CN205179054U - Compatible TDD of full bandwidth of multimode and FDD's two -way enlarged wireless repeater system - Google Patents
Compatible TDD of full bandwidth of multimode and FDD's two -way enlarged wireless repeater system Download PDFInfo
- Publication number
- CN205179054U CN205179054U CN201520650682.0U CN201520650682U CN205179054U CN 205179054 U CN205179054 U CN 205179054U CN 201520650682 U CN201520650682 U CN 201520650682U CN 205179054 U CN205179054 U CN 205179054U
- Authority
- CN
- China
- Prior art keywords
- signal
- fdd
- antenna
- tdd
- full bandwidth
- 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.)
- Active
Links
Landscapes
- Radio Relay Systems (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The utility model provides a compatible TDD of full bandwidth of multimode and FDD's two -way enlarged wireless repeater system comprises donor antenna, cavity combiner POI, local terminal AU, remote termination RU and retransmission antenna, during down link, received the base station coverage signal as donor antenna, through POI signal transmission to local terminal AU module, the signal is behind band -pass filter amplifier, and the down coversion becomes intermediate frequency signal and gets into adc ADC, carry on that data signal handles and become intermediate frequency signal by digital analog converter DAC at the numeric field, then the up -conversion be donor antenna 1 by a retransmission sky line emission signal, same, up link received the signal through up link filter amplifier by the retransmission antenna, and the down coversion becomes intermediate frequency signal and gets into adc ADC, carry on that data signal handles and become intermediate frequency signal by digital analog converter DAC at the numeric field, then the up -conversion be radiofrequency signal by donor antenna passback signal for the basic station. The utility model discloses profitable effect: this system can solve complicated indoor cover blind area and conversation difficulty.
Description
Technical field
The utility model relates to mobile communications network in-door covering field, and more specifically, it relates to the Bi-directional amplifier radio repeater system of compatible TDD and FDD of a kind of multimode full bandwidth.
Background technology
Along with the develop rapidly of China's radio communication, the sharp increase of mobile communication subscriber quantity, to such an extent as to cellular plans is more and more less, base station location is more and more lower; Simultaneously under the landform and environment of the complexity such as modern architecture, large-scale office building, elevator apartment, market, basement, the network of the multiple types such as 2G/3G/4G all needs to carry out in-door covering simultaneously, this brings very large puzzlement to network planning network optimization, also often has coverage hole and conversation difficulties problem in reality scene application.
Repeater is that a kind of covering for base station BTS in supplementary mobile network is not enough, expand base station effective coverage range, fill the extremely effective equipment of coverage hole, and its cost is higher compared to cost performance base station construction, installing more convenient, not needing excessively to drop into more base station to expand the coverage area.But in most of landform and environment, owing to lacking fiber resource, so need the introducing of wireless discharging-directly station.Wireless discharging-directly station receives aerial base station signal by antenna, after being amplified by signal, is sent to the region wishing to cover; Receive the signal that this district's travelling carriage sends simultaneously, after amplifying, send back to base station, thus realize the flexible extension of overlay area, ensure the equilibrium of whole system telephone traffic.And carry out the stable of ensuring coverage region area size and signal by the angle of pitch adjustment of gain control and retransmitting antenna, prevent the interference to other community.
Utility model content
The purpose of this utility model overcomes deficiency of the prior art, and provide the Bi-directional amplifier radio repeater system of compatible TDD and FDD of a kind of multimode full bandwidth, and it is applicable to the digital hardware DAS system of compatible TDD and FDD of 700 ~ 2700MHz full bandwidth multimode.
The purpose of this utility model is achieved through the following technical solutions.The Bi-directional amplifier radio repeater system of compatible TDD and FDD of this multimode full bandwidth, near-end machine AU and remote termination RU inserted by bag, by Optical Fiber Transmission between terminal AU and remote termination RU, support the replaceable application supporting compatible TDD and FDD of multimode full bandwidth 700-2700MHz of maximum 4 modules; In the downlink, system is by donor antenna pickoff signals in existing overlay area, by system band bandpass filter, fabulous isolation is carried out to the logical outer signal of band, and filtered inband signaling is transmitted into region to be covered by antenna directivity after power amplifier amplifies; In the uplink, the mobile terminal signal in overlay area is transmitted into corresponding base station with same working method by after up amplification link processing, thus reaches Bi-directional amplifier.
Described multimode full bandwidth compatible TDD and FDD Bi-directional amplifier radio repeater system, is made up of donor antenna, cavity combiner POI, near-end machine AU, remote termination RU and retransmitting antenna; During down link, when donor antenna receives base station coverage signal, through POI Signal transmissions to near-end machine AU module, signal is after bandpass filtering amplifies, be downconverted into intermediate-freuqncy signal and enter analog to digital converter ADC, carry out Digital Signal Processing at numeric field and become intermediate-freuqncy signal by digital to analog converter DAC, then up-converting to radiofrequency signal and transmitted by retransmitting antenna; Same, up link receives signal through up link filter and amplification by retransmitting antenna, be downconverted into intermediate-freuqncy signal and enter analog to digital converter ADC, carry out Digital Signal Processing at numeric field and become intermediate-freuqncy signal by digital to analog converter DAC, then up-converting to radiofrequency signal by donor antenna return path signal to base station.
Described system possesses remote software download function, and does OMT parameter monitoring, and compared to building base station again, native system cost is lower, and project installation is more convenient.
Described system supports multimode, can support that 700-2700MHz full bandwidth is applied.
Described system can support the various network formats of TDD and FDD, comprises GSM, CDMA, WCDMA, TD-SCDMA, LTE-TDD and LTE-FDD etc.
The effect that the utility model is useful: native system can solve complicated in-door covering blind area and conversation difficulties, and less compared to building base station cost again, installs more convenient, need not too much drop into base station and waste.
Accompanying drawing explanation
Fig. 1 is typical scene application block diagram of the present utility model;
Fig. 2 is the block diagram of system of the present utility model;
Fig. 3 is system principle diagram of the present utility model;
Fig. 4 is system digits partial schematic block diagram of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described further.
Typical scene application of the present utility model as shown in Figure 1, is made up of the Bi-directional amplifier radio repeater system of compatible TDD and FDD of full frequency band 700-2700MHz multimode near-end machine AU, remote termination RU, POI, donor antenna and retransmitting antenna.Wherein, donor antenna points to base station, and from receiving base station signal in the air, this signal exports to corresponding radio-frequency module on near-end machine AU after POI filtering, because the signal that donor antenna receives comprises the useful signal in frequency range and the unwanted signal outside frequency range, so just need system to carry out the filtering of high-isolation to unwanted signal, filter on POI and near-end machine AU radio-frequency module well inhibits the outer unwanted signal of band, extract useful signal in band and enter proximal plate, the digital signal of proximal plate by Optical Fiber Transmission to distal plate, after being amplified by power amplifier, signal covers through retransmitting antenna transmitting, the down link of system that Here it is, same, when up link, retransmitting antenna receives terminal signaling and enter distal plate after low noise amplification, and by signal transmission through fiber to near-end machine AU, after power amplifier amplifies, signal return is to base station.System solution well solves the problems such as blind area, base station quorum sensing inhibitor and call drop, and the coaxial-cable feeder of conventional wireless repeater is saved by this mode, decrease the loss of system, thus reduce the power output of system but do not affect covering effect of signals, can solve again the high-isolation puzzlement of original puzzlement wireless discharging-directly station, to design and the performance reducing requirements of equipment, finally save cost, and be convenient to again install in reality scene.
The block diagram of system of the present utility model as shown in Figure 2, forms primarily of near-end machine AU and remote termination RU, passes through Optical Fiber Transmission between the two.Wherein near-end machine AU and remote termination RU is made up of digiboard and power amplifier module, equipment can support 4 rf boards (power amplifier LNA module) simultaneously, radio-frequency module can be changed flexibly, meets the system requirements of compatible TDD and FDD of multimode full bandwidth in this way.
System principle diagram of the present utility model as shown in Figure 3, the base station signal received by donor antenna, because spacing wave is impure, the RF signal in passband is extracted through system band bandpass filter, this signal becomes intermediate-freuqncy signal through analog down and enters digital module and carry out digital domain signal process, is up-converted into RF signal afterwards covers signal through retransmitting antenna through simulation.
Digital module theory diagram of the present utility model as shown in Figure 4, intermediate-freuqncy signal after down-conversion, be introduced into ADC analog-to-digital conversion module and become digital signal, this signal enters DDC module to carry out Digital Down Convert and becomes baseband signal, then numeric field is to this signal DSP process, comprises modulation /demodulation, anti-interference weak, FEC, framing control etc., treated baseband signal enters DUC module and carries out Digital Up Convert and become digital signal, then becomes intermediate-freuqncy signal through DAC digital-to-analogue conversion.
The utility model is applicable to the digital hardware DAS system of compatible TDD and FDD of 700 ~ 2700MHz full bandwidth multimode, Optical Fiber Transmission is passed through between near-end machine AU and remote termination RU, decrease the use of engineering standard coaxial cable, the benefit brought is exactly that the power output of equipment reduces because engineering loss is few, after power reduction simultaneously, space cross talk effects between donor antenna and retransmitting antenna is also little, the isolation of equipment also easily meets crosstalk requirements, such system is just not easy circulation self-excitation, can steady operation.Lack in the scene of fiber resource a lot, conventional digital optical fiber repeater is also inapplicable, can only cover signal with wireless discharging-directly station.And native system only needs can meet application according to the radio-frequency module in the resource of frequency range in existing network flexibly selection equipment, without the type that overlapping development is different, more can fast responding market.4 radio-frequency module structural members of equipment are unified, and the pcb board in module has done compatible design can support 700-2700MHz, and the frequency device encapsulation of different frequency range have also been made unification, and achieving module can replace arbitrarily.
The above, be only the good execution mode of the utility model, do not form the restriction to the utility model protection range.Any do within the utility model spirit amendment, equivalent to replace and improvement etc., all should be included within claims of the present utility model.
Claims (3)
1. a Bi-directional amplifier radio repeater system of compatible TDD and FDD of multimode full bandwidth, is characterized in that: be made up of donor antenna, cavity combiner POI, near-end machine AU, remote termination RU and retransmitting antenna; During down link, when donor antenna receives base station coverage signal, through POI Signal transmissions to near-end machine AU module, signal is after bandpass filtering amplifies, be downconverted into intermediate-freuqncy signal and enter analog to digital converter ADC, carry out Digital Signal Processing at numeric field and become intermediate-freuqncy signal by digital to analog converter DAC, then up-converting to radiofrequency signal and transmitted by retransmitting antenna; Same, up link receives signal through up link filter and amplification by retransmitting antenna, be downconverted into intermediate-freuqncy signal and enter analog to digital converter ADC, carry out Digital Signal Processing at numeric field and become intermediate-freuqncy signal by digital to analog converter DAC, then up-converting to radiofrequency signal by donor antenna return path signal to base station.
2. the Bi-directional amplifier radio repeater system of compatible TDD and FDD of multimode full bandwidth according to claim 1, is characterized in that: described system possesses remote software download function, and does OMT parameter monitoring.
3. the Bi-directional amplifier radio repeater system of compatible TDD and FDD of multimode full bandwidth according to claim 1, it is characterized in that: described system can support the various network formats of TDD and FDD, comprises GSM, CDMA, WCDMA, TD-SCDMA, LTE-TDD and LTE-FDD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520650682.0U CN205179054U (en) | 2015-08-26 | 2015-08-26 | Compatible TDD of full bandwidth of multimode and FDD's two -way enlarged wireless repeater system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520650682.0U CN205179054U (en) | 2015-08-26 | 2015-08-26 | Compatible TDD of full bandwidth of multimode and FDD's two -way enlarged wireless repeater system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205179054U true CN205179054U (en) | 2016-04-20 |
Family
ID=55742981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520650682.0U Active CN205179054U (en) | 2015-08-26 | 2015-08-26 | Compatible TDD of full bandwidth of multimode and FDD's two -way enlarged wireless repeater system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205179054U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106998225A (en) * | 2017-05-04 | 2017-08-01 | 陕西天基通信科技有限责任公司 | The active feeder gain compensation node of wideband and the active feeder compartment system of wideband |
| CN107786256A (en) * | 2017-11-23 | 2018-03-09 | 深圳国人通信股份有限公司 | Telecommunications bimodulus indoor coverage equipment |
| CN113746522A (en) * | 2021-07-21 | 2021-12-03 | 北京赫微科技有限公司 | 5G repeater signal processing method |
| CN114205924A (en) * | 2022-01-27 | 2022-03-18 | 福建省邮电规划设计院有限公司 | 5G routing base station, 5G micro base station and 5G communication network system |
| CN114978272A (en) * | 2022-04-29 | 2022-08-30 | 深圳市可信华成通信科技有限公司 | Multi-band digital repeater |
-
2015
- 2015-08-26 CN CN201520650682.0U patent/CN205179054U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106998225A (en) * | 2017-05-04 | 2017-08-01 | 陕西天基通信科技有限责任公司 | The active feeder gain compensation node of wideband and the active feeder compartment system of wideband |
| CN106998225B (en) * | 2017-05-04 | 2023-09-19 | 陕西天基通信科技有限责任公司 | Broadband active feed cable gain compensation node and broadband active feed cable distribution system |
| CN107786256A (en) * | 2017-11-23 | 2018-03-09 | 深圳国人通信股份有限公司 | Telecommunications bimodulus indoor coverage equipment |
| CN113746522A (en) * | 2021-07-21 | 2021-12-03 | 北京赫微科技有限公司 | 5G repeater signal processing method |
| CN113746522B (en) * | 2021-07-21 | 2022-10-04 | 北京赫微科技有限公司 | 5G repeater signal processing method |
| CN114205924A (en) * | 2022-01-27 | 2022-03-18 | 福建省邮电规划设计院有限公司 | 5G routing base station, 5G micro base station and 5G communication network system |
| CN114978272A (en) * | 2022-04-29 | 2022-08-30 | 深圳市可信华成通信科技有限公司 | Multi-band digital repeater |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205179054U (en) | Compatible TDD of full bandwidth of multimode and FDD's two -way enlarged wireless repeater system | |
| CN103379674B (en) | A kind of multimode numeral DAS system supporting multiple source to access | |
| CN202455351U (en) | Frequency shift repeater for solving indoor covering | |
| CN105406925A (en) | Multi-band frequency digital fiber distributed antenna system | |
| CN101494493B (en) | Digital direct discharging station using digital microwave transmission | |
| CN204244477U (en) | A kind of in-door covering strengthens system and equipment | |
| CN209844960U (en) | Low-power-consumption repeater based on multi-local-vibration radio frequency agility transceiver | |
| CN105246092A (en) | Indoor coverage signal enhancing device and signal processing method thereof | |
| CN108011641A (en) | A kind of aerial retransmission unit of LTE base station | |
| CN203387690U (en) | Multi-mode digital DAS supporting multi-source access | |
| CN203574664U (en) | LTE digital double-channel transmission apparatus | |
| CN203219304U (en) | Energy-efficient multicarrier digital fiber microwave remote extension system | |
| CN201248143Y (en) | Pressing belt ultra-far shrouding system | |
| CN210157391U (en) | Distributed 5G gNB base station based on coaxial distribution network | |
| CN201044493Y (en) | TD-SCDMA indoor distribution system | |
| CN103647846A (en) | Digital multipoint distribution system and transmission processing method thereof | |
| CN203942528U (en) | A kind of wireless coverage strengthens equipment | |
| CN211769564U (en) | Novel access unit of distributed elevator signal amplification system | |
| CN215300635U (en) | 5G base station coupling zoom-out system | |
| CN201550113U (en) | Digital microwave frequency shift repeater station | |
| CN112600595B (en) | Tunnel leaky-cable communication system | |
| CN201054715Y (en) | Radio communication forward system | |
| CN104301910A (en) | CATV cable-sharing multi-mode room division multiplexing method and system | |
| CN201045755Y (en) | Mobile communication radio frequency repeater | |
| CN114401521A (en) | Variable frequency communication transmission method and transmission system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |