CN208691250U - A kind of communication full-service light distribution system being applicable in more scenes - Google Patents
A kind of communication full-service light distribution system being applicable in more scenes Download PDFInfo
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- CN208691250U CN208691250U CN201821496376.6U CN201821496376U CN208691250U CN 208691250 U CN208691250 U CN 208691250U CN 201821496376 U CN201821496376 U CN 201821496376U CN 208691250 U CN208691250 U CN 208691250U
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- optical fiber
- rru
- remote radio
- radio unit
- signal
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Abstract
The utility model discloses a kind of communication full-service light distribution systems for being applicable in more scenes, control unit is accessed including signal, expanding element, remote radio unit (RRU), digital optical fiber direct station and connection optical fiber group, connecting optical fiber group includes optical fiber and fiber optic splitter, signal access control unit output end is connect by optical fiber with expanding element input terminal, expanding element output end connects optical fiber, optical fiber connects fiber optic splitter, two output ends of fiber optic splitter are connect with digital optical fiber direct station and remote radio unit (RRU) respectively, the optical signal input of digital optical fiber direct station and remote radio unit (RRU) is additionally provided with MLSE balanced device.The utility model can select being applied in combination for wherein one or two according to the difference of application scenarios, meet the quality that several scenes use and can guarantee to transmit signal, the optical signal input of digital optical fiber direct station and remote radio unit (RRU) is provided with MLSE balanced device, eliminates intersymbol interference adverse effect caused by communication performance in optical fiber transmission process.
Description
Technical field
The utility model belongs to light distribution systems technology field, and in particular to a kind of communication full-service light for being applicable in more scenes
Compartment system.
Background technique
Mobile network have passed through the construction of many years, but indoor depth covering problem is always the short of mobile network signals quality
Plate.Traditional indoor distributed system is faced with very big challenge: place limitation and property are coordinated, equipment is difficult to install；On main line
Loss of signal is big, power attenuation is big；Number of devices is numerous, it is difficult to monitor and difficult in maintenance.Novel light distribution system is not only
It solves above-mentioned difficulties, also while merging multiple business, meet the multiple services access such as 2G, 3G, 4G, WLAN, broadband services.Often
Light distribution service system is made of access control unit, proximal spread unit, remote radio unit (RRU), with the side of total digitalization
Formula supports the access of the multisystems such as 2G, 3G, LTE, WLAN, fixed network broadband.The 2G/3G/4G signal that access control unit is coupled to receive
Proximal spread unit is transmitted to by optical fiber, while broadband signal can access proximal spread unit by Ethernet interface, then by cable
It is transferred to remote radio unit (RRU).
Pass through under the baseband signal of remote radio unit (RRU) frequency conversion, filtering, by rf filtering, the linear power amplification of amplification
Antenna feeder is reached by sending filtering after device.On be about to the mobile terminal uplink signal received through filtering, low noise amplification, further
RF small signals amplification filtering and down coversion, then complete analog-to-digital conversion and Digital IF Processing etc..It is to utilize station spare
Channel board and baseband processing equipment form new sector, by fibre system draw at a distance, have person it be base band pool technology,
Also the microcellulor technology that someone makes it zoom out in short, it has hardware capabilities, and possesses new scrambling code and synchronous code.Due to
Remote radio unit (RRU) has base station performance, and largely using in the sector of macro base station necessarily will increase many scrambling codes and adjacent area column
Pilot pollution occurs for table, excessive meeting, and soft handover increases, and influences signal transmission quality.
Digital optical fiber direct station is RF signal to be become digital intermediate frequency signal through frequency-conversion processing, then carry out by fiber optic stretch
Transmission, in the use of scrambling code, the scrambling code of digital optical fiber direct station radiofrequency signal is always identical with the scrambling code of donor base station, number
Optical fiber repeater does not increase BTS channel plate hardware capabilities and orthogonal code capacity yet, so largely use can't increase in sector
Scrambled code.If macro base station carrier frequency is more, capacity is flush with money, it is more suitable to be zoomed out with digital optical fiber direct station, while can reduce sector
Scrambling code, it is more suitable if the interior traffic needs are larger with remote radio unit (RRU) to make signal source, if traffic needs are very
Greatly, such as large-scale office building, conference and exhibition center, digital optical fiber direct station, the network interworking of remote radio unit (RRU) can be used.So existing
It cannot by the light distribution system for the single network structure being made of access control unit, proximal spread unit, remote radio unit (RRU)
Meeting the communicating requirement of whole scenes, the light distribution service system of existing remote radio unit (RRU) composition is easy to happen pilot pollution,
Soft handover increases, and influences signal transmission quality.Existing light distribution system is in optical fiber transmission process simultaneously, and light pulse is in optical fiber
It can occur to broaden phenomenon when transmitting in channel, the broadening of this pulse will cause the intersymbol interference between adjacent pulse, to increase
The bit error rate of system, reduces the performance of optical fiber telecommunications system.So needing applicability wider, signal transmission quality is more preferable,
The light distribution system of performance preferably.
Utility model content
The purpose of this utility model is that: it solves existing by access control unit, proximal spread unit, remote radio unit (RRU)
The light distribution system of the single network structure of composition is not able to satisfy the communicating requirement of whole scenes, is easy to happen pilot pollution, soft
Switching increases, and the bit error rate of increase system is easy in optical fiber transmission process, influences signal transmission quality, reduces fiber optic communication system
The problem of performance of system, proposes a kind of communication full-service light distribution system for being applicable in more scenes, is connected respectively by fiber optic splitter
Digital optical fiber direct station and remote radio unit (RRU) are connect, the combination of wherein one or two can be selected to make according to the difference of application scenarios
With, meet several scenes use and can guarantee transmit signal quality, the light of digital optical fiber direct station and remote radio unit (RRU)
Signal input part is provided with MLSE balanced device, eliminates intersymbol interference nocuousness shadow caused by communication performance in optical fiber transmission process
It rings.
The technical solution adopted in the utility model is as follows:
A kind of communication full-service light distribution system being applicable in more scenes, including it is signal access control unit, expanding element, remote
Radio frequency unit, digital optical fiber direct station and connection optical fiber group are held, connection optical fiber group includes optical fiber and fiber optic splitter, signal access
Control unit output end is connect by optical fiber with expanding element input terminal, and expanding element output end connects optical fiber, and optical fiber connects light
Two output ends of fine beam splitter, fiber optic splitter are connect with digital optical fiber direct station and remote radio unit (RRU) respectively, digital light
The optical signal input of fine repeater and remote radio unit (RRU) is additionally provided with MLSE balanced device.
Further, the signal access control unit uses the star-like networking of point to multi--point to expanding element, and extension is single
Chain networking is used between member, expanding element is to remote radio unit (RRU) and digital optical fiber direct station using the star-like of point to multi--point
Networking.
Further, Wireless monitoring module is provided in the signal access control unit.
Further, the remote radio unit (RRU) uses the integrated type antenna of built-in antenna.
Further, the signal accesses setting for control unit, expanding element, remote radio unit (RRU) and digital optical fiber direct station
Waterproof cover is both provided on standby interface.
Further, the digital optical fiber direct station and remote radio unit (RRU) are mounted in same cabinet, by two switches point
Not Kong Zhi digital optical fiber direct station and remote radio unit (RRU) open or close.
Further, the signal accesses entering for control unit, expanding element, remote radio unit (RRU) and digital optical fiber direct station
Line end is fitted with lightning protection device.
Further, the signal access control unit, expanding element, remote radio unit (RRU) and digital optical fiber direct station equipment
Shell be both provided with waterproof coating.
In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are:
1, in the utility model, digital optical fiber direct station and remote radio unit (RRU) are separately connected by fiber optic splitter, it can
Being applied in combination for wherein one or two is selected according to the difference of application scenarios, meets several scenes and uses and can guarantee to transmit
The optical signal input of the quality of signal, digital optical fiber direct station and remote radio unit (RRU) is provided with MLSE balanced device, eliminates
Intersymbol interference adverse effect caused by communication performance in optical fiber transmission process；
2, in the utility model, signal accesses the star-like networking that control unit uses point to multi--point to expanding element, expands
It opens up and uses chain networking between unit, expanding element is to far-end unit and digital optical fiber direct station using the star-like of point to multi--point
Networking, the network structure that can satisfy multi-stage user end use；
3, in the utility model, it is provided with Wireless monitoring module in signal access control unit, each nothing can be monitored
The case where line output terminal mouth, finds the failure and problem of system in time；
4, in the utility model, remote radio unit (RRU) uses the integrated type antenna of built-in antenna, and built-in antenna can increase
Strong wireless signal guarantees communication quality；
5, in the utility model, signal accesses control unit, expanding element, remote radio unit (RRU) and digital optical fiber direct station
Equipment interface on be both provided with waterproof cover, guarantee that all of the port guarantees waterproof in non-wiring in use process；
6, in the utility model, digital optical fiber direct station and remote radio unit (RRU) are mounted in same cabinet, are opened by two
It closes and controls opening or closing for digital optical fiber direct station and remote radio unit (RRU) respectively, save installation space, it is more convenient to use；
7, in the utility model, signal accesses control unit, expanding element, remote radio unit (RRU) and digital optical fiber direct station
Lead-in wire terminal be fitted with lightning protection device, guarantee system is not easy failure in thunder and lightning weather, and performance is more stable；
8, in the utility model, signal accesses control unit, expanding element, remote radio unit (RRU) and digital optical fiber direct station
The shell of equipment is both provided with waterproof coating, increases the waterproof performance of system.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is Tthe utility model system structural schematic diagram.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this
Invention is not used to limit the utility model, i.e., the described embodiments are only a part of the embodiments of the utility model, without
It is whole embodiments.The component of the utility model embodiment being usually described and illustrated herein in the accompanying drawings can with it is various not
With configuration arrange and design.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Reality based on the utility model
Apply example, those skilled in the art's every other embodiment obtained without making creative work belongs to
The range of the utility model protection.
It should be noted that the relational terms of term " first " and " second " or the like be used merely to an entity or
Operation is distinguished with another entity or operation, and without necessarily requiring or implying between these entities or operation, there are any
This actual relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive
Property include so that include a series of elements process, method, article or equipment not only include those elements, but also
Further include other elements that are not explicitly listed, or further include for this process, method, article or equipment it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described
There is also other identical elements in the process, method, article or equipment of element.
A kind of communication full-service light distribution system being applicable in more scenes, it is straight to be separately connected digital fiber by fiber optic splitter
Station and remote radio unit (RRU) are put, being applied in combination for wherein one or two can be selected according to the difference of application scenarios, met a variety of
The optical signal input of scene use and the quality that can guarantee to transmit signal, digital optical fiber direct station and remote radio unit (RRU) is set
It is equipped with MLSE balanced device, eliminates intersymbol interference adverse effect caused by communication performance in optical fiber transmission process.System includes
Signal accesses control unit, expanding element, remote radio unit (RRU), digital optical fiber direct station and connection optical fiber group, connects optical fiber group
Including optical fiber and fiber optic splitter, signal access control unit output end is connect by optical fiber with expanding element input terminal, is extended
Unit output end connects optical fiber, and optical fiber connects fiber optic splitter, and two output ends of fiber optic splitter are straight with digital fiber respectively
It puts station to connect with remote radio unit (RRU), the optical signal input of digital optical fiber direct station and remote radio unit (RRU) is additionally provided with MLSE
Balanced device.
Further, the signal access control unit uses the star-like networking of point to multi--point to expanding element, and extension is single
Chain networking is used between member, expanding element is to remote radio unit (RRU) and digital optical fiber direct station using the star-like of point to multi--point
Networking.
Further, Wireless monitoring module is provided in the signal access control unit.
Further, the remote radio unit (RRU) uses the integrated type antenna of built-in antenna.
Further, the signal accesses setting for control unit, expanding element, remote radio unit (RRU) and digital optical fiber direct station
Waterproof cover is both provided on standby interface.
Further, the digital optical fiber direct station and remote radio unit (RRU) are mounted in same cabinet, by two switches point
Not Kong Zhi digital optical fiber direct station and remote radio unit (RRU) open or close.
Further, the signal accesses entering for control unit, expanding element, remote radio unit (RRU) and digital optical fiber direct station
Line end is fitted with lightning protection device.
Further, the signal access control unit, expanding element, remote radio unit (RRU) and digital optical fiber direct station equipment
Shell be both provided with waterproof coating.
Signal access control unit mainly realizes radiofrequency signal access and Digital Signal Processing and photoelectric converting function, packet
Include: forward link: GSM the and LTE downlink radio-frequency signal of information source is transformed to intermediate-freuqncy signal by converter unit, this intermediate-freuqncy signal warp
Become digital baseband signal after crossing Digital IF processing unit ADC and the FPGA signal processing of master unit, is carried out by laser
After photoelectric conversion, downstream digital signal is sent to expanding element；Reverse link: laser receives the uplink that expanding element is sent
Digital signal, by becoming analog if signal after FPGA and DAC signal processing, this signal passes through mixing unit again and is transformed to
Row GSM and LTE radio signal.
Expanding element mainly realize photoelectric conversion, the combining of digital medium-frequency signal and broadband signal and downlink signal function point/
Uplink signal combining.Include: forward link: downstream digital signal being received by laser, the lower line width exported with ONU or AC
Band signal combining, protocol conversion of the digital signal Jing Guo certain format after combining, by function sub-unit by downstream digital signal
RU is transmitted to by corresponding optical port；Reverse link: will be from the received digital uplink signal combining of all optical ports, by width therein
Band signal separated transmission is transferred to master unit after passing through laser photoelectric conversion to ONU or AC, isolated digital medium-frequency signal.
Remote radio unit (RRU) mainly realizes radiofrequency signal and digital signal conversion and the access of broadband signal processing, packet
It includes: forward link: receiving the downstream digital signal sent by optical fiber, decomposite each standard data according to regulation format protocol
Come, the parallel data of recovery carries out Digital Signal Processing again, by the last D of the intermediate frequencies algorithm process such as filtering, interpolation A recovery
At radiofrequency signal, most crosses and signal covering is carried out to target area by antenna.Meanwhile the ONU gone out from downstream digital signal decomposition
Broadband signal completes AP wireless coverage by WLAN unit；Reverse link: pass through the received 2G/4G upstream radio-frequency signal of antenna
It is transformed to intermediate-freuqncy signal by mixing unit, after this signal passes through ADC and FPGA signal processing, it is single that extension is transferred to by optical fiber
Member.
Digital optical fiber direct station is made of near-end machine and remote termination, in practical application, near-end machine is one, and remote termination
Can be one or more, group in parallel can also connect on the net, networking mode can also diversification, such as: external, go in ring,
It is tree-like etc..Near-end machine by the base station downlink signal received by coupling, down-converted, to base band become i/q signal or
Low intermediate frequency signal is packaged into serial data by certain frame format after ADC transforms to digital signal, then is sent to distal end through optical fiber
Machine, remote termination restore i/q signal or low intermediate frequency signal through baseband processing unit frame decoding, transform to analog signal through DAC, then on
It is converted to radio frequency, emitted subsystem is launched；The mobile terminal uplink signal received is passed through above-mentioned inverse mistake by remote termination
Journey is above sent to base station receiving end.
According to wherein one or two group of the different selection digital optical fiber direct stations and remote radio unit (RRU) of application scenarios
It closes in use, directly selecting one of them to close or open by the facility switching of digital optical fiber direct station and remote radio unit (RRU)
?.If macro base station carrier frequency is more, capacity is flush with money, digital optical fiber direct station is selected to zoom out, while sector scrambling code can be reduced,
Make signal source with remote radio unit (RRU) if the interior traffic needs are larger, if traffic needs are very big, as large size is write
Word building, conference and exhibition center etc., with digital optical fiber direct station, the network interworking of remote radio unit (RRU).
Feature and performance of the invention are described in further detail with reference to embodiments.
Embodiment 1
A kind of communication full-service light distribution system for being applicable in more scenes that the utility model preferred embodiment provides, system packet
Signal access control unit, expanding element, remote radio unit (RRU), digital optical fiber direct station and connection optical fiber group are included, optical fiber is connected
Group includes optical fiber and fiber optic splitter, and signal access control unit output end is connect with expanding element input terminal by optical fiber, expanded
Open up unit output end connect optical fiber, optical fiber connect fiber optic splitter, two output ends of fiber optic splitter respectively with digital fiber
Repeater is connected with remote radio unit (RRU), and digital optical fiber direct station and remote radio unit (RRU) are mounted in same cabinet, by two
Switch controls opening or closing for digital optical fiber direct station and remote radio unit (RRU), digital optical fiber direct station and far end radio frequency respectively
The optical signal input of unit is additionally provided with MLSE balanced device.Remote radio unit (RRU) uses the integrated type antenna of built-in antenna.
Signal accesses the star-like networking that control unit uses point to multi--point to expanding element, uses chain between expanding element
Type networking, expanding element use the star-like networking of point to multi--point to remote radio unit (RRU) and digital optical fiber direct station.1 information source
1 signal access control unit is connect, 6 expanding elements, 42 remote radio unit (RRU)s and digital optical fiber direct station are connect.
Wireless monitoring module is provided in signal access control unit.
Further, the signal accesses setting for control unit, expanding element, remote radio unit (RRU) and digital optical fiber direct station
Waterproof cover is both provided on standby interface.
The lead-in wire terminal that signal accesses control unit, expanding element, remote radio unit (RRU) and digital optical fiber direct station is all installed
There is lightning protection device.
The shell that signal accesses control unit, expanding element, remote radio unit (RRU) and digital optical fiber direct station equipment is all set
It is equipped with waterproof coating.
Signal accesses control unit, expanding element, remote radio unit (RRU) and digital optical fiber direct station and supports three kinds of installation sides
Wall installation, rack installation and cabinet installation are hung likes:.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (8)
1. a kind of communication full-service light distribution system for being applicable in more scenes, it is characterised in that: including signal access control unit, expand
Unit, remote radio unit (RRU), digital optical fiber direct station and connection optical fiber group are opened up, connection optical fiber group includes optical fiber and fiber beam splitting
Device, signal access control unit output end are connect by optical fiber with expanding element input terminal, and expanding element output end connects optical fiber,
Optical fiber connects fiber optic splitter, and two output ends of fiber optic splitter connect with digital optical fiber direct station and remote radio unit (RRU) respectively
It connects, the optical signal input of digital optical fiber direct station and remote radio unit (RRU) is additionally provided with MLSE balanced device.
2. a kind of communication full-service light distribution system for being applicable in more scenes according to claim 1, it is characterised in that: described
Signal accesses the star-like networking that control unit uses point to multi--point to expanding element, uses chain networking between expanding element,
Expanding element uses the star-like networking of point to multi--point to remote radio unit (RRU) and digital optical fiber direct station.
3. a kind of communication full-service light distribution system for being applicable in more scenes according to claim 1, it is characterised in that: described
Wireless monitoring module is provided in signal access control unit.
4. a kind of communication full-service light distribution system for being applicable in more scenes according to claim 1, it is characterised in that: described
Remote radio unit (RRU) uses the integrated type antenna remote radio unit (RRU) of built-in antenna.
5. a kind of communication full-service light distribution system for being applicable in more scenes according to claim 1, it is characterised in that: described
Signal access control unit, expanding element, remote radio unit (RRU) and digital optical fiber direct station equipment interface on be both provided with it is anti-
Water cover.
6. a kind of communication full-service light distribution system for being applicable in more scenes according to claim 1, it is characterised in that: described
Digital optical fiber direct station and remote radio unit (RRU) are mounted in same cabinet, control digital optical fiber direct station respectively by two switches
With opening or closing for remote radio unit (RRU).
7. a kind of communication full-service light distribution system for being applicable in more scenes according to claim 1, it is characterised in that: described
The lead-in wire terminal that signal accesses control unit, expanding element, remote radio unit (RRU) and digital optical fiber direct station is fitted with lightning protection device.
8. a kind of communication full-service light distribution system for being applicable in more scenes according to claim 1, it is characterised in that: described
The shell that signal accesses control unit, expanding element, remote radio unit (RRU) and digital optical fiber direct station equipment is both provided with waterproof
Coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821496376.6U CN208691250U (en) | 2018-09-13 | 2018-09-13 | A kind of communication full-service light distribution system being applicable in more scenes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821496376.6U CN208691250U (en) | 2018-09-13 | 2018-09-13 | A kind of communication full-service light distribution system being applicable in more scenes |
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| Publication Number | Publication Date |
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| CN208691250U true CN208691250U (en) | 2019-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821496376.6U Active CN208691250U (en) | 2018-09-13 | 2018-09-13 | A kind of communication full-service light distribution system being applicable in more scenes |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114679765A (en) * | 2020-12-24 | 2022-06-28 | 中国电信股份有限公司 | Method, device and medium for energy conservation of repeater |
-
2018
- 2018-09-13 CN CN201821496376.6U patent/CN208691250U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114679765A (en) * | 2020-12-24 | 2022-06-28 | 中国电信股份有限公司 | Method, device and medium for energy conservation of repeater |
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