CN203313412U - LTE signal coverage system accessed by optical fibers - Google Patents
LTE signal coverage system accessed by optical fibers Download PDFInfo
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- CN203313412U CN203313412U CN2013203624243U CN201320362424U CN203313412U CN 203313412 U CN203313412 U CN 203313412U CN 2013203624243 U CN2013203624243 U CN 2013203624243U CN 201320362424 U CN201320362424 U CN 201320362424U CN 203313412 U CN203313412 U CN 203313412U
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Abstract
The utility model is an LTE signal coverage system accessed by optical fibers. According to the LTE signal coverage system, a multiplexer is connected with a shunt-combiner, the shunt-combiner is connected with a first photoelectric converter, the first photoelectric converter is connected with an optical splitter, the optical splitter is connected with a second photoelectric converter, the second photoelectric converter is respectively connected with one end of an LNA and one end of an MCPA, the other end of the LNA and the other end of the MCPA are respectively connected with a multi-band signal processor, and the multi-band signal processor is connected with an LTE antenna and a GSM antenna. The LTE signal coverage system can better complete MIMO coverage and significantly reduce the transmitting power of a mobile phone terminal and is convenient in construction and low in cost.
Description
Technical field
The utility model relates to communication technical field, particularly a kind of LTE (Long Term Evolution, a kind of mobile communication standard) signal covering system that utilizes the optical fiber access.By the LTE signal covering system of this optical fiber access, this indoor distributed system can be realized the multi-antenna technology of LTE MIMO, and avoids too much laying too much radio frequency transmission cable indoor.
Background technology
Along with rapid development of economy, high-rise building emerges fast, and indoor mobile communication signal covers one and solves straight through the radio frequency transmission compartment system, but the compartment system of radio frequency transmission exists signal attenuation serious, and power attenuation is large, a large amount of problems that adopt of radio-frequency devices.
In 4G (the 4th Generation Mobile Communication System) the LTE epoch, the application characteristic of high-speed data service has determined that the data service major part occurs in the room areas such as office, family, commercial center, venue club.Therefore resolving 4G LTE at indoor signal covering problem, is the emphasis that guarantees the 4G business.Multi-antenna technology (being called for short MIMO) application is the key technology of 4G LTE, utilizes multi-antenna technology to make the data throughout of eNodeB (evolved LTE) community on capacity, have with respect to the single channel a single aerial system lifting gained more than about 1.5-1.8 times.
The indoor signal system of at present traditional mobile communication is all used single radio frequency transmission cable to cover, and can't solve the multiple-input, multiple-output signal application of the many antennas of LTE MIMO; The radio frequency cables of building many covers can address this problem, but except not breaking through the technical problem of conventional radio frequency cable distribution, and when bringing budget unprecedented soaring, and increase construction greatly, property is coordinated difficulty.
The utility model content
The utility model provides the LTE signal covering system of a kind of optical fiber access, better to complete MIMO, cover, significantly reduce the mobile phone terminal transmitting power, and easy construction, cost is low.
To achieve these goals, the utility model provides following technical scheme:
A kind of LTE signal covering system of optical fiber access, it comprises: MH center cell, EH expansion light unit and RU far-end unit, described MH center cell comprises: multiplexer, shunt mixer and the first optical-electrical converter, described EH expansion light unit comprises: optical branching device, and described RU far-end unit comprises: the second optical-electrical converter, LNA (low noise amplifier), MCPA (multisystem power amplifier) and multi-band signal processor;
Described multiplexer is connected with mixer along separate routes, described shunt mixer is connected with the first optical-electrical converter, described the first optical-electrical converter connects optical branching device, described optical branching device connects the second optical-electrical converter, described the second optical-electrical converter connects respectively the end of described LNA and the end of MCPA, the other end of described LNA is connected respectively described multi-band signal processor with the other end of MCPA, and described multi-band signal processor connects LTE antenna and GSM antenna.
By implementing above technical scheme, has following technique effect: the LTE signal covering system of the optical fiber access that the utility model provides, well complete MIMO and cover a difficult problem, when effectively promoting ascending edge speed, significantly reduce the mobile phone terminal transmitting power, to have reduced electromagnetic radiation of mobile telephone, and easy construction, cost is low, do not need to lay radio frequency cable, bring the expense of construction less, realize reducing power budget, adaptive design is adopted in the radio-frequency power output that the RU unit adopts, thereby the RF power that ensures the output of each household antenna opening is consistent, and can debug by the system centre control unit.
The accompanying drawing explanation
Fig. 1 is the system configuration schematic diagram that the utility model offers;
The system applies schematic diagram that Fig. 2 provides for the utility model;
The Another Application schematic diagram of the system that Fig. 3 provides for the utility model.
Embodiment
In order better to understand the technical solution of the utility model, describe below in conjunction with accompanying drawing the embodiment that the utility model provides in detail.
The utility model embodiment provides a kind of LTE signal covering system of optical fiber access, comprises MH (center cell), the EH (expansion light unit) and the RU (far-end unit) that by optical fiber, connect.In described MH center cell, EH expansion light unit and RU far-end unit, be provided with power module, between described MH center cell, EH expansion light unit and RU far-end unit, connect by single or multiple fiber-optic signals, need separately simultaneously the power supply input with the support system normal operation, described each unit controls part is connected monitoring and the commissioning of the system of realization by optical fiber with the MH center cell.The LTE MIMO radiofrequency signal that can be used for the eNodeB of two-way or multichannel, below with the two-way input, as an example this programme is made an explanation:
The first interface 122 of the multiplexer 124 of described MH center cell, the second interface 123 are for the access of two-way MIMO radiofrequency signal (LTE MIMO1 and LTE MIMO2), multiplexer 124 is delivered to mixer 125 along separate routes by above two-way radiofrequency signal, along separate routes the function of mixer 125 is that the MIMO signal is divided into to the signal of telecommunication of multichannel more and delivers to a plurality of the first optical-electrical converters 126 and carry out opto-electronic conversion, sampling, frequency conversion, and reverse signal also is back to mixer 125 along separate routes by the signal of the first optical-electrical converter 126 simultaneously.
By after the first optical-electrical converter 126, having converted light signal to and having carried multichannel MIMO information (for the light signal after synthetic), be sent to the EH expanding element, optical signals optical branching device 127 after should synthesizing becomes the light signal that multichannel is carried same information, and the RU far-end unit connected, after optical branching device 127, more RU remote unit is online to the MH center cell to complete the covering of target area by the EH expanding element.
The second optical-electrical converter 128 of RU far-end unit carries out opto-electronic conversion by the light signal of optical branching device 127, and deliver to MCPA (multisystem power model) 133 and carry out signal and be amplified into multi-band signal processor 130 and process, while is from the access signal of multi-band signal processor 130, by LNA (multisystem low noise block) 129, carry out low noise amplification, and deliver to the second optical-electrical converter 128.By multi-band signal processor 130, be 2 road LTE MIMO radiofrequency signals, be connected to respectively a LTE antenna and GSM antenna and the 2nd LTE antenna.
Simultaneously when the 3rd interface 121 of multiplexer 124 accesses similar GSM900 (a kind of communication standard) or TD-SCDMA (a kind of communication standard) signal, so after above-described processing mode, the GSM carried or TD-SCDMA signal can finally arrive a LTE antenna and GSM antenna, and this is the income of bringing due to many radio systems disposal ability of RU remote unit.
The utility model embodiment adopts Digital Signal Processing, by the radio-frequency signal source of the LTE MIMO of different passages input MH center cell, carry out digitized processing, mainly comprise sampling, digital frequency conversion, digital filtering processing and the opto-electronic conversion processing etc. of signal, be transmitted through the fiber to again the EH expanding element, the EH expanding element carries out digital processing and is distributed into the more signal of multichannel light signal, through optical fiber, it is distributed to the RU remote unit in zone, last opto-electronic conversion becomes multichannel radiofrequency signal to cover a specific zone by the MIMO antenna system again.
Fig. 3 is for this novel networking Application Example: in some overlay areas among a small circle, with the MH center cell, connect the RU remote unit by optical fiber, this RU remote unit is a plurality of, mode by wire jumper on each RU remote unit is connected with the LTE antenna, simply to combine the covering that meets hot spot region.In addition, as shown in Figure 2, in large-scale covering occasion, a MH center cell connects a plurality of EH expanding elements, with stack combinations, and accessible more RU remote unit, mode by wire jumper on each RU remote unit is connected with the LTE antenna, covers with the indoor LTE MIMO that meets large area.
The LTE signal covering system that above a kind of optical fiber that the utility model embodiment is provided accesses is described in detail, for one of ordinary skill in the art, thought according to the utility model embodiment, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (1)
1. the LTE signal covering system of optical fiber access, it is characterized in that, comprise: MH center cell, EH expansion light unit and RU far-end unit, described MH center cell comprises: multiplexer, shunt mixer and the first optical-electrical converter, described EH expansion light unit comprises: optical branching device, and described RU far-end unit comprises: the second optical-electrical converter, LNA, MCPA and multi-band signal processor;
Described multiplexer is connected with mixer along separate routes, described shunt mixer is connected with the first optical-electrical converter, described the first optical-electrical converter connects optical branching device, described optical branching device connects the second optical-electrical converter, described the second optical-electrical converter connects respectively the end of described LNA and the end of MCPA, the other end of described LNA is connected respectively described multi-band signal processor with the other end of MCPA, and described multi-band signal processor connects LTE antenna and GSM antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203624243U CN203313412U (en) | 2013-06-24 | 2013-06-24 | LTE signal coverage system accessed by optical fibers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203624243U CN203313412U (en) | 2013-06-24 | 2013-06-24 | LTE signal coverage system accessed by optical fibers |
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| CN203313412U true CN203313412U (en) | 2013-11-27 |
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| CN2013203624243U Expired - Fee Related CN203313412U (en) | 2013-06-24 | 2013-06-24 | LTE signal coverage system accessed by optical fibers |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103916169A (en) * | 2014-01-29 | 2014-07-09 | 广东科学技术职业学院 | Wireless signal monitoring equipment and method of LTE MIMO indoor optical fiber distribution system |
| CN103944633A (en) * | 2014-04-01 | 2014-07-23 | 广东科学技术职业学院 | TD-LTEMIMO indoor wireless signal distribution optical fiber transmission link fault detecting modules and method |
-
2013
- 2013-06-24 CN CN2013203624243U patent/CN203313412U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103916169A (en) * | 2014-01-29 | 2014-07-09 | 广东科学技术职业学院 | Wireless signal monitoring equipment and method of LTE MIMO indoor optical fiber distribution system |
| CN103916169B (en) * | 2014-01-29 | 2017-06-30 | 广东科学技术职业学院 | LTE MIMO indoor optical fiber distribution system wireless signal monitoring device and method |
| CN103944633A (en) * | 2014-04-01 | 2014-07-23 | 广东科学技术职业学院 | TD-LTEMIMO indoor wireless signal distribution optical fiber transmission link fault detecting modules and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: GUANGDONG KESI ELECTRONIC TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: LV DONGDONG Effective date: 20140820 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 518000 SHENZHEN, GUANGDONG PROVINCE TO: 516000 HUIZHOU, GUANGDONG PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20140820 Address after: 516000 Guangdong province Huizhou City Zhongkai high tech Zone Huifeng two East Road No. 16 C R & D Building Room 403 Patentee after: GUANGDONG KESI ELECTRONIC TECHNOLOGY CO., LTD. Address before: Luohu District Shenzhen City, Guangdong province 518000 Bamboo Road No. 1138 Patentee before: Lv Dongdong |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20150624 |
|
| EXPY | Termination of patent right or utility model |