command controlling uplink and downlink numerical-control attenuator 25,24 is then sent by the Intelligent treatment program of control unit 230, the effect of decay is produced, until repeater is adjusted linear operating state by uplink and downlink numerical-control attenuator 25,24 pairs of uplink and downlink links.
The workflow of repeater of the present invention is as follows:
Downstream signal through exterior aerial 1, first duplexer 2, descending low noise amplifier 3, downstream signal filter 4, downstream signal digital pad 5, downstream signal alc circuit 6, descending numerical-control attenuator 24, downstream signal frequency-selecting amplification module 7, downlink power amplifier 8, downstream signal sample circuit 90, first isolator 10, second duplexer 12 and domestic aerial 11, forms complete down link successively.Down link completes the whole link of base station to mobile terminal, and gives certain amplification to base station signal.Wherein, the signal that downlink power amplifier 8 exports is transported to the first isolator 10 by micro-band sawtooth pattern list directional coupler 91, simultaneously, the signal coupling that downlink power amplifier 8 exports by micro-band sawtooth pattern list directional coupler 91 is to broadband great dynamic range linear detector 92, and the output of broadband great dynamic range linear detector 92 is the feedback end of downstream signal sample circuit 90.
Upward signal through domestic aerial 11, second duplexer 12, up low noise amplifier 13, upward signal filter 14, upward signal digital pad 15, upward signal alc circuit 16, up numerical-control attenuator 25, upward signal frequency-selecting amplification module 17, ascending power amplifier 18, upward signal sample circuit 19, second isolator 20, first duplexer 2 and exterior aerial 1, forms complete up link successively.Up link completes the whole link of mobile terminal to base station, and gives certain amplification to the signal of mobile terminal.Wherein, the signal that ascending power amplifier 18 exports is transported to the second isolator 20 by micro-band sawtooth pattern list directional coupler 191, simultaneously, the signal coupling that ascending power amplifier 18 exports by micro-band sawtooth pattern list directional coupler 191 is to broadband great dynamic range linear detector 192, and the output of broadband great dynamic range linear detector 192 is the feedback end of upward signal sample circuit 190.
In the present invention, the control principle of control unit 230 is as follows:
When repeater is run, control unit 230 is upper by A/D converter monitoring repeater, the power output of down link (is drawn from upper, downstream signal sample circuit 90, 190), when timing trace routine or/and when the power output that instant trace routine detects exceeds the threshold value preset, the Intelligent treatment program of control unit 230 sends and controls uplink/downlink numerical-control attenuator 25, the control command of 24, on, descending numerical-control attenuator 25, on 24 pairs, downstream signal link produces the effect of decay, and the order that the Intelligent treatment program of control unit 230 sends is upper what originally arranged, descending numerical-control attenuator 25, the basis of 24 increases attenuation ldB in certain time interval, sends the trace routine run in control unit 230 when increasing adjustable attenuation order each time and all can detect continually, down output power, checks, whether the variable quantity of down output power is consistent with the attenuation of increase, when upper, the variable quantity and upper that down output power detects, descending numerical-control attenuator 25, when 24 attenuations increased are consistent, what can confirm now to detect is upper, down output power value is normal value, and that is repeater is working properly.When the attenuation of the uplink and downlink power output variable quantity detected and upper and lower numerical-control attenuator 25,24 is inconsistent, can judge that repeater is beyond linear operating region, also exists the phenomenon of gain compression.
When detecting that gain compression occurs in operating repeater, the Intelligent treatment program of control unit 230 can judge according to the compression depth detected that the way taking to reduce repeater gain makes it adjust to the state not producing gain compression.Specific as follows: if generation detected be mild compression time, then the way taking depth attenuation's mode to reduce repeater working gain makes it adjust to not occur the state compressed, and return back to linear work district; If what generation detected is when suppressing contracting, the whole communication system of interference that repeater equipment will be serious, then control power management module by control unit, the power supply of very brief closedown repeater power amplifier; Then under the control of Intelligent treatment program, increase the attenuation of numerical-control attenuator, restart power supply, check whether suppress contracting eliminates; If suppress contracting to eliminate, redistribution attenuation makes repeater enter normal operating state; If strong self-excitation also cannot be eliminated, just close the power supply of upper and lower signal link, provide alarm signal.
Whether employing software detection repeater provided by the invention is operated in the range of linearity, detects repeater and whether there is gain compression and carry out the method for Intelligent treatment.Become from passive process and initiatively solve.Ensure the work of repeater long-term stability.Impact when avoiding repeater equipment generation gain compression, system produced.Its beneficial effect following points: 1, Timeliness coverage gain compression phenomenon, avoid bringing negative effect to communication system.2, repeater equipment is protected; 3, personnel can be reduced and patrol and examine the cost increase brought; 4, engineering staff can be made to know the operation conditions of repeater at any time; Detect and processing method owing to adding gain compression in repeater equipment, small indoor repeater gain compression phenomenon is become by passively discover initiatively find and give process, bring the sense of security to client, guarantee the safe operation of network, meet the demand in market.
Claims (3)
1., with an indoor small repeater for automatic detecting amplifier linear condition and Intelligent treatment, it is characterized in that: comprise power module, down link, up link and control unit;
By power module be down link, up link and control unit provide working power;
Described down link comprises the exterior aerial, first duplexer, descending low noise amplifier, downstream signal filter, downstream signal digital pad, downstream signal alc circuit, descending numerical-control attenuator, downstream signal frequency-selecting amplification module, downlink power amplifier, downstream signal sample circuit, the first isolator, the second duplexer and the domestic aerial that are connected successively;
Described up link comprises the domestic aerial, the second duplexer, up low noise amplifier, upward signal filter, upward signal digital pad, upward signal alc circuit, up numerical-control attenuator, upward signal frequency-selecting amplification module, ascending power amplifier, upward signal sample circuit, the second isolator, first duplexer and the exterior aerial that are connected successively;
The feedback end of described upward signal sample circuit and described downstream signal sample circuit is connected to the respective input of described control unit respectively, and the corresponding output end of described control unit connects the corresponding control end of descending numerical-control attenuator, downstream signal frequency-selecting amplification module, downlink power amplifier, up numerical-control attenuator, upward signal frequency-selecting amplification module and ascending power amplifier respectively;
Described control unit is built-in with trace routine and Intelligent treatment program, whether the variable quantity being detected repeater power output by the trace routine of control unit is directly proportional with the variable quantity of gain, judge whether repeater exceeds linear working state thus, if exceed linear working state, the control command controlling uplink and downlink numerical-control attenuator is then sent by the Intelligent treatment program of control unit, by uplink and downlink numerical-control attenuator, uplink and downlink link is produced to the effect of decay, until repeater is adjusted linear operating state.
2. a kind of indoor small repeater with automatic detecting amplifier linear condition and Intelligent treatment according to claim 1, is characterized in that: above-mentioned trace routine comprises instant trace routine when timing trace routine and signal exceed pre-determined threshold.
3. a kind of indoor small repeater with automatic detecting amplifier linear condition and Intelligent treatment according to claim 1, is characterized in that: described upward signal sample circuit and downstream signal sample circuit include micro-band sawtooth pattern list directional coupler and the broadband great dynamic range linear detector of the high directivity be connected.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410738301.4A CN104579450A (en) | 2014-12-05 | 2014-12-05 | Small-sized indoor repeater with functions of automatically detecting linear state of amplifier and carrying out intelligent processing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410738301.4A CN104579450A (en) | 2014-12-05 | 2014-12-05 | Small-sized indoor repeater with functions of automatically detecting linear state of amplifier and carrying out intelligent processing |
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| CN104579450A true CN104579450A (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410738301.4A Pending CN104579450A (en) | 2014-12-05 | 2014-12-05 | Small-sized indoor repeater with functions of automatically detecting linear state of amplifier and carrying out intelligent processing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337654A (en) * | 2015-11-18 | 2016-02-17 | 成都赛康智能检测技术有限责任公司 | Wireless signal amplification device of surface acoustic wave temperature measuring system |
| CN112162302A (en) * | 2020-10-13 | 2021-01-01 | 西安中星伟业通信科技有限公司 | Beidou RNSS RDSS multi-frequency point intelligent control signal repeater |
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| CN1862265A (en) * | 2005-05-13 | 2006-11-15 | 大唐移动通信设备有限公司 | Apparatus and method for detecting linear index of power amplifier |
| CN200980074Y (en) * | 2006-12-15 | 2007-11-21 | 深圳国人通信有限公司 | An intelligent repeater with di-directional frequency selection applied to the third generation mobile communication |
| CN101159497A (en) * | 2007-11-16 | 2008-04-09 | 深圳国人通信有限公司 | Self-excitation detection and process method for repeater |
| CN203661061U (en) * | 2013-11-14 | 2014-06-18 | 泉州市琪祥电子科技有限公司 | Mobile communication small repeater with antenna port standing wave warning |
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Patent Citations (5)
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| KR20040017166A (en) * | 2002-08-20 | 2004-02-26 | 알에프코어 주식회사 | Rf linear power amplifier |
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| CN200980074Y (en) * | 2006-12-15 | 2007-11-21 | 深圳国人通信有限公司 | An intelligent repeater with di-directional frequency selection applied to the third generation mobile communication |
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| CN105337654A (en) * | 2015-11-18 | 2016-02-17 | 成都赛康智能检测技术有限责任公司 | Wireless signal amplification device of surface acoustic wave temperature measuring system |
| CN112162302A (en) * | 2020-10-13 | 2021-01-01 | 西安中星伟业通信科技有限公司 | Beidou RNSS RDSS multi-frequency point intelligent control signal repeater |
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Application publication date: 20150429 |