CN203387508U - Novel multi-network-fusion indoor distribution system - Google Patents

Novel multi-network-fusion indoor distribution system Download PDF

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Publication number
CN203387508U
CN203387508U CN201320437089.9U CN201320437089U CN203387508U CN 203387508 U CN203387508 U CN 203387508U CN 201320437089 U CN201320437089 U CN 201320437089U CN 203387508 U CN203387508 U CN 203387508U
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signal
optical fiber
unit
far
access
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褚如龙
吴志坚
李鑫
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Sunwave Communications Co Ltd
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Sunwave Communications Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

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Abstract

The utility model relates to a novel multi-network-fusion indoor distribution system. The novel multi-network-fusion indoor distribution system includes an access unit, an expansion unit and a remote unit which can transmit signal through digital optical fibers; the access unit can couple downlink radio frequency signals from RRUs in different systems, wherein the radio frequency signals pass through a digital processing unit and thereafter are converted into baseband digital signals; and the access unit can receive downlink baseband signals from BBUs in different systems, wherein the downlink baseband signals also pass through the digital processing unit and thereafter can be transmitted together with baseband digital signals which are received and processed by a radio frequency coupling port. With the multi-network-system signal access and coverage system disclosed by the utility model adopted, duplicate construction can be avoided, and energy-saving and environmental-protection properties can be realized; and at the same time, the system supports multi-form signal access, and therefore, network construction can be more flexible and convenient.

Description

Novel many nets merge indoor distributed system
Technical field
The utility model relates to the indoor Covering domain of mobile communications network, is that a kind of novel many nets merge indoor distributed system.
Background technology
For solving the indoor covering problem of radio signal, effective method is built indoor distributed system exactly at present, base station signal is incorporated into to each indoor zone, thereby coverage hole in decontamination chamber, for indoor user provides stable, reliable radio signal, make indoor user enjoy high-quality communication service.
Along with the development of radio communication, the network of the multiple types such as 2G/3G/4G all needs to carry out indoor covering simultaneously.And traditional coverage mode is based on repeater or the indoor distributed system based on RF remote unit (RRU), every kind of equipment can only be supported a kind of network formats, can't realize with a set of equipment transmission and the covering of the multiple types networks such as 2G/3G/4G, this has directly caused the cost of whole networking to increase.
The utility model content
The utility model will solve the shortcoming of above-mentioned prior art, provides a kind of novel many nets to merge indoor distributed system, and this system integration degree is high, and a set of equipment can be realized transmission and the covering of the multiple types networks such as 2G/3G/4G; Networking is flexible, and the information source access way both can, from the radio frequency output coupling access (with the indoor distributed system based on repeater) of RRU, also can access (with the indoor distributed system based on RRU) from the base band output optical fibre of BBU.
The utility model solves the technical scheme that its technical problem adopts: this novel many nets merge indoor distributed system, comprise access unit, expanding element and far-end unit, pass through the digital fiber signal transmission between access unit, expanding element and far-end unit; Described access unit can be coupled multichannel from the downlink radio-frequency signal of different systems RRU, converts baseband digital signal to and transmitted by optical fiber after digital processing element; Can receive the downgoing baseband signal from different systems BBU by optical fiber, also can be through being transmitted by optical fiber together with RF-coupled mouthful of baseband digital signal that receives and processed after digital processing element.(described access unit can be coupled the N road from the downlink radio-frequency signal of different systems RRU, after mixing and analog-to-digital conversion, by digital processing element, carries out the base band relevant treatment and framing is transmitted by optical fiber; It also can receive the downgoing baseband signal of different systems BBU and carry out the dependency basis tape handling according to specified protocol by optical fiber, together with the signal of then coming with radio frequency path by New Deal framing again and by optical fiber, transmitted).
Described far-end unit extracts signal and exports the downstream signal of each frequency range standard from optical fiber, by sending into together antenna-feedback system behind the POIHe road, realizes the covering of indoor regional; After POI isolates the upward signal of each frequency range standard from antenna-feedback system, by after described far-end unit carries out digital processing, by optical fiber, sending access unit back to and finally be delivered in the corresponding BBU of each standard or RRU, go.
Described expanding element can the access network based on ethernet signal with after original signal in optical fiber framing again together with transmission, also can from optical fiber, separate frame extraction ethernet signal; Described far-end unit can be separated frame and extract ethernet signal from optical fiber, also can the access network based on ethernet signal with after original signal in optical fiber framing again together with transmission, for Ethernet transparent transmission link is provided between expanding element and far-end unit.
Described access unit can one or more expanding elements in parallel, and expanding element can cascade multi-tier unit, and expanding element can multi-stage far-end in parallel unit simultaneously; Described access unit is direct one or more far-end unit in parallel also.
The utility model is star-like, the networking mode of chain or mixing makes networking more flexible.
The effect that the utility model is useful is: adopt information source access, digital fiber transmission, far-end to cover and realize indoor coverage of signal.Access unit had both been supported the signal access of many network formats; Support again multi-form signal access: from the simulation of RRU, export RF-coupled or access from the digital fiber base band of BBU.The utility model discloses a kind of signal access and covering system of many network formats, avoided repeated construction, energy-conserving and environment-protective; This system is supported multi-form signal access simultaneously, makes networking also more flexible.
The accompanying drawing explanation
Fig. 1 is system block diagram of the present utility model;
Fig. 2 is that the utility model is netted the theory diagram that merges access unit in indoor distributed system more;
Fig. 3 is that the utility model is netted the theory diagram that merges expanding element in indoor distributed system more;
Fig. 4 is that the utility model is netted the theory diagram that merges far-end unit in indoor distributed system more;
Fig. 5 is that the utility model is netted the network-building method that merges indoor distributed system more.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, it mainly is comprised of access unit, expanding element and far-end unit system block diagram of the present utility model, realizes the indoor covering that many nets merge.
Access unit is connected with the simulation output of RRU or is connected with the optical fiber output of BBU, for receiving downstream signal and transmitting upward signal; It is connected with expanding element by optical fiber.
Expanding element is connected by internet devices such as gigabit network interface and switches, merges together with the data that the Ethernet data received is come with the access unit transmission and passes to far-end unit; The data decomposition received from far-end unit is opened, and Ethernet data is passed to the connected internet devices such as switch, and upward signal transmits tieback and enters unit.
Far-end unit is exported to the POIHe road to the downstream signal received from expanding element and is sent into antenna-feedback system, realizes indoor covering; Simultaneously the upward signal received by the optical fiber transmission expanding element of pulling over.Far-end unit extracts Ethernet data and gives the plug-in internet devices such as AP from optical fiber, and the Ethernet data of the internet devices such as AP through the optical fiber transmission expanding element of pulling over, realize transparent Ethernet transmission link.During the plug-in AP of far-end unit, the output of AP also can realize covering by the POIHe road in antenna-feedback system.
As shown in Figure 2, external interface is mainly 4 radio frequency interfaces and 6 optical fiber interfaces to the theory diagram of access unit.Radio frequency interface, for communicating by letter with RRU, transmits uplink and downlink signals; Wherein 4 optical fiber interfaces, for being connected with expanding element or the far-end unit of next stage, have identical optical fiber speed; Other 2 optical fiber interfaces are fixed for communicating by letter with BBU, transmit uplink and downlink signals, can use different optical fiber speed.
The access unit internal main will be comprised of radio frequency unit, digital processing element, optical fiber interface, monitoring, clock and monitoring etc.Radio frequency unit is realized mixing and filtering, the functions such as gain adjustment, analog-to-digital conversion of downstream signal; Realize the function such as digital-to-analogue conversion, modulated filter, gain adjustment of upward signal; Uplink and downlink signals closes road by duplex.Digital processing element carries out the DDC/DUC processing, according to agreement, carries out framing solution frame the data of radio frequency interface; Data to the BBU optical fiber interface are carried out Base-Band Processing by the agreement of appointment, finally with together with the data of radio frequency interface according to new agreement framing solution frame; Downstream signal after processing is sent toward 4 optical fiber interfaces, the upward signal received from 4 optical fiber interfaces is closed to Lu Houzai and processed.Optical fiber interface is realized the conversion of going here and there and reaching and going here and there, but supports the light mouth of 4 tunnel phase same rates and the light mouth of 2 tunnel separate configurations speed.Monitoring unit achieves a butt joint into the control of unit, control information is delivered to digital processing element and carries out the framing transmission by agreement, realizes the Control on Communication to miscellaneous equipment in whole network topology simultaneously.When not meeting BBU, clock unit adopts the reference clock of local reference clock as whole system, and provides system required various work clocks; When meeting BBU, clock unit adopts the clock recovered in optical fiber as the reference clock.Power subsystem is realized voltage transitions, provides system required various different voltage; Backup battery is provided, realizes power fail warning; International full AC-AC input, realize the direct current input by changing power module.
As shown in Figure 3, external interface is mainly 8 gigabit Ethernet mouths and 10 optical fiber interfaces to the theory diagram of expanding element.The gigabit Ethernet mouth is for being connected with the internet device such as switch, support 10/100/1000M rate adaptation; Fix 1 optical fiber interface for connecting access unit or higher level's expanding element; Fix 1 optical fiber interface for connecting the expanding element of subordinate; All the other 8 optical fiber interfaces are for connecting far-end unit, corresponding one by one with 8 gigabit Ethernet mouths, i.e. after the data of gigabit Ethernet mouth N packing, only mail to optical fiber interface N.
The expanding element internal main will be comprised of digital processing element, optical fiber interface, Ethernet interface, monitoring, clock and power supply.Digital processing element outputs to far-end unit to the data of coming from access unit or higher level's expanding element from optical fiber interface N with framing together with data that Ethernet interface N comes; The downstream signal received from access unit or higher level's expanding element is sent toward all the other 9 optical fiber interfaces, deliver to access unit or higher level's expanding element the upward signal received from other 9 optical fiber interfaces is closed to road.Optical fiber interface is realized going here and there and reaching parallel-serial conversion, adopts identical light mouth speed.Adopt 24 passage gigabit Ethernet PHY chips, interface adopts RGMII interface and digital processing element to communicate.Monitoring unit is realized the control to expanding element, information is delivered to digital processing element and carries out the framing transmission by agreement, with the control that communicates of miscellaneous equipment in whole network topology simultaneously.Clock unit is used the reference clock recovered from optical fiber, provides system required various work clocks.Power subsystem is realized voltage transitions, provides system required various different voltage; Backup battery is provided, realizes power fail warning; International full AC-AC input, realize the direct current input by changing power module.
As shown in Figure 4, external interface mainly contains 1 optical fiber interface, 1 gigabit Ethernet mouth and 4 radio frequency interfaces to the theory diagram of far-end unit.Optical fiber interface is for connecting access unit or expanding element; Ethernet interface, for connecting plug-in internet device, is supported the 10/100/1000M rate adaptation; Radio frequency interface is connected to POI, and downstream signal JingPOIHe road outputs to antenna feeder, and the upward signal that antenna feeder receives is delivered to each radio frequency interface after POI separates.
The far-end unit internal main will be comprised of optical fiber interface, Ethernet interface, digital processing element, radio frequency unit, monitoring, clock and power supply.Optical fiber interface realizes going here and there and reaching parallel-serial conversion.Single channel gigabit Ethernet PHY chip interface adopts RGMII interface and digital processing element to communicate.Digital processing element carries out the downstream signal received from optical fiber to export to radio frequency unit after the DUC processing, and the upward signal DDC that radio frequency unit is come sends into optical fiber interface after processing and transmitted.Radio frequency unit carries out digital-to-analogue conversion, adjustment, the modulated filter of gaining to downstream signal and carries out final amplification output, upward signal is carried out to low noise and amplify rear mixing and filtering, gain adjustment, analog-to-digital conversion, and uplink and downlink signals closes road by duplex.Monitoring unit is realized the control to far-end unit, information is delivered to digital processing element and carries out the framing transmission by agreement, with the control that communicates of miscellaneous equipment in whole network topology simultaneously.Clock unit is used the reference clock recovered from optical fiber, provides system required various work clocks.Power subsystem is realized voltage transitions, provides system required various different voltage; Backup battery is provided, realizes power fail warning; International full AC-AC input, realize the direct current input by changing power module.
Fig. 5 is that the utility model is netted the network-building method that merges indoor distributed system more, very flexibly, support the networking mode of star-like, chain and mixing, can select different networking modes according to scene in practical application.
Access unit has 4 optical fiber interfaces for connecting the next stage unit.
Far-end unit can be directly connected to access unit, now between these two unit, does not possess the Ethernet pass-through channel.
Far-end unit is connected to access unit after also can first connecting expanding element, now between expanding element and far-end unit, has the ethernet channel of a transparent transmission.
An expanding element can connect 8 far-end units, when covering needs unnecessary 8 remote terminations, can realize by a plurality of expanding elements of cascade, but far-end unit only forms the ethernet channel of transparent transmission with direct-connected expanding element.
In addition to the implementation, the utility model can also have other execution modes.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection range of the utility model requirement.

Claims (4)

1. novel many nets merge indoor distributed system, it is characterized in that: comprise access unit, expanding element and far-end unit, pass through the digital fiber signal transmission between access unit, expanding element and far-end unit; Described access unit can be coupled multichannel from the downlink radio-frequency signal of different systems RRU, converts baseband digital signal to and transmitted by optical fiber after digital processing element; Can receive the downgoing baseband signal from different systems BBU by optical fiber, through being transmitted by optical fiber after digital processing element together with RF-coupled mouthful of baseband digital signal that receives and processed.
2. novel many nets according to claim 1 merge indoor distributed system, and it is characterized in that: described far-end unit extracts signal and exports the downstream signal of each frequency range standard from optical fiber, by sending into together antenna-feedback system behind the POIHe road; After POI isolates the upward signal of each frequency range standard from antenna-feedback system, by after described far-end unit carries out digital processing, by optical fiber, sending access unit back to and finally be delivered in the corresponding BBU of each standard or RRU, go.
3. novel many nets according to claim 1 merge indoor distributed systems, it is characterized in that: described expanding element can the access network based on ethernet signal with after original signal in optical fiber framing again together with transmission, also can from optical fiber, separate frame extraction ethernet signal; Described far-end unit can be separated frame and extract ethernet signal from optical fiber, also can the access network based on ethernet signal with after original signal in optical fiber framing again together with transmission, for Ethernet transparent transmission link is provided between expanding element and far-end unit.
4. novel many nets according to claim 1 merge indoor distributed system, it is characterized in that: described access unit can one or more expanding elements in parallel, expanding element can cascade multi-tier unit, and expanding element can multi-stage far-end in parallel unit simultaneously; Described access unit is direct one or more far-end unit in parallel also.
CN201320437089.9U 2013-07-17 2013-07-17 Novel multi-network-fusion indoor distribution system Expired - Fee Related CN203387508U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104320791A (en) * 2014-03-04 2015-01-28 同济大学 Far-end unit of mobile communication micropower digital multi-point indoor cover system
CN106550371A (en) * 2015-09-23 2017-03-29 中兴通讯股份有限公司 A kind of multiple source cut-in method and system
CN107295532A (en) * 2017-08-16 2017-10-24 京信通信系统(中国)有限公司 A kind of optical fiber distribution system and communication means
CN109474934A (en) * 2018-11-02 2019-03-15 京信通信系统(中国)有限公司 A kind of base station system and base station expansion method
WO2020037928A1 (en) * 2018-08-24 2020-02-27 浙江三维通信科技有限公司 Digital optical fiber-based distributed signal control system

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104320791A (en) * 2014-03-04 2015-01-28 同济大学 Far-end unit of mobile communication micropower digital multi-point indoor cover system
CN106550371A (en) * 2015-09-23 2017-03-29 中兴通讯股份有限公司 A kind of multiple source cut-in method and system
WO2017049829A1 (en) * 2015-09-23 2017-03-30 中兴通讯股份有限公司 Multi-source access method and system
CN107295532A (en) * 2017-08-16 2017-10-24 京信通信系统(中国)有限公司 A kind of optical fiber distribution system and communication means
CN107295532B (en) * 2017-08-16 2020-06-23 京信通信系统(中国)有限公司 Optical fiber distribution system and communication method
WO2020037928A1 (en) * 2018-08-24 2020-02-27 浙江三维通信科技有限公司 Digital optical fiber-based distributed signal control system
EP3829083A4 (en) * 2018-08-24 2021-10-06 Zhejiang Sunwave Communications Technology Co., Ltd Digital optical fiber-based distributed signal control system
US11438067B2 (en) 2018-08-24 2022-09-06 Zhejiang Sunwave Communications Technology Co., Ltd Digital optical fiber-based distributed signal control system
CN109474934A (en) * 2018-11-02 2019-03-15 京信通信系统(中国)有限公司 A kind of base station system and base station expansion method
CN109474934B (en) * 2018-11-02 2021-12-14 京信网络系统股份有限公司 Base station system and base station capacity expansion method

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