CN102918924A - Providing digital data services in optical fiber -based distributed radio frequency (RF) communications system - Google Patents

Providing digital data services in optical fiber -based distributed radio frequency (RF) communications system Download PDF

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Publication number
CN102918924A
CN102918924A CN2011800244994A CN201180024499A CN102918924A CN 102918924 A CN102918924 A CN 102918924A CN 2011800244994 A CN2011800244994 A CN 2011800244994A CN 201180024499 A CN201180024499 A CN 201180024499A CN 102918924 A CN102918924 A CN 102918924A
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China
Prior art keywords
communication
signal
down link
link
optical fiber
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CN2011800244994A
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Chinese (zh)
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CN102918924B (en
Inventor
威廉·P·丘恩
迈克尔·索尔
沃尔夫冈·G·施韦克
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Corning Research and Development Corp
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Corning Optical Communications LLC
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Priority claimed from US12/892,424 external-priority patent/US20110268446A1/en
Application filed by Corning Optical Communications LLC filed Critical Corning Optical Communications LLC
Priority to CN201610029179.2A priority Critical patent/CN105577282B/en
Publication of CN102918924A publication Critical patent/CN102918924A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H04W88/085—Access point devices with remote components
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
    • H04B10/25752—Optical arrangements for wireless networks
    • H04B10/25753—Distribution optical network, e.g. between a base station and a plurality of remote units
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0278—WDM optical network architectures
    • H04J14/0282—WDM tree architectures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0298—Wavelength-division multiplex systems with sub-carrier multiplexing [SCM]

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Optical fiber-based distributed communications systems that provide and support both RF communication services and digital data services are disclosed herein. The RF communication services and digital data services can be distributed over optical fiber to client devices, such as remote antenna units for example. In certain embodiments, digital data services can be distributed over optical fiber separate from optical fiber distributing RF communication services. In other embodiments, digital data services can be distributed over common optical fiber with RF communication services. For example, digital data services can be distributed over common optical fiber with RF communication services at different wavelengths through wavelength-division multiplexing (WDM) and/or at different frequencies through frequency-division multiplexing (FDM). Power distributed in the optical fiber-based distributed communications system to provide power to remote antenna units can also be accessed to provide power to digital data service components.

Description

In distributed radio frequency (RF) communication system based on optical fiber, provide digital data service
Related application
The U.S. Provisional Patent Application case the 6 1/330 of " Providing Digital Data Servicesin Optical Fiber-based Distributed Radio Frequency (RF) the Communications Systems; and Related Components and Methods " by name of the application's case request application on May 2nd, 2010, No. 386, the U.S. Provisional Patent Application case the 61/393rd of application on October 14th, 2010, the U. S. application case the 12/892nd of 1 No. 77 and on September 28th, 2010 application, No. 424 priority, the full text of described application case is incorporated herein by reference.
The application's case relates to the U.S. Provisional Patent Application case the 61/330th of " Power Distribution in OpticalFiber-based Distributed Communications Systems Providing Digital Data andRadio Frequency (RF) the Communications Services; and Related Components andMethods " by name of application on May 2nd, 2010, No. 385, the full text of described application case is incorporated herein by reference.
The application's case also relates to the U.S. Provisional Patent Application case the 61/330th of " the Optical Fiber-basedDistributed Communications Systems; and Related Components and Methods " by name of application on May 2nd, 2010, No. 383, the full text of described application case is incorporated herein by reference.
Technical field
The technology of disclosure case relates to for the distributed communication system based on optical fiber by fiber distribution radio frequency (RF) signal.
Background technology
Along with to the ever-increasing demand of high-speed mobile data communication, radio communication develops rapidly.For example, so-called " Wireless Fidelity " or " WiFi " system and wireless lan (wlan) just are being configured in many dissimilar zones (for example, cafe, airport, library etc.).Distributed communication system and the wireless device that is called " client ", described wireless device must be positioned at wireless range or " cell coverage area ", in order to communicate by letter with access point apparatus.
A kind of method of configuring distributed communication system comprises following steps: use radio frequency (RF) antenna coverage areas, be also referred to as " antenna coverage areas ".For example, antenna coverage areas can have scope from several meters to the radius up to 20 meters.Make up some access point apparatus and form the antenna coverage areas array.Because each antenna coverage areas covers among a small circle, so each antenna coverage areas only has several users (client) usually.This situation allows to minimize the quantity of the RF bandwidth of sharing between wireless system users.May in building or other facility, provide antenna coverage areas to provide the distributed communication system access with the client in building or facility.Yet, may need to adopt optical fiber to come the allocate communications signal.The benefit of optical fiber comprises the bandwidth of increase.
The distributed communication system (being called " optical fiber radio " or " RoF ") that one class is used to form antenna coverage areas utilizes the RF signal that sends by optical fiber.Described system can comprise headend station, and described headend station is couple to a plurality of far-end antenna elements optically, and each described far-end antenna element provides antenna coverage areas.The far-end antenna element can comprise the RF transceiver separately, and described RF transceiver is couple to antenna with wireless transmission RF signal, and wherein the far-end antenna element is couple to headend station via optical fiber link.The RF signal can be by the RF transceiver in the far-end antenna element.The far-end antenna element will be converted to electric RF signal via light from the optics RF signal that the downlink optical fiber link imports into to electricity (O/E) transducer, and described electric RF signal then is delivered to the RF transceiver.The RF transceiver is converted to electromagnetic signal via antenna with electric RF signal, and described antenna is couple to the RF transceiver that is provided in the far-end antenna element.Antenna is the client electromagnetic signal from antenna coverage areas (that is, electromagnetic radiation) and described electromagnetic signal is converted to electric RF signal (that is, the electric RF signal in the electric wire) also.The far-end antenna element then is converted to optics RF signal via electricity to light (E/O) transducer with electric RF signal.Optics RF signal then sends to headend station by the uplink optical fiber link.
Summary of the invention
Disclosed execution mode comprises the distributed communication system based on optical fiber in the embodiment, and described system provides and support two kinds of radio frequency (RF) communication service and digital data service.RF communication service and digital data service can arrive client terminal device by fiber distribution, for example, and the far-end antenna element.The fiber distribution that digital data service can be separated by the optical fiber with distribution RF communication service.Perhaps, digital data service can be distributed with the RF communication service by optical fiber commonly used.For instance, digital data service can be distributed with the RF communication service by optical fiber commonly used with different frequency with different wave length and/or via frequency division multiplexing (FDM) via wavelength division multiplexing (WDM).Being distributed in based on being used in the distributed communication system of optical fiber provides the power supply of power supply also to can be used for providing power supply to the digital data service assembly to the far-end antenna element.
In one embodiment, provide a kind of distributing antenna system for RF communication service and digital data service (DDS) being assigned at least one far-end antenna element (RAU).Distributing antenna system comprises front end unit (HEU).HEU is through arranging to receive the electric RF signal of communication of at least one down link.Also through arranging the electric RF signal of communication of at least one down link is converted at least one down link optics RF signal of communication, described at least one down link optics RF signal of communication is to be sent at least one RAU by at least one communication downlink for HEU.HEU is also through arranging to receive at least one up link optics RF signal of communication by at least one communication uplink from least one RAU.HEU is also through arranging so that at least one up link optics RF signal of communication is converted to the electric RF signal of communication of at least one up link.Distributing antenna system also comprises the DDS controller.The DDS controller reaches and provides at least one down link optical digital signal by at least one second communication down link at least one RAU through at least one the down link optical digital signal that contains at least one DDS with reception is set.
In another embodiment, provide a kind of method that RF communication and DDS is assigned at least one RAU in the distributing antenna system.Said method comprising the steps of: receive the electric RF signal of communication of at least one down link at the HEU place.Described method is further comprising the steps of: the electric RF signal of communication of at least one down link is converted at least one down link optics RF signal of communication, and described at least one down link optics RF signal of communication is to be sent at least one RAU by at least one communication downlink.Described method is further comprising the steps of: receive at least one up link optics RF signal of communication by at least one communication uplink from least one RAU at the HEU place.Described method is further comprising the steps of: at least one up link optics RF signal of communication is converted to the electric RF signal of communication of at least one up link.Described method is further comprising the steps of: receive at least one the down link optical digital signal that contains at least one DDS at DDS controller place, and provide at least one down link optical digital signal by at least one second communication down link at least one RAU.
In another embodiment, provide a kind of RAU for distributing antenna system.Described RAU comprises that light is to electricity (O-E) transducer, described O-E transducer is converted to the electric RF signal of communication of down link through arranging with the down link optics RF signal of communication that will receive, and provides at least one first port for the electric RF signal of communication of down link.Described RAU also comprises electricity to light (E-O) transducer, and described E-O transducer is through arranging being converted to up link optics RF signal of communication from the electric RF signal of communication of the up link that at least one the first port receives.Described RAU also comprises the DDS interface, and described DDS interface is couple at least one second port.The DDS interface is through arranging the down link optical digital signal to be converted to the electric digital signal of down link being provided at least one second port, and will be converted to up link optics digital signal from the uplink electrical destiny word signal that at least one the second port receives.
To in embodiment subsequently, set forth additional features structure and advantage, and to those of ordinary skill in the art, extra feature structure and advantage are will be partly apparent or recognize by putting into practice herein described execution mode (comprising subsequently embodiment, claims and accompanying drawing) from describe.
Should be understood that preamble general description and two kinds of general introduction or frameworks that all propose execution mode and be intended to be provided for understand character and the characteristic of disclosure case of embodiment hereinafter.Comprise accompanying drawing so that further understanding to be provided, and accompanying drawing is incorporated in this specification and is consisted of the part of this specification into.The various execution modes of graphic diagram, and together with the description principle and the operation in order to explain disclosed concept.
Description of drawings
Fig. 1 is the schematic diagram of exemplary distributed communication system based on optical fiber;
Fig. 2 is the more detailed maps of exemplary headend unit (HEU) and far-end antenna element (RAU), and described HEU and described RAU are configurable in the distributed communication system based on optical fiber of Fig. 1;
Fig. 3 is the partial cross section schematic diagram of exemplary building infrastructure, and the distributed communication system based on optical fiber among Fig. 1 can be used in the described building infrastructure;
Fig. 4 is the schematic diagram of illustrative embodiments, and described execution mode is provided to digital data service based on the RAU in the distributed communication system of optical fiber by downlink optical fiber and the uplink optical fiber of separating with the optical fiber that radio frequency (RF) communication service is provided;
Fig. 5 is for being used for the figure based on the exemplary headend medium converter (HMC) of the distributed communication system of optical fiber of Fig. 4, described system contains digital media converter (DMC), described DMC is through arranging so that electric digital signal is converted to optical digital signal, and vice versa;
Fig. 6 is the figure for the exemplary DMC of the HMC of Fig. 5;
Fig. 7 is the schematic diagram of exemplary building infrastructure, and in described building infrastructure, digital data service and RF communication service are provided in the distributed communication system based on optical fiber;
Fig. 8 is the schematic diagram of exemplary RAU, and described RAU can be used for providing in the distributed communication system based on optical fiber of exemplary digital data, services and RF communication service;
Fig. 9 is the schematic diagram of another illustrative embodiments, described execution mode by the downlink optical fiber of separating with the RF communication service and uplink optical fiber to providing digital data service based on the RAU in the distributed communication system of optical fiber;
Figure 10 A is the schematic diagram of illustrative embodiments, and described execution mode uses wavelength division multiplexing (WDM) to come multiplexing digital data service and RF communication service by downlink optical fiber and uplink optical fiber with different wave length in based on the distributed communication system of optical fiber;
Figure 10 B is the schematic diagram of illustrative embodiments, and it is each channel multiplexing uplink communication and downlink communication that described execution mode uses WDM by optical fiber commonly used;
Figure 11 is the schematic diagram of another illustrative embodiments, and described execution mode uses WDM with multiplexing digital data service and RF communication service with different wave length by downlink optical fiber commonly used and uplink optical fiber commonly used in the HEU of colocated and HMC in based on the distributed communication system of optical fiber;
Figure 12 is the schematic diagram of another illustrative embodiments, and described execution mode uses WDM with multiplexing digital data service and RF communication service by downlink optical fiber commonly used and uplink optical fiber commonly used in shell HEU commonly used and MC with different wave length in based on the distributed communication system of optical fiber;
Figure 13 is the schematic diagram of another illustrative embodiments, and described execution mode uses frequency division multiplexing (FDM) to come multiplexing digital data service and RF communication service by downlink optical fiber and uplink optical fiber with different frequency in based on the distributed communication system of optical fiber; And
Figure 14 is the schematic diagram of another illustrative embodiments, and described execution mode comes multiplexing digital data service and RF communication service with different frequency and different wave length with FDM and WDM by downlink optical fiber and uplink optical fiber in based on the distributed communication system of optical fiber.
Embodiment
Now with detailed reference implementation mode, the example of described execution mode is illustrated in the drawings, diagram part in described accompanying drawing (but not all) execution mode.Certainly, concept is can be many multi-form presents and should not be construed as in this article restriction; On the contrary, provide these execution modes so that disclosure case will satisfy applicable legal requiremnt.As possible, the similar elements symbol will be in order to indicate same components or part.
Disclosed execution mode comprises the distributed communication system based on optical fiber in the embodiment, and described system provides and support two kinds of radio frequency (RF) communication service and digital data service.RF communication service and digital data service can arrive client terminal device by fiber distribution, for example, and the far-end antenna element.For instance, the unrestricted example of digital data service comprises Ethernet, WLAN, global intercommunication microwave access (WiMax), Wireless Fidelity (WiFi), Digital Subscriber Line and Long Term Evolution (LTE) etc.The fiber distribution that digital data service can be separated by the optical fiber with distribution RF communication service.Perhaps, digital data service can be distributed with the RF communication service by optical fiber commonly used.For instance, digital data service can be distributed with the RF communication service by optical fiber commonly used with different frequency with different wave length and/or via frequency division multiplexing (FDM) via wavelength division multiplexing (WDM).Being distributed in based on being used in the distributed communication system of optical fiber provides the power supply of power supply also to can be used for providing power supply to the digital data service assembly to the far-end antenna element.
With regard to this point, the exemplary distributed communication system based on optical fiber about Fig. 1 to Fig. 3 has been described, described system provides the RF communication service, and digital data service is not provided.Begin as the various execution modes of digital data service together with the RF communication service additionally are provided based on the distributed communication system of optical fiber from Fig. 4.
With regard to this point, Fig. 1 is the schematic diagram based on the execution mode of the distributed communication system of optical fiber; In this embodiment, system is the distributed communication system 10 based on optical fiber, described system 10 forms one or more antenna coverage areas through arranging, and described antenna coverage areas is used for communicating by letter with the wireless client device foundation of the radio frequency that is positioned at antenna coverage areas (RF) scope.Distributed communication system 10 based on optical fiber provides RF communication service (for example, cellular service).In this embodiment, comprise front end unit (HEU) 12, one or more far-end antenna element (RAU) 14 and optical fiber 16 based on the distributed communication system 10 of optical fiber, described optical fiber 16 is couple to RAU 14 optically with HEU 12.HEU 12 reaches and provides described communication to RAU 14 through arranging to pass through the electric RF signal of down link 18D from one or more information source (for example, network or carrier wave) received communication.HEU 12 is also through arranging will turn back to from the communication that RAU 14 receives one or more information source via the electric RF signal of up link 18U.With regard to this point, in this embodiment, optical fiber 16 comprises in order at least one downlink optical fiber 16D that will be carried to from the signal that HEU 12 transmits RAU 14 with in order to will carry back from the signal that RAU 14 transmits at least one uplink optical fiber 16U of HEU 12.
Distributed communication system 10 based on optical fiber has antenna coverage areas 20, and described antenna coverage areas 20 can be roughly centered by RAU 14.The antenna coverage areas 20 of RAU 14 forms RF overlay area 21.HEU 12 is applicable to carry out or promotes some optical fiber radios (RoF) to use any one application in (for example, radio frequency (RF) identification (RFID), wireless lan (wlan) communication or cell phone service).Client terminal device 24 is presented in the antenna coverage areas 20 with the form of (for example) mobile device, and for example, described mobile device can be cell phone.Client terminal device 24 can be any device that can receive the RF signal of communication.Client terminal device 24 for example comprises antenna 26(, wireless network card), described antenna 26 is applicable to receive and/or sends electromagnetism RF signal.
Continuation is with reference to figure 1, for by downlink optical fiber 16D electric RF signal being sent to RAU 14, and then is sent to the client terminal device 24 in the antenna coverage areas 20 that is formed by RAU 14, and HEU 12 comprises that electricity is to light (E/O) transducer 28.E/O transducer 28 is converted to the electric RF signal of down link 18D the down link optics RF signal 22D that is transmitted by downlink optical fiber 16D.RAU 14 comprises that light is to electricity (O/E) transducer 30, described O/E transducer 30 converts back electric RF signal in order to the down link optics RF signal 22D that will receive, and described electric RF signal wirelessly is sent to the client terminal device 24 that is arranged in antenna coverage areas 20 with the antenna 32 by RAU 14.
Similarly, antenna 32 also receives wireless RF communication through arranging with the client terminal device 24 from antenna coverage areas 20.With regard to this point, antenna 32 will represent also that from client terminal device 24 reception wireless RF communication the electric RF signal of wireless RF communication is sent to the E/O transducer 34 the RAU 14.E/O transducer 34 is converted to up link optics RF signal 22U with electric RF signal, and described up link optics RF signal 22U is to transmit by uplink optical fiber 16U.The O/E transducer 36 that is provided among the HEU 12 is converted to the electric RF signal of up link with up link optics RF signal 22U, and the electric RF signal of described up link then can be used as the electric RF signal of up link 18U and sends back network or other information source.In this embodiment, HEU 12 can not identify the position of the client terminal device 24 in this execution mode.Client terminal device 24 can be in the scope of any antenna coverage areas 20 that is formed by RAU 14.
Fig. 2 is the more detailed maps of the exemplary distributed communication system based on optical fiber of Fig. 1, and described system is for specific RF service or use electric RF service signal is provided.In the exemplary embodiment, HEU 12 comprises service unit 37, and described service unit 37 transmits (or regulate and then transmit) electric RF service signal by network link 39 from one or more external network 38 described signal is provided.In certain exemplary embodiments, this situation comprises that the WLAN signal that provides by specifying (that is, from 2.4 to 2.5 gigahertzs (GHz) and in 5.0 to 6.0GHz frequency range) in Institute for Electrical and Electronics Engineers 802.11 standards distributes.Any other electric RF signal frequency is possible.In another illustrative embodiments, service unit 37 provides electric RF service signal by direct generation signal.In another illustrative embodiments, the transmission of the electric RF service signal between the client terminal device 24 that service unit 37 is coordinated in the antenna coverage areas 20.
Continuation is with reference to figure 2, and service unit 37 is conductively coupled to E-O transducer 28, and described E-O transducer 28 is converted to corresponding down link optics RF signal 22D from service unit 37 receiving downlinks electric RF signal 18D and with described signal.In the exemplary embodiment, E-O transducer 28 comprises laser, described laser is applicable to transmit enough dynamic ranges of using for described RoF herein, and, described E-O transducer 28 comprises laser driver/amplifier alternatively, and described laser driver/amplifier electric is couple to laser.The example that is applicable to the laser of E-O transducer 28 includes, but is not limited to laser diode, distributes feedback (DFB) laser, Fabry-Perot (FP) laser and Vcsel (VCSEL).
Continuation is with reference to figure 2, and HEU 12 also comprises O-E transducer 36, and described O-E transducer 36 is conductively coupled to service unit 37.O-E transducer 36 receiving uplink optics RF signal 22U also are converted to the electric RF signal of corresponding up link 18U with described signal.In the exemplary embodiment, O-E transducer 36 is photodetector or the photodetector that is conductively coupled to linear amplifier.As shown in Figure 2, E-O transducer 28 and O-E transducer 36 consists of " transducer to " 35.
According to illustrative embodiments, the service unit 37 among the HEU 12 can comprise the RF signal modulator/demodulator unit 40 for difference modulating/demodulating down link electric RF signal 18D and the electric RF signal of up link 18U.Service unit 37 can comprise digital signal processing unit (" digital signal processor ") 42, described digital signal processor 42 is used for providing the signal of telecommunication to RF signal modulator/demodulator unit 40, and the described signal of telecommunication is modulated on the RF carrier wave to produce the electric RF signal of required down link 18D.Digital signal processor 42 is also through arranging to process the restituted signal that is provided by the electric RF signal of demodulation up link 18U by RF signal modulator/demodulator unit 40.HEU 12 also can comprise for the treatment of data and the other optional CPU (CPU) 44 of actuating logic and calculating operation, and is used for the memory cell 46 of the storage data data of WLAN or other Internet Transmission (for example, by).
Continuation is with reference to figure 2, and RAU 14 comprises that also the transducer that comprises O-E transducer 30 and E-O transducer 34 is to 48.O-E transducer 30 will convert back the electric RF signal of down link 50D from the down link optics RF signal 22D that HEU 12 receives.E-O transducer 34 will be converted to the up link optics RF signal 22U that is sent to HEU 12 from the electric RF signal of the up link that client terminal device 24 receives 50U.O-E transducer 30 and E-O transducer 34 via RF signal guide element 52(for example, circulator) be conductively coupled to antenna 32.As described below, RF signal guide element 52 is in order to guide down link electric RF signal 50D and the electric RF signal of up link 50U.According to illustrative embodiments, antenna 32 can comprise one or more paster antenna, the U.S. patent application case the 11/504th of " the Radio-over-FiberTransponder With A Dual-Band Patch Antenna System " by name that for example applied on August 16th, 2006, " Centralized Optical Fiber-BasedWireless Picocellular Systems and Methods " U.S. patent application case the 11/451st by name of No. 999 and on June 12nd, 2006 application, disclosed paster antenna in No. 553, the full text of above-mentioned two application cases all is incorporated herein by reference.
Continuation is with reference to figure 2, also comprises power supply unit 54 based on the distributed communication system 10 of optical fiber, and described power supply unit 54 produces electric power signals 56.Described power supply unit 54 is conductively coupled to HEU 12 and thinks that the power consumption element among the described HEU 12 charges.In the exemplary embodiment, unless running through HEU 12 and extend to RAU 14, power line 58 thinks that transducer is passive device to O-E transducer 30 and E-O transducer 34, optional RF signal guide element 52(RF signal guide element 52 in 48, circulator) and any other power consumption element charging that provides for example.In the exemplary embodiment, power line 58 comprises two electric wires 60 and 62, and described two electric wires 60 and 62 carry single channel voltage and are conductively coupled to DC power supply changeover device 64 at RAU 14 places.DC power supply changeover device 64 is conductively coupled to transducer to O-E transducer 30 and E-O transducer 34 in 48, and described DC power supply changeover device 64 becomes one or more required power level of power consumption assembly among the RAU 14 with one or more voltage level of electric power signal 56.In the exemplary embodiment, DC power supply changeover device 64 is DC/DC power supply changeover device or AC/DC power supply changeover device, decides on the type of the electric power signal 56 that carried by power line 58.In another illustrative embodiments, power line 58(dotted line) directly from power supply unit 54(rather than from HEU 12 or by HEU 12) extend to RAU 14.In another illustrative embodiments, power line 58 comprises and surpasses two wires and carry multivoltage.
Can how the distributed communication system based on optical fiber be configured in indoor further exemplary graphicly for providing, Fig. 3 is provided.Fig. 3 is the partial cross section schematic diagram of use based on the building infrastructure 70 of the distributed communication system of optical fiber.System can be the distributed communication system 10 based on optical fiber of Fig. 1 and Fig. 2.The building of any type of building infrastructure 70 general expressions, configurable in described building based on the distributed communication system 10 of optical fiber.As described in preamble Fig. 1 and Fig. 2, for example, merging HEU 12 based on the distributed communication system 10 of optical fiber provides various types of communication services with the overlay areas in building infrastructure 70.For instance, following described in more detail, in this embodiment, based on the distributed communication system 10 of optical fiber through arranging to receive the wireless RF signal and the RF signal being converted to the RoF signal that is sent to a plurality of RAU 14 by optical fiber 16.In this embodiment, the distributed communication system 10 based on optical fiber can be (for example) provides wireless service in building infrastructure 70 indoor distributed antenna system (IDAS).For example, these wireless signals can comprise wireless service, Wireless Fidelity (WiFi), Local Area Network, WLAN and the above-mentioned every combination that cellular service, for example RFID follow the tracks of.
Continuation is with reference to figure 3, and in this embodiment, building infrastructure 70 comprises first (ground) floor 72, the second floor 74 and third story layer 76.In building infrastructure 70, provide antenna coverage areas 80 to come service floor 72,74,76 by HEU 12 by main frame 78.For simplicity, only illustrate floor 72,74,76 ceiling among Fig. 3.In the exemplary embodiment, trunk cable 82 has some different pieces, and described different piece promotes the layout of a large amount of RAU 14 in building infrastructure 70.The overlay area of each RAU 14 and then service self in antenna coverage areas 80.Trunk cable 82 can comprise (for example) riser cable 84, and described riser cable 84 is carried to all downlink optical fiber 16D and uplink optical fiber 16U HEU 12 and carries all optical fiber from described HEU 12.Riser cable 84 can pass through interconnecting unit (ICU) 85 routes.ICU 85 can be provided as the part of the power supply unit 54 among Fig. 2 or separate with described power supply unit 54.ICU 85 also can be through arranging to be provided at via (as shown in Figure 2 and as mentioned above) in the array cable 87 and providing power supply with the power line 58 that downlink optical fiber 16D and uplink optical fiber 16U are assigned to RAU 14 to RAU 14.Trunk cable 82 can comprise one or more many cables (MC) connector, and downlink optical fiber 16D and uplink optical fiber 16U that described MC connector is applicable to select are connected to some fiber optic cables 86 together with power line.
Trunk cable 82 can distribute a plurality of fiber optic cables 86 for example to spread all over building infrastructure 70(, be fixed to each floor 72,74,76 ceiling or other support surface), think that the first floor 72, the second floor 74 and third story layer 76 provide antenna coverage areas 80.In the exemplary embodiment, HEU12 is positioned at building infrastructure 70 (for example, between wardrobe or control room), and in another illustrative embodiments, HEU 12 can be located at the outside of the building infrastructure 70 of remote location.Base station transmitting-receiving station (BTS) 88 can be provided by second party (for example, cellular service provider), and described BTS 88 is connected to HEU 12 and can locates with HEU 12 colocated or away from described HEU 12.BTS is any station or information source, and described station or information source provide input signal and receive inverse signal from HEU 12 to HEU 12.In the typical cellular system, for example, a plurality of BTS are configured in a plurality of remote locations and sentence and provide radio telephone to cover.Each BTS is useful to corresponding residential quarter, and, when mobile radio station enters the residential quarter, BTS and mobile station communicate.Each BTS can comprise at least one wireless set, and described wireless set is used for one or more subscriber unit that operates in cell associated can be communicated by letter.
Among Fig. 1 to Fig. 3 and the above-mentioned distributed communication system 10 based on optical fiber point-to-point communication between HEU 12 and the RAU14 is provided.Each RAU 14 pair communicates by letter with HEU 12 by unique down link and uplink optical fiber, so that point-to-point communication to be provided.No matter when RAU 14 is installed in the distributed communication system 10 based on optical fiber, RAU 14 is connected to unique down link and uplink optical fiber pair, and described optical fiber is to being connected to HEU 12.Downlink optical fiber and uplink optical fiber can be provided in the optical fiber 16.A plurality of down links and uplink optical fiber are to being provided in the fiber optic cables to serve a plurality of RAU 14 by fiber optic cables commonly used.For instance, with reference to figure 3, the RAU 14 that is installed on the given floor 72,74,76 can be by same optical fiber 16 services.With regard to this point, optical fiber 16 can have a plurality of nodes, and at described Nodes, unique down link and uplink optical fiber are to being connected to given RAU 14.
May need provides two kinds of digital data service and RF communication services for client terminal device.For instance, may in building infrastructure 70, provide digital data service and RF communication service to the client terminal device that is arranged in described building infrastructure 70.Non-wireless means and wireless device can be arranged in building infrastructure 70, and described non-wireless means and wireless device are through arranging with the incoming digital data service.The example of digital data service includes, but is not limited to Ethernet, WLAN, WiMax, WiFi, DSL and LTE etc.Ethernet standard can be supported (including but not limited to) 100 megabit per seconds (Mbs) (that is, Fast Ethernet) or kilomegabit (Gb) Ethernet or 10,000,000,000 (10G) Ethernet.The example of Digital Data Set includes, but is not limited to cable service device and wireless server, WAP (wireless access point) (WAP), gateway, desktop computer, hub, switch, long haul radio head end (RRH), Base Band Unit (BBU) and femtocell.Can provide independent digital data service network, to provide digital data service to Digital Data Set.
With regard to this point, execution mode disclosed herein provides the distributed communication system based on optical fiber, two kinds of the support RF communication service of described system and digital data service.RF communication service and digital data service can arrive client terminal device by fiber distribution, for example, and the far-end antenna element.The fiber distribution that digital data service can be separated by the optical fiber with distribution RF communication service.Perhaps, digital data service can be distributed in the distributed communication system based on optical fiber with the RF communication service by optical fiber commonly used.For instance, digital data service can be distributed with the RF communication service with different frequency with different wave length and/or via frequency division multiplexing (FDM) via wavelength division multiplexing (WDM) by optical fiber commonly used.
Fig. 4 is the schematic diagram of illustrative embodiments, and described execution mode is provided to digital data service based on the RAU in the distributed communication system 90 of optical fiber by downlink optical fiber and the uplink optical fiber of separating with radio frequency (RF) communication service.Distributed communication system 90 based on optical fiber comprises some optical communication components, and described optical communication components is provided in the distributed communication system 10 based on optical fiber of Fig. 1 to Fig. 3.Common component symbol with Fig. 1 to Fig. 3 among Fig. 4 illustrates these Common Components.As shown in Figure 4, provide HEU 12.HEU 12 is from the electric RF signal of BTS 88 receiving downlinks 18D.As mentioned above, HEU 12 is converted to the electric RF signal of down link 18D the down link optics RF signal 22D that is assigned to RAU 14.HEU 12 also is provided to BTS 88 and is provided to the electric RF signal of up link 18U on the network 93 that is connected to BTS 88 through arranging to be converted to the up link optics RF signal 22U that will receive from RAU 14.Can provide terminal block 92 with receiving downlink optical fiber 16D and uplink optical fiber 16U, described downlink optical fiber 16D and uplink optical fiber 16U are through arranging to carry down link optics RF signal 22D and up link optics RF signal 22U.Reach as mentioned above shown in Fig. 3, downlink optical fiber 16D and uplink optical fiber 16U can be bundled in together in one or more riser cable 84 and can be provided to one or more ICU 85.
For providing digital data service in the distributed communication system 90 based on optical fiber in this embodiment, in this example, provide the digital data service controller with the form of front end medium converter (HMC) 94 (being also referred to as " DDS controller ").DDS controller 94 can include only the additional functionality that the medium converter that medium conversion facilities are provided maybe can comprise promoting digital data service.The DDS controller is controller, and described controller is through arranging to provide digital data service by communication link, interface or other communication channel or circuit, and described controller can be combination wired, wireless or two kinds.Fig. 5 illustrates the example of HMC94.HMC 94 comprises shell 95, and described shell 95 is through arranging so that digital media converter (DMC) 97 is received into digital data service switch 96 to interface, to support and to provide digital data service.For instance, digital data service switch 96 can be Ethernet switch.For example, digital data service switch 96 can be through arranging so that kilomegabit (Gb) Ethernet digital data service to be provided.DMC 97 is through arranging so that electric digital signal is converted to optical digital signal, and vice versa.DMC 97 can install (that is, not having installation and operability under required user's facilities) for HMC 94 through being set to plug and play.Fig. 6 examples shown DMC 97, described DMC 97 can be placed in the shell 95 of HMC 94.For instance, DMC 97 can comprise that Ethernet input connector or adapter are (for example, RJ-45) and optical fiber out connector or adapter (for example, LC, SC, ST, MTP).
With reference to figure 4, in this embodiment, HMC 94(is via DMC 97) through arranging by the digital cable 99 from digital data service switch 96 the electric digital signal of down link (or the electric digital data service signal of down link) 98D is converted to down link optical digital signal (or down link optical digital data, services signal) 100D, described down link optical digital signal 100D can be sent to RAU 14 by downlink optical fiber 102D.HMC 94(is via DMC 97) also through arranging to be converted to the uplink electrical destiny word signal 98U that is sent to digital data service switch 96 from RAU 14 receiving uplink optical digital signal 100U and with up link optics digital signal 100U via uplink optical fiber 102U.Like this, can be provided as digital data service based on the part of the distributed communication system 90 of optical fiber so that the digital data service except the RF communication service to be provided by optical fiber.Be positioned at accessible these digital data service of client terminal device and/or the RF communication service at RAU 94 places, decide on the setting of described client terminal device.For instance, the building infrastructure 70 of Fig. 7 pictorial image 3, but have except the illustrative example based on the digital data service the RF communication service in the distributed communication system 90 of optical fiber and digital client device, described digital data service and digital client device can be provided to client terminal device.As shown in Figure 7, the exemplary digital data, services comprises WLAN 106, femtocell 108, gateway 110, Base Band Unit (BBU) 112, long haul radio head end (RRH) 114 and server 116.
Return with reference to figure 4, in this embodiment, downlink optical fiber 102D and uplink optical fiber 102U are provided in the fiber optic cables 104, and described fiber optic cables 104 are connected with ICU 85 interfaces.ICU 85 provides common point, and the downlink optical fiber 102D and the uplink optical fiber 102U that carry digital optical signal can bundle with the downlink optical fiber 16U that carries the RF optical signalling and uplink optical fiber 16D in described common point.Can provide one or more fiber optic cables 104(to be also referred to as in this article array cable 104), described fiber optic cables 104 contain the downlink optical fiber 16D that is useful on the RF communication service and uplink optical fiber 16U and are used for downlink optical fiber 102D and the uplink optical fiber 102U of digital data service, described optical line by and be provided to RAU 14.The combination of the combination of any service or the optical fiber of any type can be provided in the array cable 104.For instance, array cable 104 can comprise monomode fiber and/or the multimode fiber for RF communication service and/or digital data service.
In U.S. patent application case the 12/466th application on May 15th, 2009 and " Power Distribution Devices; Systems; and Methods For Radio-Over-Fiber (RoF) Distributed Communication " by name, U.S. Provisional Patent Application case the 61/330th application of No. 514 (full text of this case is incorporated herein by reference) and on May 2nd, 2010 and " Power Distribution in Optical Fiber-based DistributedCommunication Systems Providing Digital Data and Radio-Frequency (RF) Communication Services; and Related Components and Methods " by name, the example of ICU is described in No. 385, described ICU can be provided at based on the distributed communication system 90 of optical fiber minute to be used in downlink optical fiber 16D and the uplink optical fiber 16U of RF communication service and to be used for downlink optical fiber 102D and the uplink optical fiber 102U of digital data service, and both full text of described application case all is incorporated herein by reference.
Continuation is with reference to figure 4, and some RAU 14 can be connected to access point (AP) 118 or support other device of digital data service.Diagram AP 118, but AP 118 can be any other device of supporting digital data service.In the example of AP, the access to the digital data service that is provided by digital data service switch 96 is provided AP 118.This is that described downlink optical fiber 102D and uplink optical fiber 102U carry by the electric digital signal 98D of down link and converted down link optical digital signal 100D and the up link optics digital signal 100U of uplink electrical destiny word signal 98U from digital data service switch 96 because downlink optical fiber 102D and uplink optical fiber 102U are provided to AP 118 via array cable 104 and RAU 14.The digital data service that the accessible AP 118 of numerical data client terminal device is provided by digital data service switch 96 with access.
The digital data service client (for example, AP) needs electric power to operate and the receiving digital data service.By the part of digital data service conduct based on the distributed communication system of optical fiber is provided, the electric power that is assigned to based on the RAU in the distributed communication system of optical fiber also can be used to provide power supply for the digital data service client.With provide independent power supply relative for the digital data service client, this can be the easily method that power supply is provided to the digital data service client.For instance, by or the power supply that relies on ICU 85 to be assigned to the RAU 14 among Fig. 4 also can be used to provide power supply to the AP 118 that is arranged in based on RAU 14 places of the distributed communication system 90 of optical fiber.With regard to this point, ICU 85 can think that RAU 14 and AP 118 provide power supply through setting.Power supply unit can be positioned at ICU 85, but also can be positioned at the outside of ICU 85, and described power supply unit can provide by power line 120, as shown in Figure 4.ICU 85 can receive interchange (AC) electricity or direct current (DC) electricity.ICU 85 can receive 110 volts (V) to AC electricity or the DC electricity of 240V.ICU 85 can be through arranging to produce any required voltage level and power level.Power level take the quantity of RAU 14 and by RAU 14 and the anticipated load of any digital device support that is connected to the RAU 14 among Fig. 4 as the basis.May further wish in ICU 85, to provide the additional power supply characteristics of management.For instance, can provide one or more voltage protection circuit.
Fig. 8 is the schematic diagram of the exemplary intraware among the RAU 14 of Fig. 4, is used for the downlink optical fiber 16D of RF communication and uplink optical fiber 16D, the downlink optical fiber 102D that is used for digital data service and uplink optical fiber 102U and electric power with further diagram and how is provided to RAU 14 and can how be distributed in RAU 14.As shown in Figure 8, diagram array cable 104, described array cable 104 contain the downlink optical fiber 16D that is useful on RF communication and uplink optical fiber 16D, the downlink optical fiber 102D that is used for digital data service and uplink optical fiber 102U and see in addition Fig. 2 from the power line 58(that ICU 85 carries power supply).About as described in Fig. 2, power line 58 can comprise two wires 60,62 such as preamble, and described two wires 60,62 can be (for example) copper cash.
Be used for the shell 124 that the downlink optical fiber 16D of RF communication and uplink optical fiber 16U, the downlink optical fiber 102D that is used for digital data service and uplink optical fiber 102U and power line 58 enter RAU 14.Also reach as shown in Figure 2 preamble described, the downlink optical fiber 16D and the uplink optical fiber 16U that are used for RF communication are routed to respectively O-E transducer 30 and E-O transducer 34, and are routed to antenna 32.Be used for the digital data service interface 126 that the downlink optical fiber 102D of digital data service and uplink optical fiber 102U are routed to be provided as the part of RAU 14, so that the access of digital data service to be provided via port one 28, described port one 28 will be described in more detail below.Power line 58 carrying power supplys, described power supply thinks that through setting O-E transducer 30 and E-O transducer 34 provide power supply and provide power supply for digital data service interface 126.With regard to this point, power line 58 is couple to voltage controller 130, described voltage controller 130 is regulated correct voltages and for O-E transducer 30 and E-O transducer 34 provide described correct voltage, and provides described correct voltage for other circuit among digital data service interface 126 and the RAU 14.
In this embodiment, digital data service interface 126 is through arranging that the down link optical digital signal 100D on the downlink optical fiber 102D is converted to the electric digital signal 132D of down link, and the electric digital signal 132D of described down link can be via port one 28 accesses.Also through arranging being converted to up link optics digital signal 100U by the uplink electrical destiny word signal 132U that port one 28 receives, described up link optics digital signal 100U will provide back HMC 94(to see Fig. 4 to digital data service interface 126).With regard to this point, medium converter 134 is provided in the digital data service interface 126, so that these conversions to be provided.Medium converter 134 contains O-E digital quantizer 136, so that the down link optical digital signal 100D on the downlink optical fiber 102D is converted to the electric digital signal 132D of down link.Medium converter 134 also contains E-O digital quantizer 138, and being converted to up link optics digital signal 100U by the uplink electrical destiny word signal 132U that port one 28 receives, described up link optics digital signal 100U will provide back HMC 94.With regard to this point, be provided to digital data service interface 126 from the power supply of power line 58, to provide power supply to O-E digital quantizer 136 and E-O digital quantizer 138.
Because electric power is provided to RAU 14 and digital data service interface 126, this is also for providing power supply that chance is provided via port one 28 to the digital device that is connected to RAU 14.With regard to this point, as shown in Figure 8, power interface 140 also is provided in the digital data service interface 126.Power interface 140 is through arranging to receive power supplys via voltage controller 130 from power line 58, and described power interface 140 also through arranging so that power supply can be by port one 28 accesses.By this way, if client terminal device contains compatible connector to be connected to port one 28, so not only can be accessed by digital data service, and also can be by same port 128 accesses from the power supply of power line 58.Perhaps, power interface 140 can be couple to the port that separates with the port 28 that is used for digital data service.
For instance, if provide digital data service by Ethernet, power interface 140 can be provided as Power over Ethernet (PoE) interface so.For example, port one 28 can be through arranging to receive and the RJ-45 ethernet connector of PoE compatibility.By this way, the ethernet connector that is connected in the port one 28 can also can be linked into HMC 94 from downlink optical fiber 102D and uplink optical fiber 102U with described Ethernet digital data service to HMC94 with Ethernet digital data service access downlink optical fiber 102D and uplink optical fiber 102U, and the described ethernet connector power supply that can also be distributed by ICU 85 by array cable 104 access, described array cable 104 is provided by power line 58.
Further, HEU 12 can comprise with the communication by HEU 12 supports the low order control and management to medium converter 134.For instance, medium converter 134 can report to HEU 12 with performance data (for example, energising, reception optical digital data etc.) by uplink optical fiber 16U, and described uplink optical fiber 16U carries communication service.RAU 14 can comprise microprocessor, and described microprocessor is communicated by letter with medium converter 134, to receive described data and by uplink optical fiber 16U described data to be sent to HEU 12.
Other is arranged on and provides digital data service in the distributed communication system based on optical fiber is possible.For instance, Fig. 9 is the schematic diagram of another illustrative embodiments, and described execution mode provides digital data service in the distributed communication system based on optical fiber, and described system is through arranging so that the RF communication service to be provided.With regard to this point, Fig. 9 provides the distributed communication system 150 based on optical fiber.Based on the distributed communication system 150 of optical fiber can with Fig. 4 in the distributed communication system 90 based on optical fiber similar, and can comprise be provided among Fig. 4 based on the Common Component in the distributed communication system 90 of optical fiber.In this embodiment, HMC 94 and HEU 12 colocated, rather than HMC 94 and providing that HEU 12 separates.Be used for providing the downlink optical fiber 102D of digital data service and uplink optical fiber 102U to be also connected to terminal block 92 from digital data service switch 96.Similar with Fig. 2, the downlink optical fiber 16D that is used for RF communication and uplink optical fiber 16U and then be routed to ICU 85 for downlink optical fiber 102D and the up link optics 102U of digital data service.
The downlink optical fiber 16D that is used for RF communication and uplink optical fiber 16U and be used for the downlink optical fiber 102D of digital data service and up link optics 102U can be provided at and commonly uses fiber optic cables or be provided at the fiber optic cables that separate.Further, as shown in Figure 9, independent media's transducer (MC) 141 can provide dividually with RAU 14, and replacing integrally provides with RAU 14, as shown in Figure 4.Independent MC 141 can be through arranging to contain assembly, described assembly be provided at Fig. 8 in digital data service interface 126 in assembly identical, comprise medium converter 134.AP 118 also can comprise antenna 152 separately, providing the wireless digital data, services by RAU 14, replaces the cable service that provides by port one 28 or except the cable service that provides by port one 28.
Figure 10 A is the schematic diagram of another illustrative embodiments, and described execution mode provides digital data service in the distributed communication system based on optical fiber.With regard to this point, Figure 10 A provides the distributed communication system 160 based on optical fiber.Based on the distributed communication system 160 of optical fiber can with Fig. 4 in distributed communication system 90 and the distributed communication system 150 based on optical fiber among Fig. 9 based on optical fiber similar, and can comprise be provided among Fig. 4 based among the distributed communication system 90 of optical fiber and Fig. 9 based on the Common Component in the distributed communication system 150 of optical fiber.
In this embodiment, as shown in Figure 10 A, wavelength division multiplexing (WDM) is in order to pass through based on the downlink optical fiber 162D(1-N in the distributed communication system 160 of optical fiber) and uplink optical fiber 162U(1-N) with different wave length together multiplexing digital data service and RF communication service." 1-N " down link and uplink optical fiber are to being provided to ICU 85, to be assigned to RAU 14 and independent MC 141.Multiplexing technique can be used to further reduce the cost that digital data service covers.By using WDM, digital data signal transmits at the optical fiber identical with the RF signal of communication, but transmits with different wave length.Being positioned at the media conversion filter that separates and the WDM filter that transmission location and receiving position (for example, HMC 96 and RAU 14) locate can be used to receive signal with required wavelength.
In HMC 94 and the HEU 12 colocated distributed communication system 160 based on optical fiber in Figure 10 A.A plurality of wavelength division multiplexer 164(1 are provided) to 164(N), each wavelength division multiplexer 164(1) to 164(N) multiplexing at one or more downlink optical fiber 162D(1-N commonly used together) and on one or more down link optics RF signal 22D that is used for RF communication and be used for one or more down link optical digital signal 100D of digital data service.Similarly, a plurality of Wave decomposing multiplexer 168(1 are provided) to 168(N) (for example, filter), each Wave decomposing multiplexer 168(1) to 168(N) one or more up link optics of demultiplexing RF signal 22U with from one or more uplink optical fiber 162U(1-N commonly used) one or more up link optics digital signal 100U, so that up link optics RF signal 22U is provided to HEU 12 and up link optics digital signal 100U is provided to HMC 94.Wave Decomposition multiplexing (WDD) and WDM also are used in and come demultiplexing to commonly use downlink optical fiber 162D(1-N among the RAU 14) on multiplexed down link optics RF signal 22D and down link optical digital signal 100D, and multiplexing uplink optical fiber 162U(1-N commonly used) on up link optics RF signal 22U and up link optics digital signal 100U.
Figure 10 B is the schematic diagram of another illustrative embodiments, and described execution mode provides digital data service in the distributed communication system 160' based on optical fiber.Identical with the distributed communication system 160 based on optical fiber among Figure 10 A based on the distributed communication system 160' of optical fiber among Figure 10 B, difference is, WDM is used for by optical fiber commonly used with the multiplexing uplink communication service of different wave length and downlink communication service, and described optical fiber commonly used comprises downlink optical fiber 162D(1-N) and uplink optical fiber 162U(1-N) two kinds.
Figure 11 is the schematic diagram of another illustrative embodiments, and described execution mode provides digital data service in the distributed communication system based on optical fiber.As shown in Figure 11, provide the distributed communication system 170 based on optical fiber, described system 170 also can provide digital data service.Wavelength division multiplexer 172 is provided, one or more the downlink optical fiber 162D(1-N commonly used that provides among wavelength division multiplexing together such as Figure 10 A is provided) on one or more down link optics RF signal 22D that is used for RF communication and be used for one or more down link optical digital signal 100D of digital data service.Wavelength division multiplexer 172 is multiplexed into single downlink optical fiber 174D with all down link optics RF signal 22D and all down link optical digital signal 100D.Similarly, provide Wave decomposing multiplexer 176 with by all up link optics RF signal 22U of required wavelength (de) multiplexing and all up link optics digital signal 100U from uplink optical fiber 174U commonly used.Wave decomposing multiplexer 175 and wavelength division multiplexer 177 also are used in respectively among the ICU 85 down link optics RF signal 22D and the up link optics digital signal 100U with the wavelength division multiplexing of demultiplexing on down link optics 174D commonly used, and up link optics RF signal 22U and the up link optics digital signal 100U of wavelength division multiplexing on uplink optical fiber 174U commonly used.
Perhaps, WDD and WDM also can be used among the RAU 14 down link optics RF signal 22D and the down link optical digital signal 100D with the wavelength division multiplexing of demultiplexing on down link optics 174D commonly used, and up link optics RF signal 22U and the up link optics digital signal 100U of wavelength division multiplexing on uplink optical fiber 174U commonly used.In this alternate embodiments, in the situation that WDM signal commonly used can the daisy chain setting be assigned to RAU 14 from RAU 14, can carry out demultiplexing at RAU 14 places.Perhaps, optical splitter can be used on the bursting point place in the fiber optic cables 104.
Figure 12 is the schematic diagram of another illustrative embodiments, and described execution mode provides digital data service in the distributed communication system based on optical fiber.As shown in Figure 12, provide the distributed communication system 180 based on optical fiber, described system 180 also can provide digital data service.Identical with the distributed communication system 170 based on optical fiber among Figure 11 based on the distributed communication system 180 of optical fiber, difference is, HEU12 and HMC 94 are provided in the shell 182 commonly used, and described shell 182 is also taken in wavelength division multiplexer 172 and Wave decomposing multiplexer 176.Perhaps, be provided at equally Figure 10 A(164(1-N) and 168(1-N)) in a plurality of wavelength division multiplexers and a plurality of Wave decomposing multiplexer can be provided in the shell 182 commonly used.
Figure 13 is the schematic diagram based on another illustrative embodiments of the distributed communication system of optical fiber, and described system provides digital data service.As shown in Figure 13, provide distributed communication system 190 based on optical fiber.In this embodiment, frequency division multiplexing (FDM) is used for serving and the RF communication service with the different frequency multiplexing digital data by downlink optical fiber and uplink optical fiber.Use the advantage of FDM to be: the E-O transducer can be used for RF signal of communication and digital data signal are converted to separately optical signalling simultaneously.Therefore, can avoid for the additional media transducer that electric digital signal is converted to optical digital signal to reduce complexity and to save cost.For instance, Fast Ethernet (for example, 100 megabit per seconds (Mbs)) can be lower than cellular frequency spectrum (for example, being lower than 700MHz) transmission.Can in described frequency range, transmit simultaneously and surpass (a 1) channel.
With regard to this point, 94 two kinds of HEU 12 and HEC are placed in the shell 182 commonly used, as shown in Figure 13.A plurality of frequency division multiplexing device 192(1-N) be provided in the shell 182 commonly used, and, each frequency division multiplexing device 192(1-N) through arrange with before optical transition with the different frequency electric digital signal 98D of multiplexing one or more down link and the electric RF signal of one or more down link 18D.By this way, after optical transition, downlink optical fiber link 194D(1-N commonly used) can carry at same downlink optical fiber 194D(1-N) on down link optics RF signal 22D and the down link optical digital signal 102D of frequency division multiplexing.Similarly, a plurality of frequency division demodulation multiplexer 196(1-N) be provided in the shell 182 commonly used with demultiplexing uplink optical fiber 194U(1-N) on up link optics RF signal 22U and up link optics digital signal 100U.Frequency division demultiplexing (FDD) and FDM also are used among the RAU 14.FDD is used among the RAU 14, with down link electric RF signal 18D and the electric digital signal 98D of down link of demultiplexing frequency division multiplexing after being converted to electric signal from the optical signalling from downlink optical fiber 174D commonly used.FDM also is provided among the RAU 14 with the electric signal of up link among the frequency division multiplexing RAU 14 before being converted to the up link optics RF signal 22U that is provided on the uplink optical fiber 174U commonly used and up link optics digital signal 100U.
Figure 14 is the schematic diagram based on another illustrative embodiments of the distributed communication system of optical fiber, two kinds of the described employing WDM of system and FDM.With regard to this point, Figure 14 diagram is based on the distributed communication system 200 of optical fiber.Based on the distributed communication system 200 of optical fiber adopt Figure 12 based on the WDM of the distributed communication system 180 of optical fiber and WDD FDM and the FDD based on the distributed communication system 190 of optical fiber together with Figure 13.The down link signal of wavelength division multiplexing and the down link signal of frequency division multiplexing provide by downlink optical fiber 202D.The uplink signal of wavelength division multiplexing and the uplink signal of frequency division multiplexing provide by uplink optical fiber 202U.
Option and alternative can be provided for above-mentioned execution mode.The digital data service interface that is provided among RAU or the independent MC can comprise above a numerical data serve port.For instance, with reference to Figure 14, switch 203(for example, Ethernet switch) can be placed among the RAU 14 RAU 14 that can support to surpass a numerical data serve port to provide.HMC can have integrated Ethernet switch, so that (for example) several AP can be attached in the star-like architecture via cable (for example, 5/6/7 class cable).EtherChannel can be used for control, the management and/or communication objective based on the distributed communication system of optical fiber and Ethernet media conversion layer.HMC can be single channel scheme or multichannel (for example, ten two (12) channels) scheme.The comparable single channel scheme of each channel of multichannel scheme is cheap.Further, except optical fiber, uplink electrical destiny word signal and the electric digital signal of down link can provide by medium (comprising (for example) conduction wire communication and/or radio communication).
Provide FDM when avoiding interference near the frequency of the frequency of digital data signal when the RF signal of communication has too, change under conversion or the frequency on the frequency of utilization.When the digital baseband transmission of the baseband digital data signal of the frequency spectrum that can consider to be lower than the RF signal of communication, the intermodulation distortion that can produce the RF signal of communication.Other method may further comprise the steps: with the frequency that is higher than the RF signal of communication converting digital data-signal that makes progress, and also will (for example) constant envelope modulation form be used for digital data signal and modulate.Frequency shift keying (FSK) and minimum shift keying (MSK) are modulated to the example that is applicable to described modulation format.Further, in the situation of the FDM that is used for digital data service, can consider that advanced modulation formats is to transmit with high data rate (for example, one (1) Gb, or ten (10) Gb) by the optical fiber identical with the RF signal of communication.It is possible using the kinds of schemes of (having (for example) 8-FSK or 16-QAM) single carrier or multicarrier (OFDM).
Further, as used herein, term " fiber optic cables " and/or " optical fiber " are intended to comprise all types of single modes and multimode lightguide, comprise one or more optical fiber, but described optical fiber plated film, colouring, buffering, one-tenth band and/or have other institutional framework or safeguard structure in the cable, for example, one or more pipe, strength member, outer cover etc.Optical fiber disclosed herein can be monomode fiber or multimode fiber.Similarly, the suitable optical fiber of other type comprises crooked non-sensitive optical fiber or is used for any other emergent thing of the medium of transmitting optical signal.Crooked example non-sensitive or anti-curved fiber is to buy from Corning Incorporated.
Figure BDA00002418087800201
Multimode fiber.For example, disclose the suitable optical fiber of described type in U.S. patent application case No. 2008/0166094 and No. 2009/0169163, the full text of the open case of above-mentioned application case is incorporated herein by reference.
The execution mode those skilled in the art will expect herein many modifications and other execution mode of described execution mode, and the execution mode under described modification and other execution mode is of value to the teaching that presents in preamble description and the correlative type.Therefore, should be understood that specification and claims are not limited to disclosed specific implementations, and, revise with other execution mode and be intended to be included in the scope of additional claims.If the modifications and variations of execution mode are in the scope of the equivalent of additional claims and additional claims, execution mode is intended to contain the modifications and variations of described execution mode so.Although adopt particular term herein, described term only is used for general and descriptive sense rather than for the purpose of restriction.

Claims (36)

1. distributing antenna system that is used for radio frequency (RF) communication service and digital data service (DDS) are assigned at least one far-end antenna element (RAU), described system comprises:
Front end unit (HEU), described HEU through arrange with:
Receive the electric RF signal of communication of at least one down link;
The electric RF signal of communication of described at least one down link is converted at least one down link optics RF signal of communication, and described at least one down link optics RF signal of communication is to be sent to described at least one RAU by at least one communication downlink;
Receive at least one up link optics RF signal of communication by at least one communication uplink from described at least one RAU; And
Described at least one up link optics RF signal of communication is converted to the electric RF signal of communication of at least one up link; And
The DDS controller, described DDS controller through arrange with:
Reception contains at least one down link optical digital signal of at least one DDS; And
By at least one second communication down link described at least one down link optical digital signal is provided to described at least one RAU.
2. distributing antenna system as claimed in claim 1, wherein said DDS controller further through arrange with:
Receive at least one up link optics digital signal by at least one second communication up link from described at least one RAU; And
Described at least one up link optics digital signal is converted at least one uplink electrical destiny word signal.
3. distributing antenna system as claimed in claim 2, wherein said DDS controller further through arrange with:
Receive at least one second up link optics digital signal by described at least one second communication up link from least one media controller (MC); And
Described at least one second up link optics digital signal is converted to described at least one second uplink electrical destiny word signal.
4. distributing antenna system as claimed in claim 1, wherein said at least one DDS is comprised of the group, and described group is comprised of Ethernet, wireless lan (wlan), global intercommunication microwave access (WiMax), Digital Subscriber Line and Long Term Evolution (LTE).
5. such as the described distributing antenna system of claim 1 to 4, wherein said DDS controller is comprised of medium converter.
6. such as the described distributing antenna system of claim 1 to 4, wherein said at least one communication downlink and described at least one communication uplink comprise optical fiber.
7. distributing antenna system as claimed in claim 1, described system further comprises interconnecting unit (ICU), described ICU through arrange with:
Receive described at least one down link optics RF signal of communication;
Receive described at least one down link optical digital signal;
Provide described at least one down link optics RF signal of communication by described at least one communication downlink to described at least one RAU; And
Provide described at least one down link optical digital signal by described at least one second communication down link to described at least one RAU.
8. distributing antenna system as claimed in claim 2, described system further comprises interconnecting unit (ICU), described ICU through arrange with:
Receive described at least one up link optics RF signal of communication by described at least one communication uplink from described at least one RAU;
Provide described at least one up link optics RF signal of communication to described HEU;
Receive described at least one up link optics digital signal by described at least one second communication up link from described at least one RAU; And
Provide described at least one up link optics digital signal to described DDS controller.
9. distributing antenna system as claimed in claim 8, wherein said ICU further through arrange with:
Provide described at least one up link optics RF signal of communication to described HEU; And
Provide described at least one up link optics digital signal to described DDS controller.
10. distributing antenna system as claimed in claim 1, described system further comprises at least one wavelength division multiplexer (WDM), and described at least one WDM is through arranging to come described at least one the down link optics RF signal of communication of wavelength division multiplexing and described at least one down link optical digital signal by at least one optical fiber communication down link with different wave length.
11. distributing antenna system as claimed in claim 10, described system further comprises at least one Wave decomposing multiplexer (WDD), described at least one WDD is associated with described at least one RAU and through arranging that described at least one down link optics RF signal of communication is separated with described at least one down link optical digital signal, described at least one down link optical digital signal receives by described at least one communication downlink.
12. distributing antenna system as claimed in claim 2, described system further comprises at least one Wave decomposing multiplexer (WDM), and described at least one WDM is associated with described at least one RAU and through arranging to come described at least one the up link optics RF signal of communication of wavelength division multiplexing and described at least one up link optics digital signal by described at least one communication uplink with different wave length.
13. distributing antenna system as claimed in claim 12, described system further comprises at least one Wave decomposing multiplexer (WDD), described at least one WDD is through arranging that described at least one up link optics RF signal of communication and described at least one up link optics digital signal are separated, and described at least one up link optics digital signal receives by described at least one communication uplink.
14. distributing antenna system as claimed in claim 10, described system further comprises at least one frequency division multiplexing device (FDM), and described at least one FDM is through arranging to come the electric RF signal of communication of described at least one down link of frequency division multiplexing and the electric digital signal of at least one down link by described at least one communication downlink with different frequency.
15. distributing antenna system as claimed in claim 14, described system further comprises at least one frequency division demodulation multiplexer (FDD), described at least one FDD is associated with described at least one RAU and through arranging so that the electric RF signal of communication of described at least one down link and the electric digital signal of described at least one down link are separated, the electric digital signal of described at least one down link is from described at least one communication downlink.
16. distributing antenna system as claimed in claim 12, described system further comprises at least one frequency division multiplexing device (FDM), and described at least one FDM is associated with described at least one RAU and through arranging to come the electric RF signal of communication of described at least one up link of frequency division multiplexing and described at least one uplink electrical destiny word signal by described at least one communication uplink with different frequency.
17. distributing antenna system as claimed in claim 16, described system further comprises at least one frequency division demodulation multiplexer (FDD), described at least one FDD is through arranging so that the electric RF signal of communication of described at least one up link and described at least one uplink electrical destiny word signal are separated, and described at least one uplink electrical destiny word signal is from described at least one communication uplink.
18. distributing antenna system as claimed in claim 1, described system further comprises at least one frequency division multiplexing device (FDM), and described at least one FDM is through arranging to come the electric RF signal of communication of described at least one down link of frequency division multiplexing and the electric digital signal of described at least one down link by described at least one communication downlink with different frequency.
19. distributing antenna system as claimed in claim 18, described system further comprises at least one frequency division demodulation multiplexer (FDD), described at least one FDD is associated with described at least one RAU and through arranging that described at least one down link optics RF signal of communication is separated with described at least one down link optical digital signal, described at least one down link optical digital signal receives by described at least one communication downlink.
20. distributing antenna system as claimed in claim 2, described system further comprises at least one frequency division multiplexing device (FDM), and described at least one FDM is associated with described at least one RAU and through arranging to come the electric RF signal of communication of described at least one up link of frequency division multiplexing and described at least one uplink electrical destiny word signal by described at least one communication uplink with different frequency.
21. distributing antenna system as claimed in claim 20, described system further comprises at least one frequency division demodulation multiplexer (FDD), described at least one FDD is through arranging so that the electric RF signal of communication of described at least one up link and described at least one uplink electrical destiny word signal are separated, and described at least one uplink electrical destiny word signal is from described at least one communication uplink.
22. distributing antenna system as claimed in claim 1, wherein said at least one second communication down link is comprised of at least one second optical fiber communication down link.
23. distributing antenna system as claimed in claim 2, wherein said at least one second communication up link is comprised of at least one second optical fiber communication up link.
24. a method that radio frequency (RF) communication service and digital data service (DDS) is assigned at least one the far-end antenna element (RAU) in the distributing antenna system, described method comprises following steps:
Locate to receive the electric RF signal of communication of at least one down link at front end unit (HEU);
The electric RF signal of communication of described at least one down link is converted at least one down link optics RF signal of communication, and described at least one down link optics RF signal of communication is to be sent to described at least one RAU by at least one communication downlink;
Receive at least one up link optics RF signal of communication by at least one communication uplink from described at least one RAU at described HEU place;
Described at least one up link optics RF signal of communication is converted to the electric RF signal of communication of at least one up link;
Receive at least one the down link optical digital signal that contains at least one DDS at digital data service (DDS) controller place; And
Provide described at least one down link optical digital signal by at least one second communication down link to described at least one RAU.
25. method as claimed in claim 24, described method further comprises following steps:
Receive at least one up link optics digital signal by at least one second communication up link from described at least one RAU at described DDS controller place; And
Provide at least one second up link optics digital signal to the DDS network.
26. method as claimed in claim 24, described method further comprises following steps: come described at least one the down link optics RF signal of communication of wavelength division multiplexing and described at least one down link optical digital signal by at least one optical fiber communication down link with different wave length.
27. method as claimed in claim 26, described method further comprises following steps: multiplexing described at least one the down link optics RF signal of communication of Wave Decomposition and described at least one down link optical digital signal, described at least one down link optical digital signal receives by described at least one optical fiber communication down link.
28. method as claimed in claim 24, described method further comprises following steps: come the electric RF signal of communication of described at least one down link of frequency division multiplexing and described at least one down link optical digital signal by described at least one communication downlink with different frequency.
29. method as claimed in claim 28, described method further comprises following steps: described at least one the down link optics RF signal of communication of frequency division demultiplexing and described at least one down link optical digital signal, described at least one down link optical digital signal receives by described at least one communication downlink.
30. a far-end antenna element that is used for distributing antenna system, described far-end antenna element comprises:
Light is to electricity (O-E) transducer, and described O-E transducer is converted to the electric RF signal of communication of down link and provides at least one first port as the electric RF signal of communication of described down link through arranging take down link optics radio frequency (RF) signal of communication that will receive;
Electricity is to light (E-O) transducer, and described E-O transducer is through arranging being converted to up link optics RF signal of communication from the electric RF signal of communication of up link that described at least one first port receives; With
Digital data service (DDS) interface, described DDS interface be couple at least one second port and through arrange with:
The down link optical digital signal is converted to the electric digital signal of down link to be provided to described at least one second port; And
To be converted to up link optics digital signal from the uplink electrical destiny word signal that described at least one second port receives.
31. far-end antenna element as claimed in claim 30, wherein said down link optics RF signal of communication receives by at least one first communication downlink, and described at least one first communication downlink is connected to front end unit (HEU).
32. far-end antenna element as claimed in claim 30, wherein said down link optical digital signal receives by at least one second communication down link, and described at least one second communication down link is connected to the DDS controller.
33. far-end antenna element as claimed in claim 30, wherein said DDS interface further comprises power interface, and described power interface is through arranging to receive electric power and described electric power being provided to described at least one second port.
34. far-end antenna element as claimed in claim 33, wherein said at least one second port is through arranging to support Power over Ethernet (PoE).
35. far-end antenna element as claimed in claim 34, wherein said DDS interface is through arranging to receive described electric power from power line, and described power line is provided at least one array cable.
36. far-end antenna element as claimed in claim 30, described far-end antenna element is through arranging to receive described down link optics RF signal of communication and down link digital optical signal from least one array cable.
CN201180024499.4A 2010-05-02 2011-05-02 Digital data service is provided in based on distributed radio frequency (RF) communication system of optical fiber Expired - Fee Related CN102918924B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103220760A (en) * 2013-04-24 2013-07-24 吉林大学 OW-RF fusion system and cross-domain communication method based on same

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010090999A1 (en) 2009-02-03 2010-08-12 Corning Cable Systems Llc Optical fiber-based distributed antenna systems, components, and related methods for monitoring and configuring thereof
US9673904B2 (en) 2009-02-03 2017-06-06 Corning Optical Communications LLC Optical fiber-based distributed antenna systems, components, and related methods for calibration thereof
US8280259B2 (en) 2009-11-13 2012-10-02 Corning Cable Systems Llc Radio-over-fiber (RoF) system for protocol-independent wired and/or wireless communication
US8275265B2 (en) 2010-02-15 2012-09-25 Corning Cable Systems Llc Dynamic cell bonding (DCB) for radio-over-fiber (RoF)-based networks and communication systems and related methods
US9525488B2 (en) 2010-05-02 2016-12-20 Corning Optical Communications LLC Digital data services and/or power distribution in optical fiber-based distributed communications systems providing digital data and radio frequency (RF) communications services, and related components and methods
US20110268446A1 (en) 2010-05-02 2011-11-03 Cune William P Providing digital data services in optical fiber-based distributed radio frequency (rf) communications systems, and related components and methods
CN103119865A (en) 2010-08-16 2013-05-22 康宁光缆系统有限责任公司 Remote antenna clusters and related systems, components, and methods supporting digital data signal propagation between remote antenna units
US9252874B2 (en) 2010-10-13 2016-02-02 Ccs Technology, Inc Power management for remote antenna units in distributed antenna systems
WO2012115843A1 (en) 2011-02-21 2012-08-30 Corning Cable Systems Llc Providing digital data services as electrical signals and radio-frequency (rf) communications over optical fiber in distributed communications systems, and related components and methods
EP2702710A4 (en) 2011-04-29 2014-10-29 Corning Cable Sys Llc Determining propagation delay of communications in distributed antenna systems, and related components, systems and methods
CN103609146B (en) 2011-04-29 2017-05-31 康宁光缆系统有限责任公司 For increasing the radio frequency in distributing antenna system（RF）The system of power, method and apparatus
US10110307B2 (en) 2012-03-02 2018-10-23 Corning Optical Communications LLC Optical network units (ONUs) for high bandwidth connectivity, and related components and methods
EP2842245A1 (en) 2012-04-25 2015-03-04 Corning Optical Communications LLC Distributed antenna system architectures
US9455784B2 (en) 2012-10-31 2016-09-27 Corning Optical Communications Wireless Ltd Deployable wireless infrastructures and methods of deploying wireless infrastructures
ES2931529T3 (en) 2013-08-26 2022-12-30 Commscope Technologies Llc Wave division multiplexer arrangement for small cell networks
US9357551B2 (en) 2014-05-30 2016-05-31 Corning Optical Communications Wireless Ltd Systems and methods for simultaneous sampling of serial digital data streams from multiple analog-to-digital converters (ADCS), including in distributed antenna systems
US10659163B2 (en) 2014-09-25 2020-05-19 Corning Optical Communications LLC Supporting analog remote antenna units (RAUs) in digital distributed antenna systems (DASs) using analog RAU digital adaptors
WO2016071902A1 (en) 2014-11-03 2016-05-12 Corning Optical Communications Wireless Ltd. Multi-band monopole planar antennas configured to facilitate improved radio frequency (rf) isolation in multiple-input multiple-output (mimo) antenna arrangement
WO2016075696A1 (en) 2014-11-13 2016-05-19 Corning Optical Communications Wireless Ltd. Analog distributed antenna systems (dass) supporting distribution of digital communications signals interfaced from a digital signal source and analog radio frequency (rf) communications signals
EP3235336A1 (en) 2014-12-18 2017-10-25 Corning Optical Communications Wireless Ltd. Digital interface modules (dims) for flexibly distributing digital and/or analog communications signals in wide-area analog distributed antenna systems (dass)
WO2016098111A1 (en) 2014-12-18 2016-06-23 Corning Optical Communications Wireless Ltd. Digital- analog interface modules (da!ms) for flexibly.distributing digital and/or analog communications signals in wide-area analog distributed antenna systems (dass)
US9681313B2 (en) 2015-04-15 2017-06-13 Corning Optical Communications Wireless Ltd Optimizing remote antenna unit performance using an alternative data channel
US9948349B2 (en) 2015-07-17 2018-04-17 Corning Optical Communications Wireless Ltd IOT automation and data collection system
US10735838B2 (en) 2016-11-14 2020-08-04 Corning Optical Communications LLC Transparent wireless bridges for optical fiber-wireless networks and related methods and systems
CN109246186B (en) * 2018-08-01 2021-03-12 北京晒呗科技有限公司 Distributed Internet of things terminal system and method based on RoF (fiber-optic bus)
TWI728379B (en) * 2019-06-10 2021-05-21 永滐投資有限公司 IoT NETWORK ARCHITECTURE AND A WAVELENGTH DIVISION IOT GATEWAY DEVICE THEREOF

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6477154B1 (en) * 1997-08-14 2002-11-05 Sk Telecom Co., Ltd. Microcellular mobile communication system
CN1745560A (en) * 2002-12-03 2006-03-08 Adc长途电讯有限公司 Distributed digital antenna system
CN101496306A (en) * 2006-06-02 2009-07-29 高通股份有限公司 Multi-antenna station with distributed antenna
CN101542928A (en) * 2006-08-29 2009-09-23 Lgc无线公司 Distributed antenna communications system and methods of implementing thereof

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6374124B1 (en) * 1997-12-24 2002-04-16 Transcept, Inc. Dynamic reallocation of transceivers used to interconnect wireless telephones to a broadband network
KR100352852B1 (en) * 2000-12-22 2002-09-16 엘지전자 주식회사 A transmitting device of receiving signal for optical bts
WO2006046088A1 (en) * 2004-10-25 2006-05-04 Telecom Italia S.P.A. Communications method, particularly for a mobile radio network
US7848654B2 (en) * 2006-09-28 2010-12-07 Corning Cable Systems Llc Radio-over-fiber (RoF) wireless picocellular system with combined picocells
US7787731B2 (en) 2007-01-08 2010-08-31 Corning Incorporated Bend resistant multimode optical fiber
CN101090299A (en) * 2007-05-21 2007-12-19 湖南大学 Method and system for synchronous generating radio and wire signal using double-arm modulator
US20090169163A1 (en) 2007-12-13 2009-07-02 Abbott Iii John Steele Bend Resistant Multimode Optical Fiber
CN101296525A (en) * 2008-06-25 2008-10-29 山东大学 Local side OLT device with amalgamation access
CN101346006B (en) * 2008-08-19 2011-01-19 武汉长光科技有限公司 Radio frequency passive optical network with broadband wireless and optical transmission amalgamation access
CN201315588Y (en) * 2008-12-04 2009-09-23 浪潮电子信息产业股份有限公司 ONU device for realizing EPON and wireless incorporation access

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6477154B1 (en) * 1997-08-14 2002-11-05 Sk Telecom Co., Ltd. Microcellular mobile communication system
CN1745560A (en) * 2002-12-03 2006-03-08 Adc长途电讯有限公司 Distributed digital antenna system
CN101496306A (en) * 2006-06-02 2009-07-29 高通股份有限公司 Multi-antenna station with distributed antenna
CN101542928A (en) * 2006-08-29 2009-09-23 Lgc无线公司 Distributed antenna communications system and methods of implementing thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103220760A (en) * 2013-04-24 2013-07-24 吉林大学 OW-RF fusion system and cross-domain communication method based on same

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