CN203537395U - LTE MIMO indoor optical fiber distribution system - Google Patents
LTE MIMO indoor optical fiber distribution system Download PDFInfo
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- CN203537395U CN203537395U CN201320634183.3U CN201320634183U CN203537395U CN 203537395 U CN203537395 U CN 203537395U CN 201320634183 U CN201320634183 U CN 201320634183U CN 203537395 U CN203537395 U CN 203537395U
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Abstract
The utility model discloses an LTE MIMO indoor optical fiber distribution system. The LTE MIMO indoor optical fiber distribution system comprises feed lines, an LTE MIMO optical fiber near-end host, an LTE MIMO optical fiber far-end slave, an optical fiber cable, an LTE MIMO optical splitter and a dual-polarized antenna; and a base station signal 1 and a base station signal 2 are coupled to the LTE MIMO optical fiber near-end host through the feed lines, the LTE MIMO optical fiber near-end host is connected with the LTE MIMO optical fiber far-end slave through the optical fiber cable, and the LTE MIMO optical fiber far-end slave is connected with the dual-polarized antenna. Amplification, transmission and control of LTE indoor distributed network signals are achieved, construction difficulty is reduced, indoor network distribution cost is reduced, data transmission rate is increased, and communication quality is improved.
Description
Technical field
This practical Information & Communication Technology field that newly relates to, is specifically related to a kind of LTE MIMO indoor optical fiber distribution system.
Background technology
Along with domestic mobile data services demand increases day by day, domestic each large communication operation commercial city has started LTE(Long Term Evolution, Long Term Evolution) the commercial net of examination build, indoor overlay network construction is the most important thing of 4G network second phase planning.Wherein, MIMO(Multiple-Input Multiple-Out-put) technology is one of 4G core technology, and it is improving aspect network rate and quality, and it is playing the part of key player.The newly-built indoor covering system of current 4G generally adopts double-fed line mimo system.
Yet, adopting double-fed line MIMO indoor coverage of signal, it will face property and coordinate the problem difficult, difficulty of construction is large; At technical elements, the end of double-fed line mimo system---the power of antenna port must be about equally, the i.e. performance number balance of two antenna ports, the indoor overlay area of guarantee peak data rate, now communication quality is optimum, this to tens meters even up to a hundred meters of double-fed line MIMO transmission systems are no small challenges.Balancing antenna mouth power, can only lean on debugging and testing personnel to adjust antenna opening power when engineering opening commissioning or plant maintenance and make it to export balance at present.But, the long-time operation of network, along with impacts such as device aging, ambient temperature variations, certainly will have different impacts to one group of double-fed wire antenna mouth performance number, cause this group antenna opening unbalanced power, and then affect traffic rate and the communication quality of indoor overlay area.And when antenna opening unbalanced power, network monitoring center can't be found this fault at once, only have the network rate, of poor quality during to customer complaint of this section by the time, technical staff just can receive the notice of maintenance.
Utility model content
This practical new object is to provide a kind of LTE MIMO indoor optical fiber distribution system for 4G indoor coverage of signal, realization amplifies, transmits and control LTE indoor distribution network signal, reduces difficulty of construction, lowers the indoor cost of arranging net, improve message transmission rate, improve communication quality.The purpose of this utility model is realized by following technical scheme:
A LTE MIMO indoor optical fiber distribution system, is characterized in that, comprising: feeder line, LTE MIMO proximal fiber main frame, LTE MIMO optical fiber far-end slave, optical fiber cable, LTE MIMO optical branching device, dual polarized antenna; Base station signal 1 and base station signal 2 are coupled to LTE MIMO near-end main frame by feeder line, and LTE MIMO near-end main frame connects LTE MIMO optical fiber far-end slave by optical fiber cable, and LTE MIMO optical fiber far-end slave connects dual polarized antenna.
As concrete technical scheme, described LTE MIMO near-end main frame comprises: two duplexers, integrated up-downgoing frequency-variable module, radio frequency signal combiner, integrated radio-frequency traffic filter, integrated optical transceiver; Described base station signal 1 is coupled by feeder line with base station signal 2, enter respectively each self-corresponding duplexer, the duplexer of base station signal 1 connects radio frequency signal combiner by integrated up-downgoing frequency-variable module, the duplexer of base station signal 1 directly connects radio frequency signal combiner, radio frequency mixer and then through integrated radio-frequency traffic filter connecting integration optical transceiver, integrated optical transceiver connects LTE MIMO optical fiber far-end slave by optical fiber cable.
As concrete technical scheme, described LTE MIMO far-end slave comprises: integrated optical transceiver, integrated radio-frequency traffic filter, radio frequency signal combiner, integrated up-downgoing frequency-variable module, two integrated power amplifier LNA, two duplexers; Integrated optical transceiver one end connects LTE MIMO near-end main frame, and the other end connects radio frequency signal combiner by integrated radio-frequency traffic filter; The radio frequency signal combiner other end is isolated two-way, wherein leads up to integrated Up/Down Conversion module again through integrated power amplifier LNA module and the duplexer of its correspondence, connects dual polarized antenna; Another road directly, through integrated power amplifier LNA module and the duplexer of its correspondence, connects dual polarized antenna.
As further technical scheme, described optical fiber distribution system also comprises LTE MIMO optical branching device, and described LTE MIMO optical fiber far-end slave and dual polarized antenna are more than two; LTE MIMO optical branching device is connected between described LTE MIMO near-end main frame and described LTE MIMO optical fiber far-end slave more than two by optical fiber cable.
As further technical scheme, described optical fiber cable is composite cable, and this composite cable carries out remote power feeding to LTE MIMO optical fiber far-end slave.
The beneficial effects of the utility model are:
A., the power back-off of double-fed line transmission to signal attenuation is provided;
B. can balance control antenna opening power, improve 4G internal home network speed and communication quality;
C. reduce terminal equipment transmitting power, reduce terminal equipment power consumption;
D. can find in time antenna opening power abnormal conditions, notify Surveillance center at once;
E. reduce attendant and turn out for work, lower maintenance cost;
F. according to business demand, can remote adjustment antenna opening power, control coverage, accomplish to save energy and reduce the cost.
Accompanying drawing explanation
The basic comprising block diagram of the LTE MIMO indoor optical fiber distribution system that Fig. 1 provides for embodiment.
The formation block diagram of the multichannel networking of the LTE MIMO indoor optical fiber distribution system that Fig. 2 provides for embodiment.
The theory diagram of near-end main frame in the LTE MIMO indoor optical fiber distribution system that Fig. 3 provides for embodiment.
The theory diagram of far-end slave in the LTE MIMO indoor optical fiber distribution system that Fig. 4 provides for embodiment.
Embodiment
Below in conjunction with accompanying drawing and embodiment, to originally practical, be newly described in further detail.
As shown in Figure 1, the LTE MIMO indoor optical fiber distribution system that the present embodiment provides comprises: transmission feeder, LTE MIMO near-end main frame, signal mode fiber cable, LTE MIMO far-end slave and dual polarized antenna.Downlink transfer link: base station signal 1 and base station signal 2, by feeder line, be coupled to LTE MIMO near-end main frame, after LTE MIMO near-end host process, by composite fiber optical cable, be sent to LTE MIMO far-end slave, LTE MIMO far-end slave to its information processing after, then carry out indoor coverage of signal by dual polarized antenna; Up link: after near the wireless messages that dual polarized antenna receives, terminal equipment sends, be transferred to LTE MIMO near-end main frame, through LTE MIMO near-end main frame, signal is processed to conversion, pass through again composite fiber optical cable transmission to LTE MIMO near-end main frame, the signal that LTE MIMO near-end main frame sends over remote termination carries out conversion process, by feeder line, is sent to base station.
As shown in Figure 2, under the situation of multichannel networking, LTE MIMO indoor optical fiber distribution system also comprises LTE MIMO optical branching device, organizes LTE MIMO far-end slave and dual polarized antenna more.By LTE MIMO near-end main frame, composite fiber optical cable, LTE MIMO optical branching device, a plurality of LTE MIMO far-end slave, a plurality of dual polarized antenna and transmission feeder.In the networking of LTE MIMO indoor optical-fibre distribution multichannel, by LTE MIMO optical branching device, the remote equipment of LTE MIMO is carried out to multichannel distribution, networking, the LTE MIMO indoor optical fiber distribution system of its uplink downlink transmission means and Fig. 1 is identical.
As shown in Figure 3, be LTE MIMO indoor optical fiber distribution system near-end main frame theory diagram.Near-end main frame comprises: two duplexers, integrated up-downgoing frequency-variable module, radio frequency signal combiner, integrated radio-frequency traffic filter, integrated optical transceiver, main process equipment monitor portion, main process equipment Power supply part.Downstream signal handle link: base station signal 1 is coupled by feeder line with base station signal 2, enter respectively each self-corresponding duplexer, by integrated up-downgoing frequency-variable module, after being down-converted to 1300MHz, radiofrequency signal by radio frequency mixer, closes road with base station signal 2, after the filtering of integrated radio-frequency traffic filter is processed, by integrated optical transceiver, carry out light-to-current inversion, radiofrequency signal is modulated on the light carrier of 1550nm, the optical carrier after modulation is sent to far-end from machine equipment by composite fiber optical cable; Upward signal handle link: integrated optical transceiver receives the light signal that far-end brings by optical fiber transmission from machine equipment, it is carried out to light-to-current inversion, after the filtering of integrated radio-frequency traffic filter is processed, by radio frequency signal combiner, isolate two-way radiofrequency signal, wherein a road upconverts to LTE communications band through integrated up-downgoing frequency-variable module, now two-way radiofrequency signal is passed through respectively corresponding duplexer, then is transported to base station by feeder line.
As shown in Figure 4, be LTE MIMO indoor optical fiber distribution system slave theory diagram.Far-end slave comprises: integrated optical transceiver, integrated radio-frequency traffic filter, radio frequency signal combiner, integrated up-downgoing frequency-variable module, integrated power amplifier LNA, duplexer, slave monitoring of tools part, slave device power supply (DPS) power pack.Downstream signal handle link: integrated optical transceiver passes through light-to-current inversion after receiving the signal that near-end main frame sends, through the filtering of integrated radio-frequency traffic filter, process, radiofrequency signal after processing is isolated two-way radiofrequency signal through radio frequency signal combiner, wherein a road radiofrequency signal is by integrated Up/Down Conversion module, radiofrequency signal is upconverted to LTE communications band, two-way radiofrequency signal now, by each self-corresponding integrated power amplifier LNA module, it is carried out to radio-frequency power amplification respectively again, radiofrequency signal after amplification is launched radiofrequency signal by each self-corresponding duplexer respectively by dual polarized antenna, upward signal handle link: after near the radiofrequency signal that dual polarized antenna receives, terminal equipment sends over, respectively by each self-corresponding duplexer, integrated power amplifier LNA is carried out low noise power amplification to upward signal, wherein rear radiofrequency signal is amplified through integrated Up/Down Conversion module in a road, be down-converted to 1400MHz, two-way radiofrequency signal is now closed road by radio frequency mixer and is entered the filtering of integrated radio-frequency traffic filter and process, radiofrequency signal after processing is by the light wave of integrated optical transceiver modulation 1310nm, optical carrier after modulation is sent to near-end main process equipment by composite fiber optical cable.
The utility model, in near-end main frame and far-end slave, has carried out frequency-conversion processing to a roadbed station radiofrequency signal wherein, and every main frame or slave only need a pair of emission and reception module, have greatly saved equipment cost.In far-end slave, utilize automatic gain control to implement effective control balancing system to dual polarized antenna mouth power, improve indoor message transmission rate and communication quality.The beneficial effects of the utility model are also:
A. with optical fiber, carry out indoor arranging net, reduce difficulty of construction, reduce construction cost;
B., simple optical fiber MIMO transmission is provided, reduces the use of optical fiber and optical transceiver, greatly reduce costs;
C. provide double-fed line dual polarized antenna signal to cover, improve traffic rate;
D. can control dual polarized antenna mouth power by active balance, improve internal home network speed and communication quality;
E. according to business demand, can remote adjustment antenna opening power, control coverage, accomplish to save energy and reduce the cost;
F. provide intelligence in net monitoring in real time, reduce attendant and turn out for work, lower maintenance cost;
G., remote power feeding function is provided, solves the difficult problem of LTE MIMO optical fiber far-end slave power taking.
Claims (5)
1. a LTE MIMO indoor optical fiber distribution system, is characterized in that, comprising: feeder line, LTE MIMO proximal fiber main frame, LTE MIMO optical fiber far-end slave, optical fiber cable, LTE MIMO optical branching device, dual polarized antenna; Base station signal 1 and base station signal 2 are coupled to LTE MIMO near-end main frame by feeder line, and LTE MIMO near-end main frame connects LTE MIMO optical fiber far-end slave by optical fiber cable, and LTE MIMO optical fiber far-end slave connects dual polarized antenna.
2. LTE MIMO indoor optical fiber distribution system according to claim 1, is characterized in that: described LTE MIMO near-end main frame comprises: two duplexers, integrated up-downgoing frequency-variable module, radio frequency signal combiner, integrated radio-frequency traffic filter, integrated optical transceiver; Described base station signal 1 is coupled by feeder line with base station signal 2, enter respectively each self-corresponding duplexer, the duplexer of base station signal 1 connects radio frequency signal combiner by integrated up-downgoing frequency-variable module, the duplexer of base station signal 1 directly connects radio frequency signal combiner, radio frequency mixer and then through integrated radio-frequency traffic filter connecting integration optical transceiver, integrated optical transceiver connects LTE MIMO optical fiber far-end slave by optical fiber cable.
3. LTE MIMO indoor optical fiber distribution system according to claim 1, is characterized in that: described LTE MIMO far-end slave comprises: integrated optical transceiver, integrated radio-frequency traffic filter, radio frequency signal combiner, integrated up-downgoing frequency-variable module, two integrated power amplifier LNA, two duplexers; Integrated optical transceiver one end connects LTE MIMO near-end main frame, and the other end connects radio frequency signal combiner by integrated radio-frequency traffic filter; The radio frequency signal combiner other end is isolated two-way, wherein leads up to integrated Up/Down Conversion module again through integrated power amplifier LNA module and the duplexer of its correspondence, connects dual polarized antenna; Another road directly, through integrated power amplifier LNA module and the duplexer of its correspondence, connects dual polarized antenna.
4. according to the LTE MIMO indoor optical fiber distribution system described in claim 1,2 or 3, it is characterized in that: described optical fiber distribution system also comprises LTE MIMO optical branching device, described LTE MIMO optical fiber far-end slave and dual polarized antenna are more than two; LTE MIMO optical branching device is connected between described LTE MIMO near-end main frame and described LTE MIMO optical fiber far-end slave more than two by optical fiber cable.
5. LTE MIMO indoor optical fiber distribution system according to claim 4, is characterized in that: described optical fiber cable is composite cable, and this composite cable carries out remote power feeding to LTE MIMO optical fiber far-end slave.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320634183.3U CN203537395U (en) | 2013-10-14 | 2013-10-14 | LTE MIMO indoor optical fiber distribution system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320634183.3U CN203537395U (en) | 2013-10-14 | 2013-10-14 | LTE MIMO indoor optical fiber distribution system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106535213A (en) * | 2016-11-30 | 2017-03-22 | 中国电信股份有限公司常州分公司 | Peer branch interlacing method for realizing FDD-LTE double-stream data transmission mode indoors |
-
2013
- 2013-10-14 CN CN201320634183.3U patent/CN203537395U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106535213A (en) * | 2016-11-30 | 2017-03-22 | 中国电信股份有限公司常州分公司 | Peer branch interlacing method for realizing FDD-LTE double-stream data transmission mode indoors |
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Granted publication date: 20140409 Termination date: 20151014 |
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