CN202535360U - Novel TD-LTE indoor distribution MIMO frequency conversion system - Google Patents

Novel TD-LTE indoor distribution MIMO frequency conversion system Download PDF

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Publication number
CN202535360U
CN202535360U CN2012201824448U CN201220182444U CN202535360U CN 202535360 U CN202535360 U CN 202535360U CN 2012201824448 U CN2012201824448 U CN 2012201824448U CN 201220182444 U CN201220182444 U CN 201220182444U CN 202535360 U CN202535360 U CN 202535360U
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control unit
radiofrequency signal
control
frequency
send
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CN2012201824448U
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陈建
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Abstract

The utility model relates to a mobile communication network device and provides a novel TD-LTE indoor distribution MIMO frequency conversion system which can realize full synchronization or time-delay minimization of the frequency conversion system and a base, and avoid interference of other systems on the frequency conversion system. The novel TD-LTE indoor distribution MIMO frequency conversion system comprises a near-end machine and a far-end machine, wherein an output terminal of the near-end machine and an input terminal of the far-end machine are connected through a feeder line system, the near-end machine comprises multi-path radio frequency signal transmission channels with a same transmission mode, a combiner and a monitoring center unit, the far-end machine comprises a combiner, multi-path radio frequency signal transmission channels with a same transmission mode, an antenna and a monitoring center unit, by detecting envelope of middlelink and downlink radio signals of the radio frequency signal transmission channels, after the envelope is shaped by an envelope shaping unit, and sent to a control unit and compared with built-in work modes in the control unit, and the control unit selects the work mode and outputs control codes to realize synchronous transmitting and receiving of the indoor distribution MIMO frequency conversion system.

Description

A kind of novel TD-LTE divides MIMO frequency conversion system in the chamber
Technical field
The utility model relates to mobile communication network device, relates in particular to a kind of novel TD-LTE chamber and divides MIMO frequency conversion system.
Background technology
Multi-antenna technology (being called for short MIMO) is one of key technology of 4G LTE; Utilize multi-antenna technology (emission or receive diversity, spatial reuse and wave beam forming); Be that multichannel transceiver path is worked simultaneously; Make the data throughout of base station cell almost double, its solution is to use frequency conversion chamber subsystem.If but frequency conversion chamber subsystem and base station can not be better synchronous, not only can't realize the lifting of the data throughout of base station cell, also can influence the normal use of original system.The general at present method of synchronization that adopts only detects signal, signal is not handled, and in time-delay, anti-interference aspect can't effectively solve.
The utility model content
Therefore, to above-mentioned problem, the utility model proposes a kind of other system that minimizes, avoids synchronous fully or time-delay of frequency conversion system and base station of realizing and divides MIMO frequency conversion system to the novel TD-LTE chamber of the interference of native system.
For solving this technical problem, the utility model is taked following scheme: a kind of novel TD-LTE divides MIMO frequency conversion system in the chamber, comprises near-end machine and remote termination, and said near-end machine output is connected through feeder system with the remote termination input;
Said near-end machine comprises that the same radiofrequency signal of multiplex mode transmits passage, mixer, feed system and Surveillance center unit; It is the radiofrequency signal that receives the base station that said radiofrequency signal transmits passage; Get into the wave detector detection through coupler coupling back; Divide two-way output after the detection; The envelope of one tunnel radiofrequency signal is sent into control unit through the envelope shaping cell processing; First switch output downlink radio-frequency signal and up radiofrequency signal two paths of signals are then controlled by control unit output Synchronization Control sign indicating number in another road, and wherein downlink radio-frequency signal carries out filtering, processing and amplifying through filter and power amplifier, send into frequency converter through step attenuator again and combine the local oscillator of control unit control to carry out frequency translation; Then downlink radio-frequency signal again through power amplifier and filter amplify, Filtering Processing, control second switch through control unit output Synchronization Control sign indicating number at last and send into mixer; Up radiofrequency signal is then carried out filtering, processing and amplifying through filter and power amplifier; Delivering to frequency converter then combines the local oscillator of control unit control to carry out frequency translation; Send into power amplifier and filter amplifies, Filtering Processing through step attenuator again; Send into mixer through control unit output Synchronization Control sign indicating number control second switch at last; Mixer closes the road with each road radiofrequency signal and each local oscillator and sends into feed system and carry out distant signal and transmit, and the control unit that said each road radiofrequency signal transmits passage all is connected with the Surveillance center unit;
Said remote termination comprises mixer, radiofrequency signal transfer passage, antenna and Surveillance center unit that multiplex mode is the same; Said each road radiofrequency signal transmission passage receives by mixer respectively sees radiofrequency signal off; This radiofrequency signal is through the wave detector detection; Divide two-way output after the detection; The envelope of one tunnel radiofrequency signal is sent into control unit through the envelope shaping cell processing; First switch output downlink radio-frequency signal and up radiofrequency signal two paths of signals are then controlled by control unit output Synchronization Control sign indicating number in another road, and wherein downlink radio-frequency signal carries out filtering, processing and amplifying through filter and power amplifier, send into frequency converter through step attenuator again and combine to carry out frequency translation by the local oscillator through control unit control that mixer is seen off; Then downlink radio-frequency signal again through power amplifier and filter amplify, Filtering Processing, send into the antenna emission through control unit output Synchronization Control sign indicating number control second switch at last; Up radiofrequency signal is then carried out filtering, processing and amplifying through filter and power amplifier; Delivering to frequency converter then combines the local oscillator of the control unit control that mixer sees off to carry out frequency translation; Send into power amplifier and filter amplifies, Filtering Processing through step attenuator again; Send into the antenna emission through control unit output Synchronization Control sign indicating number control second switch at last, the control unit that said each road radiofrequency signal transmits passage all is connected with the Surveillance center unit.
Through adopting the aforementioned techniques scheme; The beneficial effect of the utility model is: through detecting the envelope that radiofrequency signal transmits radiofrequency signal descending in the passage, send into control unit through the shaping of envelope shaping unit, with the built-in mode of operation contrast of control unit; The selected again mode of operation output of control unit Synchronization Control sign indicating number; Make the transmitting-receiving of indoor MIMO frequency conversion system synchronous, realize frequency conversion system and base station fully synchronously or minimizing of delaying time, and avoided the interference of other system to native system.
Description of drawings
Fig. 1 is the system principle diagram of the utility model embodiment.
Embodiment
Combine accompanying drawing and embodiment that the utility model is further specified at present.
The utility model is applicable to that the above TD-LTE chamber of two-way or two-way divides MIMO frequency conversion system, below the utility model carry with the two-way radio frequency and further the utility model made detailed description as embodiment.
With reference to figure 1, frequency conversion system is divided MIMO in a kind of novel TD-LTE chamber of preferred the utility model, comprises near-end machine 1 and remote termination 2, and said near-end machine 1 output is connected through feeder system 3 with remote termination 2 inputs;
Said near-end machine 1 comprises that A, the radiofrequency signal that B two-way load mode is the same transmit passage, mixer 12 and Surveillance center unit 13; It is the radiofrequency signal that receives from the base station that said A road radiofrequency signal transmits passage; Get into wave detector 102 detections through coupler 101 coupling backs; Divide two-way output after the detection; The envelope of one tunnel radiofrequency signal is handled through envelope shaping unit 103 and is sent into control unit 104; First switch output downlink radio-frequency signal and up radiofrequency signal two paths of signals are then controlled by control unit 104 output Synchronization Control sign indicating numbers in another road, and wherein downlink radio-frequency signal carries out filtering, processing and amplifying through filter 106 and power amplifier 107, send into frequency converter 109 through step attenuator 108 again and combine first local oscillator 110 of control unit 104 controls to carry out frequency translation; Then downlink radio-frequency signal again through power amplifier 111 and filter 112 amplify, Filtering Processing, at last through sending into mixer 12 behind the control unit 104 output Synchronization Control sign indicating numbers control second switches 113; Up radiofrequency signal is then carried out filtering, processing and amplifying through filter 114 and power amplifier 115; Delivering to frequency converter 116 then combines first local oscillator 110 of control unit 104 controls to carry out frequency translation; Send into through step attenuator 117 again that power amplifier 118 amplifies with filter 119, Filtering Processing; At last through sending into mixer 12 behind the control unit 104 output Synchronization Control sign indicating number control second switches 113; B road radiofrequency signal load mode is the same with the A road; By mixer 12 A, B two-way radiofrequency signal, first local oscillator 110 and second local oscillator 120 being closed the road more at last sends into feed system 3 and carries out distant signal and transmit; The control unit that wherein said A, B two-way radiofrequency signal transmit passage all is connected with Surveillance center unit 13, wherein revises through envelope shaping unit 103 shapings processing and to the sudden change that detects signal according to the envelopes of the descending radiofrequency signal of wave detector 102 detections in real time, sends into control unit 104 then; 8 kinds of mode of operation contrasts with the TD-LTE that prestores in the control unit 104; Confirm the pattern of the synchronizing signal of employing, the selected again mode of operation output of control unit 104 Synchronization Control sign indicating number, radiofrequency signal to the mixer 12 that control output is synchronous.
Said remote termination 2 comprises mixer 21, A, B two-way radiofrequency signal transfer passage, A antenna 22, B antenna 23 and Surveillance center unit 24; Said A, B two-way radiofrequency signal transmission passage receive respectively by mixer 21 and see radiofrequency signal off; Wherein A road radiofrequency signal is through wave detector 201 detections; Divide two-way output after the detection; The envelope of one tunnel radiofrequency signal is handled through envelope shaping unit 202 and is sent into control unit; First switch output downlink radio-frequency signal and up radiofrequency signal two paths of signals are then controlled by control unit 203 output Synchronization Control sign indicating numbers in another road; Wherein downlink radio-frequency signal carries out filtering, processing and amplifying through filter 205 and power amplifier 206; Send into frequency converter 208 through step attenuator 207 again and combine to carry out frequency translation by first local oscillator that mixer 21 is seen off through control unit 203 controls, then downlink radio-frequency signal again through power amplifier 209 and filter 210 amplify, Filtering Processing, send into 22 emissions of A antenna through control unit 203 output Synchronization Control sign indicating numbers control second switches 211 at last; Up radiofrequency signal is then carried out filtering, processing and amplifying through filter 212 and power amplifier 213; Delivering to frequency converter 214 then combines second local oscillator of control unit 203 controls that mixers 21 see off to carry out frequency translation; Send into through step attenuator 215 again that power amplifier 216 amplifies with filter 217, Filtering Processing; Send into antenna 22 emissions through control unit 203 output Synchronization Control sign indicating number control second switches 211 at last; Said B road radiofrequency signal load mode is the same with the A road; B road radiofrequency signal is launched by B antenna 23 through being called for short control and treatment synchronously, and the control unit that said A, B two-way radiofrequency signal transmit passage all is connected with Surveillance center unit 24, wherein revises through envelope shaping unit 202 shapings processing and to the sudden change that detects signal according to the envelopes of the descending radiofrequency signal of wave detector 201 detections in real time; Send into control unit 203 then; With 8 kinds of mode of operation contrasts of the TD-LTE that prestores in the control unit 203, confirm the pattern of the synchronizing signal of employing, the selected again mode of operation output of control unit 203 Synchronization Control sign indicating number; Control second switch 211 makes the transmitting-receiving and the base station synchronization of indoor MIMO frequency conversion system from antenna synchronized transmissions radiofrequency signal
The utility model is through detecting the envelope that radiofrequency signal transmits radiofrequency signal descending in the passage; Send into control unit through the shaping of envelope shaping unit; With the built-in mode of operation contrast of control unit, the selected again mode of operation output of control unit Synchronization Control sign indicating number makes the transmitting-receiving of indoor MIMO frequency conversion system synchronous; Minimizing of the synchronous fully or time-delay of realization frequency conversion system and base station, and avoided the interference of other system to native system.
Although specifically show and introduced the utility model in conjunction with preferred embodiment; But the those skilled in the art should be understood that; In the spirit and scope of the utility model that does not break away from appended claims and limited; Can make various variations to the utility model in form with on the details, be the protection range of the utility model.

Claims (1)

1. frequency conversion system is divided MIMO in a novel TD-LTE chamber, it is characterized in that: comprise near-end machine and remote termination, said near-end machine output is connected through feeder system with the remote termination input;
Said near-end machine comprises that the same radiofrequency signal of multiplex mode transmits passage, mixer, feed system and Surveillance center unit; It is the radiofrequency signal that receives the base station that said radiofrequency signal transmits passage; Get into the wave detector detection through coupler coupling back; Divide two-way output after the detection; The envelope of one tunnel radiofrequency signal is sent into control unit through the envelope shaping cell processing; First switch output downlink radio-frequency signal and up radiofrequency signal two paths of signals are then controlled by control unit output Synchronization Control sign indicating number in another road, and wherein downlink radio-frequency signal carries out filtering, processing and amplifying through filter and power amplifier, send into frequency converter through step attenuator again and combine the local oscillator of control unit control to carry out frequency translation; Then downlink radio-frequency signal again through power amplifier and filter amplify, Filtering Processing, control second switch through control unit output Synchronization Control sign indicating number at last and send into mixer; Up radiofrequency signal is then carried out filtering, processing and amplifying through filter and power amplifier; Delivering to frequency converter then combines the local oscillator of control unit control to carry out frequency translation; Send into power amplifier and filter amplifies, Filtering Processing through step attenuator again; Send into mixer through control unit output Synchronization Control sign indicating number control second switch at last; Mixer closes the road with each road radiofrequency signal and each local oscillator and sends into feed system and carry out distant signal and transmit, and the control unit that said each road radiofrequency signal transmits passage all is connected with the Surveillance center unit;
Said remote termination comprises mixer, radiofrequency signal transfer passage, antenna and Surveillance center unit that multiplex mode is the same; Said each road radiofrequency signal transmission passage receives by mixer respectively sees radiofrequency signal off; This radiofrequency signal is through the wave detector detection; Divide two-way output after the detection; The envelope of one tunnel radiofrequency signal is sent into control unit through the envelope shaping cell processing; First switch output downlink radio-frequency signal and up radiofrequency signal two paths of signals are then controlled by control unit output Synchronization Control sign indicating number in another road, and wherein downlink radio-frequency signal carries out filtering, processing and amplifying through filter and power amplifier, send into frequency converter through step attenuator again and combine to carry out frequency translation by the local oscillator through control unit control that mixer is seen off; Then downlink radio-frequency signal again through power amplifier and filter amplify, Filtering Processing, send into the antenna emission through control unit output Synchronization Control sign indicating number control second switch at last; Up radiofrequency signal is then carried out filtering, processing and amplifying through filter and power amplifier; Delivering to frequency converter then combines the local oscillator of the control unit control that mixer sees off to carry out frequency translation; Send into power amplifier and filter amplifies, Filtering Processing through step attenuator again; Send into the antenna emission through control unit output Synchronization Control sign indicating number control second switch at last, the control unit that said each road radiofrequency signal transmits passage all is connected with the Surveillance center unit.
CN2012201824448U 2012-04-26 2012-04-26 Novel TD-LTE indoor distribution MIMO frequency conversion system Expired - Fee Related CN202535360U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103529288A (en) * 2013-10-31 2014-01-22 深圳市云海通讯股份有限公司 Method for reading power values of multiple paths of RF signals and detecting circuit
CN107786990A (en) * 2014-10-21 2018-03-09 福建三元达网络技术有限公司 A kind of TDD LTE multiple-input and multiple-output indoor covering methods
CN111770505A (en) * 2020-07-08 2020-10-13 展讯通信(上海)有限公司 Communication control unit, near-end connection module, far-end covering module and indoor distribution system
CN116095694A (en) * 2022-11-17 2023-05-09 陕西天基通信科技有限责任公司 Device and method for supporting 5G near-far end wireless frequency shift

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103529288A (en) * 2013-10-31 2014-01-22 深圳市云海通讯股份有限公司 Method for reading power values of multiple paths of RF signals and detecting circuit
CN103529288B (en) * 2013-10-31 2016-10-05 深圳市云海通讯股份有限公司 A kind of method reading multi-channel rf signal power value and detecting circuit
CN107786990A (en) * 2014-10-21 2018-03-09 福建三元达网络技术有限公司 A kind of TDD LTE multiple-input and multiple-output indoor covering methods
CN107889120A (en) * 2014-10-21 2018-04-06 福建三元达网络技术有限公司 A kind of indoor covering system of the up anti-interferences of raising TDD LTE
CN107889120B (en) * 2014-10-21 2021-06-25 安科讯(福建)科技有限公司 Indoor coverage system for improving TDD-LTE uplink interference immunity
CN111770505A (en) * 2020-07-08 2020-10-13 展讯通信(上海)有限公司 Communication control unit, near-end connection module, far-end covering module and indoor distribution system
CN111770505B (en) * 2020-07-08 2021-09-14 展讯通信(上海)有限公司 Communication control unit, near-end connection module, far-end covering module and indoor distribution system
CN116095694A (en) * 2022-11-17 2023-05-09 陕西天基通信科技有限责任公司 Device and method for supporting 5G near-far end wireless frequency shift

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Granted publication date: 20121114

Termination date: 20130426