CN202759450U - Lte repeater - Google Patents
Lte repeater Download PDFInfo
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- CN202759450U CN202759450U CN 201220370747 CN201220370747U CN202759450U CN 202759450 U CN202759450 U CN 202759450U CN 201220370747 CN201220370747 CN 201220370747 CN 201220370747 U CN201220370747 U CN 201220370747U CN 202759450 U CN202759450 U CN 202759450U
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- lte
- repeater
- duplexer
- frequency
- frequency selective
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Abstract
The utility model discloses a LTE (Long Term Evolution) repeater, comprising a downlink frequency selective device in serial connection between an emission port of a donor end diplexer and a receiving port of a user end diplexer; an uplink frequency selective device in serial connection between an emission port of the user end diplexer and a receiving port of the donor end diplexer; and an intelligent supervising device respectively in connection with the donor end diplexer, the user end diplexer, the downlink frequency selective device and the uplink frequency selective device. The LTE repeater employs a same frequency transmission mode according to standards of a 3GPP correlative repeater; a mobile terminal uplink LTE signal is received and amplified and emitted to a base station through antennas; meanwhile a base station downlink LTE signal is received and amplified and covers a target area through antennas to meet requirements of good receiving of a mobile LTE signal; technical performance and quality can meet relative requirements of network access indexes; in addition the LTE repeater possesses the advantages of small investment, convenient installation, reliable performance, etc.
Description
Technical field
The utility model relates to Mobile communication direct base station equipment, particularly relates to a kind of LTE(Long Term Evolution, Long Term Evolution) repeater.
Background technology
Development along with mobile Internet, mobile communication is growing to the demand of data business, by the trend that develops at present, 3G enhancement mode HSPA(High Speed Uplink Packet Access, high speed uplink downlink packet access technology) data transfer rate must satisfy new wireless data service demand in the near future.Be the challenge meet growing wireless traffic to increase, 3GPP(The 3rd Generation Partnership Project, third generation partner program) the LTE project proposed.
Mobile communication technology development is maked rapid progress, short decades just experienced first generation mobile communication, Generation Mobile Telecommunication System, 3G (Third Generation) Moblie, and the 3.9G mobile communication that plays an active part at global operator at present is LTE.Wherein, first generation mobile communication mainly adopts FDMA(Frequency Division Multiple Access, analogue technique and frequency division multiple access) technology, major defect is that speech quality is not high, confidentiality is poor, data service can not be provided; Generation Mobile Telecommunication System (2G) has adopted TDMA(Time Division Multiple Access, digital technology and time division multiple access) technology, it has improved the confidentiality of communication greatly, speech quality also significantly improves, and data service can be provided, but it can only satisfy lower data rate request; The CDMA(Code Division Multiple Access of 3G (Third Generation) Moblie (3G), adopted code division multiple access) technology, compare 2G, 3G has higher spectrum efficiency, data transfer rate up to 2Mbps can be provided, 3G enhancement mode HSPA can provide the data transfer rate up to 14.2Mbps, but along with the development of mobile Internet and smart mobile phone, the data transfer rate of 3G still can't satisfy growing data rate request; 3.9G being LTE, mobile communication adopted OFDM(Orthogonal Frequency Division Multiplexing, OFDM) technology and MIMO(Multiple-Input Multiple-Out-put, multiple-input and multiple-output) technology, it has improved spectrum efficiency greatly, and the high energy of downlink data rate reaches 100Mbps.
The full name of LTE is Long Term Evolution(Long Term Evolution), it is the technology evolution of 2G and 3G technology among the 3GPP, and at present, the LTE network of the existing many operators in the whole world is disposed, and this has proposed requirement to LTE network coverage equipment.Because cost is low, be convenient to install, can be used for mending blind and extend the advantage such as coverings, the repeater is widely used in 2G and the 3G network, and is same, and the repeater also can be under some scene of LTE.
But 2G repeater accepted standard is " ETSI EN300609 " etc., and standards such as " 3GPPTS25.143 " is adopted in the 3G repeater, and standards such as " 3GPP TS36.143 " is adopted in the LTE repeater.Because implementation criteria is difference to some extent, the repeater in existing 2G or the 3G network can not be transitioned into the LTE technology smoothly, has hindered the LTE system to bring into play due advantage.
The utility model content
Based on this, be necessary for the problems referred to above, a kind of LTE repeater is provided, can realize the level and smooth expansion of 3G and LTE, can realize better the advantage of repeater in the LTE system.
A kind of LTE repeater comprises:
Be connected on the down frequency selection device between the receiving port that the alms giver holds the emission port of duplexer and user side duplexer; Be connected on the up frequency selective device between the emission port of user side duplexer and the receiving port that the alms giver holds duplexer; The intelligence monitoring and controlling device of holding duplexer, described user side duplexer, described down frequency selection device, described up frequency selective device to link to each other respectively with described alms giver.
Above-mentioned LTE repeater, design employing with the frequency pass-through mode according to relevant repeater standard among the 3GPP, with the up LTE signal of portable terminal receive amplify after by antenna transmission to the base station, simultaneously base station down LTE signal is received and amplify the rear antenna cover target area of passing through, to satisfy the good requirement that receives of mobile LTE signal, its technical performance can satisfy relevant networking index request with quality, has the advantages such as small investment, easy for installation, dependable performance.
Among embodiment, described down frequency selection device and/or described up frequency selective device mainly comprise having the Surface Acoustic Wave Filter of the squareness factor of the inhibition more than the 20dB at 20MHz band edge 200kHz place therein.
Implement present embodiment, adopted the Surface Acoustic Wave Filter of high squareness factor, this Surface Acoustic Wave Filter sideband suppression is high.Bandwidth is wider; the inhibition degree is higher; the cost of Surface Acoustic Wave Filter is higher; for reducing cost; and have the characteristics of protection bandwidth in conjunction with the signal of LTE, and the suppressing bandwidth of Surface Acoustic Wave Filter is suitably reduced, satisfying in the spuious situation of system simultaneously; system gain is suitably reduced, to improve the easy degree of realization of SAW (Surface Acoustic Wave) filter.
Among embodiment, described down frequency selection device and/or described up frequency selective device comprise that also frequency accuracy is less than the crystal vibrator of 0.01ppm therein.
Implement present embodiment, select the high stability crystal vibrator to provide frequency reference for described down frequency selection device and/or described up frequency selective device.
Among embodiment, described down frequency selection device and/or described up frequency selective device also comprise, with the voltage controlled oscillator of phase-locked loop therein.
Implement present embodiment, use high performance voltage controlled oscillator with phase-locked loop, reduce the system phase noise, reduce direct discharging station to the impact of OFDM inter-carrier interference, can satisfy like this 3GPP to the high requirement of LTE repeater frequency stability
Description of drawings
Fig. 1 is the schematic diagram of the utility model LTE repeater;
Fig. 2 is the embodiment schematic diagram of the utility model LTE repeater.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is the schematic diagram of the utility model LTE repeater, comprising:
Be connected on the down frequency selection device between the receiving port that the alms giver holds the emission port of duplexer and user side duplexer;
Be connected on the up frequency selective device between the emission port of user side duplexer and the receiving port that the alms giver holds duplexer;
The intelligence monitoring and controlling device of holding duplexer, described user side duplexer, described down frequency selection device, described up frequency selective device to link to each other respectively with described alms giver.
A kind of LTE repeater is comprised of downlink radio frequency link and up radio frequency link, described downlink radio frequency link comprises that being connected on DT holds (donor terminal, the donor antenna port) alms giver holds the emission port of duplexer and the down frequency selection device between MT end (mobile terminal, user antenna port) user side duplexer.Described up radio frequency link comprises that the alms giver of the user side duplexer that is connected on MT end and DT end holds the up frequency selective device between the duplexer.Described alms giver holds duplexer, described user side duplexer, described down frequency selection device, described up frequency selective device etc. to link to each other with the monitor-interface of intelligence monitoring and controlling device respectively at the monitor-interface of each interior active module embedded therein, intelligence monitoring and controlling device can be monitored the operating state of each module, and the operation irregularity of each module is carried out alarm and in time processing.
Action principle of the present utility model is: at the downlink radio frequency link, the LTE downstream signal of launching from the base station by the antenna wireless coupling enters the DT port, enter after the alms giver holds duplexer through the DT port, hold duplexer that the signal of downlink working frequency range is chosen through the alms giver, suppress simultaneously other irrelevant signals, hold the LNA in the duplexer that the signal of downlink working frequency range is carried out low noise amplification through the alms giver again, the signal of downlink working frequency range holds the LNA in the duplexer to amplify TX end (transmitting terminal) output of being held afterwards duplexer by the alms giver through the alms giver, then enter the down frequency selection device, the down frequency selection device carries out frequency to the signal of the downlink working frequency range that enters and selects, the downstream signal of needs is chosen, and other signals and some spurious signals of inhibition downlink working frequency range, the user side duplexer of input MT end, the user side duplexer is delivered to the MT port with descending LTE signal, and suppress simultaneously signal outside the descending LTE signal working frequency range, be used for covering respective operator planning area by the output of MT port at last, wherein the standing wave in the user side duplexer detects and can hold the standing wave of load to detect to the MT of system, this function can find in time whether the load of the MT of system end is unusual, as unusually through intelligence monitoring and controlling device this being carried out alarm unusually.At up radio frequency link, LTE upward signal by antenna wireless couple movement terminal enters the MT port, choose through the signal of user side duplexer with up working frequency range, suppress simultaneously other irrelevant signals, LNA in the user side duplexer is carried out low noise amplification to the signal of up working frequency range again, after amplifying, the LNA of the signal of up working frequency range in the user side duplexer exported by the RX end (receiving terminal) of user side duplexer, then enter up frequency selective device, up frequency selective device carries out frequency to the signal of the up working frequency range that enters and selects, the upward signal of needs is chosen, and suppress up working frequency range outer other signals and some spurious signals, input DT end alms giver holds duplexer, the alms giver holds duplexer that up LTE signal is delivered to the MT port, and suppress simultaneously signal outside the up LTE signal working frequency range, exported by the DT port at last.All active module embedded thereins carry out data acquisition and control by monitoring module to it all with monitor-interface.
The utility model designs according to relevant repeater standard among the 3GPP and adopts with the frequency pass-through mode, with the up LTE signal of portable terminal receive amplify after by antenna transmission to the base station, simultaneously base station down LTE signal is received and amplify the rear antenna cover target area of passing through, to satisfy the good requirement that receives of mobile LTE signal, its technical performance can satisfy relevant networking index request with quality, has the advantages such as small investment, easy for installation, dependable performance.
Among embodiment, described down frequency selection device and/or described up frequency selective device mainly comprise having the Surface Acoustic Wave Filter of the squareness factor of the inhibition more than the 20dB at 20MHz band edge 200kHz place therein.
Implement present embodiment, adopted the Surface Acoustic Wave Filter of high squareness factor, this Surface Acoustic Wave Filter sideband suppression is high.Bandwidth is wider; the inhibition degree is higher; the cost of Surface Acoustic Wave Filter is higher; for reducing cost; and have the characteristics of protection bandwidth in conjunction with the signal of LTE, and the suppressing bandwidth of Surface Acoustic Wave Filter is suitably reduced, satisfying in the spuious situation of system simultaneously; system gain is suitably reduced, to improve the easy degree of realization of SAW (Surface Acoustic Wave) filter.
Among embodiment, described down frequency selection device and/or described up frequency selective device comprise that also frequency accuracy is less than the crystal vibrator of 0.01ppm therein.
Implement present embodiment, select the high stability crystal vibrator to provide frequency reference for described down frequency selection device and/or described up frequency selective device.
Among embodiment, described down frequency selection device and/or described up frequency selective device also comprise, with the voltage controlled oscillator of phase-locked loop therein.
Implement present embodiment, use high performance voltage controlled oscillator with phase-locked loop, reduce the system phase noise, reduce direct discharging station to the impact of OFDM inter-carrier interference, can satisfy like this 3GPP to the high requirement of LTE repeater frequency stability
Fig. 2 is the embodiment schematic diagram of the utility model LTE repeater.
LTE repeater as shown in Figure 2 also comprises: be connected to the descending amplifirer between described user side duplexer and the described down frequency selection device.LTE repeater as shown in Figure 2 also comprises: be connected to described alms giver and hold up amplifirer between duplexer and the described up frequency selective device.
Be illustrated in figure 2 as embodiment system configuration schematic diagram of the present utility model, it comprises Switching Power Supply, intelligence monitoring and controlling device, radio modem (wireless modem), downlink radio frequency link and up radio frequency link.Wherein, described downlink radio frequency chain route is connected on the emission port of DT end duplexer and down frequency selection device and the descending amplifirer formation between the MT end duplexer.Described up radio frequency link is made of the up frequency selective device and the up amplifirer that are connected between MT end duplexer and the DT end duplexer.DT end integrated module (comprise the alms giver and hold duplexer), down frequency selection device, descending amplifirer, MT end integrated module (comprising the user side duplexer), up frequency selective device and up amplifirer etc. link to each other with the monitor-interface of intelligence monitoring and controlling device respectively at the monitor-interface of each interior active module embedded therein.
LTE repeater as shown in Figure 2 also comprises: the Switching Power Supply that links to each other with described intelligence monitoring and controlling device.Switching Power Supply provides power supply for other modules.
At the downlink radio frequency link, the downstream signal of launching from the base station by the antenna wireless coupling enters the DT port, through being exported by the TX end behind the DT end duplexer, then enter descending amplifirer through the down frequency selection device, amplify rear input MT end duplexer by the linearity of descending amplifirer, be used for covering respective operator planning area by the output of MT port at last.At up radio frequency link, upward signal by antenna wireless couple movement terminal enters the MT port, by the output of RX port, then enters up amplifirer through up frequency selective device through MT end duplexer, input again DT end duplexer, exported by the DT port of DT end duplexer at last.All active module embedded thereins carry out data acquisition and control by intelligence monitoring and controlling device to it all with monitor-interface, judge by the data that gather whether active module embedded therein work is unusual, as unusually.
LTE repeater as shown in Figure 2 also comprises: the radio modem (wireless modem) that links to each other with described intelligence monitoring and controlling device.Intelligence monitoring and controlling device can be by wireless modem to carrying out alarm and reporting OMC(Operations ﹠amp unusually; Maintenance Center, operation maintenance center), in time process (such as the power amplifier alarm, will close processing to power amplifier module), final this locality and the remote monitoring that realizes equipment and to some alarm.
System performance index of the present utility model can satisfy the relevant repeater of 3GPP standard.
Because the signal bandwidth of LTE has 6 kinds of adaptive-bandwidths such as 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz and 20MHz, and the outer gain of band that its every kind bandwidth departs from sideband 200kHz all need be satisfied less than 60dB, therefore the utility model has adopted the Surface Acoustic Wave Filter of high squareness factor, and this Surface Acoustic Wave Filter sideband suppression is high.Bandwidth is wider; the inhibition degree is higher; the cost of Surface Acoustic Wave Filter is higher; for reducing cost; and have the characteristics of protection bandwidth in conjunction with the signal of LTE, and the suppressing bandwidth of Surface Acoustic Wave Filter is suitably reduced, satisfying in the spuious situation of system simultaneously; system gain is suitably reduced, to improve the easy degree of realization of SAW (Surface Acoustic Wave) filter.
Described up amplifirer also comprises the power tube that can better satisfy single carrier frequency frequency division multiple access (SC-FDMA) performance.
Because the high peak-to-average force ratio of OFDM can reduce the efficient of power amplifier, increase cost and the power consumption of power amplifier, be unfavorable for up radio frequency link realization, so up SC-FDMA that adopted of LTE, SC-FDMA has the characteristic of OFDM, peak-to-average force ratio is also less than OFDM, and for these characteristics, the utility model has adopted the power tube of suitable SC-FDMA to be used for the end of up power amplifier module.
The input of described descending amplifirer also comprises simulated pre-distortion circuit.
Because the descending OFDM that adopted of LTE is as one of its key technology, OFDM has the advantages such as spectrum efficiency height, bandwidth expansion are good, anti-multipath fading, and OFDM has the weak points such as peak-to-average force ratio height, frequency error sensitivity simultaneously.And the high peak-to-average force ratio of OFDM has proposed higher challenge to the descending power amplifier module linearization problem of LTE repeater, the utility model has adopted the method for predistortion to solve this problem, the analog predistortion linear technology is applied on the power amplifier, having added predistortion circuit at the front end of power amplifier module processes signal, nonlinear distortion with the compensation power amplifier, greatly improve the linearisation degree of power amplifier, also improved simultaneously the indexs such as the spurious emissions index of power amplifier module and ACLR.
The above embodiment has only expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (10)
1. a LTE repeater is characterized in that, comprising:
Be connected on the down frequency selection device between the receiving port that the alms giver holds the emission port of duplexer and user side duplexer;
Be connected on the up frequency selective device between the emission port of user side duplexer and the receiving port that the alms giver holds duplexer;
The intelligence monitoring and controlling device of holding duplexer, described user side duplexer, described down frequency selection device, described up frequency selective device to link to each other respectively with described alms giver.
2. LTE according to claim 1 repeater is characterized in that:
Described down frequency selection device and/or described up frequency selective device mainly comprise having the Surface Acoustic Wave Filter of the squareness factor of the inhibition more than the 20dB at 20MHz band edge 200kHz place.
3. LTE according to claim 2 repeater is characterized in that:
Described down frequency selection device and/or described up frequency selective device comprise that also frequency accuracy is less than the crystal vibrator of 0.01ppm.
4. LTE according to claim 3 repeater is characterized in that:
Described down frequency selection device and/or described up frequency selective device also comprise, with the voltage controlled oscillator of phase-locked loop.
5. according to claim 1 to 4 each described LTE repeaters, it is characterized in that, also comprise:
Be connected to the descending amplifirer between described user side duplexer and the described down frequency selection device.
6. LTE according to claim 5 repeater is characterized in that:
The input of described descending amplifirer also comprises simulated pre-distortion circuit.
7. according to claim 1 to 4 each described LTE repeaters, it is characterized in that, also comprise:
Be connected to described alms giver and hold up amplifirer between duplexer and the described up frequency selective device.
8. LTE according to claim 7 repeater is characterized in that:
Described up amplifirer also comprises the power tube that is fit to single carrier frequency frequency division multiple access.
9. according to claim 1 to 4 each described LTE repeaters, it is characterized in that, also comprise:
The Switching Power Supply that links to each other with described intelligence monitoring and controlling device.
10. according to claim 1 to 4 each described LTE repeaters, it is characterized in that, also comprise: the radio modem that links to each other with described intelligence monitoring and controlling device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220370747 CN202759450U (en) | 2012-07-27 | 2012-07-27 | Lte repeater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220370747 CN202759450U (en) | 2012-07-27 | 2012-07-27 | Lte repeater |
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| CN202759450U true CN202759450U (en) | 2013-02-27 |
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| CN 201220370747 Expired - Lifetime CN202759450U (en) | 2012-07-27 | 2012-07-27 | Lte repeater |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI613894B (en) * | 2016-05-26 | 2018-02-01 | 臺灣可億隆股份有限公司 | Signal-repeating device with an extended control area and signal-repeating method thereof |
| CN113259022A (en) * | 2021-05-17 | 2021-08-13 | 深圳英智源智能系统有限公司 | Receiving and sending sharing monitoring method, unit, system and storage medium |
-
2012
- 2012-07-27 CN CN 201220370747 patent/CN202759450U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI613894B (en) * | 2016-05-26 | 2018-02-01 | 臺灣可億隆股份有限公司 | Signal-repeating device with an extended control area and signal-repeating method thereof |
| US10277302B2 (en) | 2016-05-26 | 2019-04-30 | Coiler Corporation | Signal-repeating device for extending a control area and signal-repeating method thereof |
| CN113259022A (en) * | 2021-05-17 | 2021-08-13 | 深圳英智源智能系统有限公司 | Receiving and sending sharing monitoring method, unit, system and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180214 Address after: 510663 Shenzhou Road, Guangzhou Science City, Guangzhou economic and Technological Development Zone, Guangdong, 10 Co-patentee after: COMBA TELECOM SYSTEMS (GUANGZHOU) Ltd. Patentee after: COMBA TELECOM SYSTEMS (CHINA) Ltd. Co-patentee after: COMBA TELECOM TECHNOLOGY (GUANGZHOU) Ltd. Co-patentee after: TIANJIN COMBA TELECOM SYSTEMS Ltd. Address before: 510663 Jin Bi Road, Guangzhou Economic Development Zone, Guangzhou, Guangdong Province, No. 6 Patentee before: COMBA TELECOM SYSTEMS (GUANGZHOU) Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200115 Address after: 510663 Shenzhou Road 10, Guangzhou Science City, Guangzhou economic and Technological Development Zone, Guangzhou, Guangdong Patentee after: COMBA TELECOM SYSTEMS (CHINA) Ltd. Address before: 510663 Shenzhou Road, Guangzhou Science City, Guangzhou economic and Technological Development Zone, Guangdong, 10 Co-patentee before: COMBA TELECOM SYSTEMS (GUANGZHOU) Ltd. Patentee before: COMBA TELECOM SYSTEMS (CHINA) Ltd. Co-patentee before: COMBA TELECOM TECHNOLOGY (GUANGZHOU) Ltd. Co-patentee before: TIANJIN COMBA TELECOM SYSTEMS Ltd. |
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| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130227 |
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| CX01 | Expiry of patent term |