CN102918924B

CN102918924B - Digital data service is provided in based on distributed radio frequency (RF) communication system of optical fiber

Info

Publication number: CN102918924B
Application number: CN201180024499.4A
Authority: CN
Inventors: 威廉·P·丘恩; 迈克尔·索尔; 沃尔夫冈·G·施韦克
Original assignee: Corning Optical Communications LLC
Current assignee: Corning Research and Development Corp
Priority date: 2010-05-02
Filing date: 2011-05-02
Publication date: 2016-01-20
Anticipated expiration: 2031-05-02
Also published as: CN102918924A; WO2011139942A1; EP2567592A1; CN105577282A; CN105577282B

Abstract

The open distributed communication system based on optical fiber herein, described system provides and supports RF communication service and digital data service.RF communication service and digital data service by fiber distribution to client terminal device, such as, remote antenna unit.In some embodiments, the fiber distribution of digital data service by separating with the optical fiber distributing RF communication service.In other embodiments, digital data service is distributed together with RF communication service by conventional optical fiber.For example, digital data service can be distributed by conventional optical fiber with different frequency with different wave length and/or via frequency division multiplexing (FDM) via wavelength division multiplexing (WDM) together with RF communication service.Being distributed in the distributed communication system based on optical fiber provides the power supply of power supply also to can be used for providing power supply to digital data service assembly for distally antenna element.

Description

Digital data service is provided in based on distributed radio frequency (RF) communication system of optical fiber

Related application

" ProvidingDigitalDataServicesinOpticalFiber-basedDistribu tedRadioFrequency (RF) CommunicationsSystems by name of subject application request application on May 2nd, 2010, andRelatedComponentsandMethods " U.S. Provisional Patent Application case the 61/330th, No. 386, the U.S. Provisional Patent Application case the 61/393rd of application on October 14th, 2010, No. 177 and on September 28th, 2010 application U. S. application case the 12/892nd, the priority of No. 424, the full text of described application case is incorporated herein by reference.

Subject application relates to the U.S. Provisional Patent Application case the 61/330th of " PowerDistributioninOpticalFiber-basedDistributedCommunic ationsSystemsProvidingDigitalDataandRadioFrequency (RF) CommunicationsServices; andRelatedComponentsandMethods " by name of application on May 2nd, 2010, No. 385, the full text of described application case is incorporated herein by reference.

Subject application also relates to the U.S. Provisional Patent Application case the 61/330th of " OpticalFiber-basedDistributedCommunicationsSystems; andRelatedComponentsandMethods " 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 the ever-increasing demand that communicates to high-speed mobile data, radio communication develops rapidly.Such as, so-called " Wireless Fidelity " or " WiFi " system and wireless lan (wlan) are just being configured in many dissimilar regions (such as, cafe, airport, library etc.).Distributed communication system and the wireless device being called " client ", described wireless device must be positioned at wireless range or " cell coverage area ", to communicate with access point apparatus.

The method of configuring distributed communication system comprises following steps: use radio frequency (RF) antenna coverage areas, also referred to as " antenna coverage areas ".Such as, antenna coverage areas can have scope from several meters to the radius up to 20 meters.Combine some access point apparatus and form antenna coverage areas array.Because each antenna coverage areas covers among a small circle, so each antenna coverage areas only has several user (client) usually.This situation allows to minimize the quantity of the RF bandwidth shared between wireless system users.May need in building or other facility, provide antenna coverage areas to provide distributed communication system to access to the client in building or facility.But, may need to adopt optical fiber to carry out allocate communications signal.The benefit of optical fiber comprises the bandwidth of increase.

One class utilizes for the formation of the distributed communication system (being called " optical fiber radio " or " RoF ") of antenna coverage areas the RF signal sent by optical fiber.Described system can comprise headend station, and described headend station is couple to multiple remote antenna unit optically, and described in each, remote antenna unit provides antenna coverage areas.Remote antenna unit can comprise RF transceiver separately, and described RF transceiver is couple to antenna with wireless transmission RF signal, and wherein remote antenna unit is couple to headend station via optical fiber link.RF signal can by the RF transceiver in remote antenna unit.The optical RF signal imported into from Optical fiber downlinks is converted to electrical RF signal via light to electricity (O/E) transducer by remote antenna unit, and described electrical RF signal is then delivered to RF transceiver.Electrical RF signal is converted to electromagnetic signal via antenna by RF transceiver, and described antenna is couple to the RF transceiver be provided in remote antenna unit.Antenna is also converted to electrical RF signal (that is, the electrical RF signal in electric wire) from the client receiving electromagnetic signals (that is, electromagnetic radiation) antenna coverage areas and by described electromagnetic signal.Electrical RF signal is then converted to optical RF signal via electricity to light (E/O) transducer by remote antenna unit.Optical RF signal is then sent to headend station by fiber optic uplink.

Summary of the invention

Execution mode disclosed in embodiment comprises the distributed communication system based on optical fiber, and described system provides and supports radio frequency (RF) communication service and digital data service two kinds.RF communication service and digital data service by fiber distribution to client terminal device, such as, remote antenna unit.The fiber distribution of digital data service by separating with the optical fiber distributing RF communication service.Or digital data service is distributed together with RF communication service by conventional optical fiber.For example, digital data service can be distributed by conventional optical fiber with different frequency with different wave length and/or via frequency division multiplexing (FDM) via wavelength division multiplexing (WDM) together with RF communication service.Being distributed in the distributed communication system based on optical fiber provides the power supply of power supply also to can be used for providing power supply to digital data service assembly for distally antenna element.

In one embodiment, provide a kind of for RF communication service and digital data service (DDS) being assigned to the distributing antenna system of at least one remote antenna unit (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.HEU is also through arranging so that electric at least one down link RF signal of communication is converted at least one downlink optical RF signal of communication, and described at least one downlink optical RF signal of communication is to be sent at least one RAU by least one communication downlink.HEU is also through arranging to receive at least one optical uplink RF signal of communication by least one communication uplink from least one RAU.HEU is also through arranging so that at least one optical uplink RF signal of communication is converted to the electric RF signal of communication of at least one up link.Distributing antenna system also comprises DDS controller.DDS controller through arranging with at least one the downlink optical digital signal received containing at least one DDS, and provides at least one downlink optical digital signal by least one second communication down link at least one RAU.

In another embodiment, a kind of method RF communication and DDS being assigned at least one RAU in distributing antenna system is provided.Said method comprising the steps of: receive the electric RF signal of communication of at least one down link at HEU place.Described method is further comprising the steps of: electric at least one down link RF signal of communication is converted at least one downlink optical RF signal of communication, and described at least one downlink optical RF signal of communication is to be sent at least one RAU by least one communication downlink.Described method is further comprising the steps of: receive at least one optical uplink RF signal of communication by least one communication uplink from least one RAU at HEU place.Described method is further comprising the steps of: at least one optical uplink 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 downlink optical digital signal containing at least one DDS at DDS controller place, and provide at least one downlink optical digital signal by least one second communication down link at least one RAU.

In another embodiment, provide a kind of for the RAU in distributing antenna system.Described RAU comprises light to electricity (O-E) transducer, described O-E transducer through arranging so that the downlink optical received RF signal of communication is converted to the electric RF signal of communication of down link, 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 so that electric for the up link received from least one first port RF signal of communication is converted to optical uplink RF signal of communication.Described RAU also comprises DDS interface, and described DDS interface is couple at least one second port.DDS interface through arrange downlink optical digital signal is converted to down link electrical digital signal to be provided at least one second port, and by from least one second port accepts to up link electrical digital signal be converted to optical uplink digital signal.

Additional features structure and advantage is set forth by embodiment subsequently, and to those of ordinary skill in the art, extra feature structure and advantage will partly obviously or by the execution mode (comprising embodiment subsequently, claims and accompanying drawing) that practice is described herein be recognized from describe.

Should be understood that general description and following detailed description two kinds all propose execution mode and be intended to be provided for understand the character of disclosure case and the general introduction of characteristic or framework above.Comprise accompanying drawing to provide further understanding, and accompanying drawing to be incorporated in this specification and to form the part of this specification.The various execution mode of graphic diagram, and together with the description in order to explain principle and the operation of disclosed concept.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of the exemplary distributed communication system based on optical fiber;

Fig. 2 is the more detailed maps of exemplary headend unit (HEU) and remote antenna unit (RAU), described HEU and described RAU be configurable on Fig. 1 based in the distributed communication system of optical fiber;

Fig. 3 is the partial cross section schematic diagram of exemplary building infrastructure, and the distributed communication system based on optical fiber in Fig. 1 can be used in described building infrastructure;

Fig. 4 is the schematic diagram of illustrative embodiments, and described execution mode is by being provided to based on the RAU in the distributed communication system of optical fiber with the downlink optical fiber providing the optical fiber of radio frequency (RF) communication service to separate and uplink optical fiber by digital data service;

Fig. 5 is the figure of the exemplary headend medium converter (HMC) of the distributed communication system based on optical fiber for Fig. 4, described system contains digital media converter (DMC), described DMC is through arranging so that electrical digital signal is converted to optical digital signal, and vice versa;

Fig. 6 is the figure for the exemplary DMC in 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, described RAU can be used for providing exemplary digital data service and RF communication service based in the distributed communication system of optical fiber;

Fig. 9 is the schematic diagram of another illustrative embodiments, and described execution mode provides digital data service by the downlink optical fiber of separating with RF communication service and uplink optical fiber to 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 described execution mode uses WDM to be each channel multiplexing uplink communication and downlink communication by conventional optical fiber;

Figure 11 is the schematic diagram of another illustrative embodiments, described execution mode in based on the distributed communication system of optical fiber by conventional downlink optical fiber and conventional uplink optical fiber to use WDM with multiplexing digital data service and RF communication service in HEU and HMC of different wave length in colocated;

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 conventional downlink optical fiber and conventional uplink optical fiber with different wave length in based on the distributed communication system of optical fiber in conventional shell HEU and MC;

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 uses FDM and WDM to come multiplexing digital data service and RF communication service by downlink optical fiber and uplink optical fiber with different frequency and different wave length in based on the distributed communication system of optical fiber.

Embodiment

With detailed reference to execution mode, the example of described execution mode is illustrated in the drawings, in the drawing depicted portion (and not all) execution mode.Certainly, concept can to present in many different forms and to should not be construed as restriction in this article; On the contrary, these execution modes are provided so that disclosure case will meet the legal requiremnt be suitable for.As possible, similar elements symbol will in order to indicate like elements or part.

Execution mode disclosed in embodiment comprises the distributed communication system based on optical fiber, and described system provides and supports radio frequency (RF) communication service and digital data service two kinds.RF communication service and digital data service by fiber distribution to client terminal device, such as, remote antenna unit.For example, 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 of digital data service by separating with the optical fiber distributing RF communication service.Or digital data service is distributed together with RF communication service by conventional optical fiber.For example, digital data service can be distributed by conventional optical fiber with different frequency with different wave length and/or via frequency division multiplexing (FDM) via wavelength division multiplexing (WDM) together with RF communication service.Being distributed in the distributed communication system based on optical fiber provides the power supply of power supply also to can be used for providing power supply to digital data service assembly for distally antenna element.

With regard to this point, describe the exemplary distributed communication system based on optical fiber about Fig. 1 to Fig. 3, described system provides RF communication service, and does not provide digital data service.For additionally providing digital data service together with the various execution modes of RF communication service in based on the distributed communication system of optical fiber from Fig. 4.

With regard to this point, Fig. 1 is the schematic diagram of the execution mode of distributed communication system based on 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 setting up with the wireless client device of radio frequency (RF) scope being arranged in antenna coverage areas communicating.Distributed communication system 10 based on optical fiber provides RF communication service (such as, cellular service).In this embodiment, the distributed communication system 10 based on optical fiber comprises front end unit (HEU) 12, one or more remote antenna unit (RAU) 14 and optical fiber 16, and HEU12 is couple to RAU14 by described optical fiber 16 optically.HEU12 through arranging to pass through down link electrical RF signal 18D from one or more information source (such as, network or carrier wave) received communication, and provides described communication to RAU14.HEU12 is also through arranging the communication received from RAU14 is turned back to one or more information source via up link electric RF signal 18U.With regard to this point, in this embodiment, optical fiber 16 comprises at least one downlink optical fiber 16D in order to the signal transmitted from HEU12 to be carried to RAU14 and at least one the uplink optical fiber 16U in order to the signal transmitted from RAU14 to be carried back HEU12.

Distributed communication system 10 based on optical fiber has antenna coverage areas 20, and described antenna coverage areas 20 can roughly centered by RAU14.The antenna coverage areas 20 of RAU14 forms RF overlay area 21.HEU12 is applicable to perform or promote any one application in some optical fiber radios (RoF) application (such as, radio frequency (RF) identifies (RFID), wireless lan (wlan) communication or cell phone service).Client terminal device 24 is presented in antenna coverage areas 20 with the form of (such as) mobile device, and such as, described mobile device can be cell phone.Client terminal device 24 can be any device that can receive RF signal of communication.Client terminal device 24 comprises antenna 26(such as, wireless network card), described antenna 26 is applicable to receive and/or send electromagnetic RF signal.

Continue with reference to figure 1, for electrical RF signal being sent to RAU14 by downlink optical fiber 16D, and then the client terminal device 24, HEU12 be sent in the antenna coverage areas 20 that formed by RAU14 comprises electric to light (E/O) transducer 28.Down link electrical RF signal 18D is converted to the downlink optical RF signals 22D transmitted by downlink optical fiber 16D by E/O transducer 28.RAU14 comprises light to electricity (O/E) transducer 30, described O/E transducer 30 is in order to convert back electrical RF signal by the downlink optical RF signals received 22D, and described electrical RF signal is to be wirelessly sent to the client terminal device 24 being arranged in antenna coverage areas 20 by the antenna 32 of RAU14.

Similarly, antenna 32 is also through arranging to receive wireless RF communication from the client terminal device 24 in antenna coverage areas 20.With regard to this point, antenna 32 receives wireless RF communication from client terminal device 24 and will represent that the electrical RF signal of wireless RF communication is sent to the E/O transducer 34 RAU14.Electrical RF signal is converted to optical uplink RF signal 22U by E/O transducer 34, and described optical uplink RF signal 22U is to transmit by uplink optical fiber 16U.Optical uplink RF signal 22U is converted to the electric RF signal of up link by the O/E transducer 36 be provided in HEU12, and described up link electric RF signal then can be used as up link electric RF signal 18U and sends back network or other information source.In this embodiment, HEU12 can not identify the position of the client terminal device 24 in this execution mode.Client terminal device 24 can in the scope of any antenna coverage areas 20 formed by RAU14.

Fig. 2 is the more detailed maps of the exemplary distributed communication system based on optical fiber of Fig. 1, and described system is served for specific RF or application provides electric RF service signal.In the exemplary embodiment, HEU12 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 and provides described signal.In certain exemplary embodiments, this situation comprises provides by specifying the WLAN signal of (that is, from 2.4 to 2.5 gigahertzs (GHz) with from the frequency range of 5.0 to 6.0GHz) to distribute in Institute for Electrical and Electronics Engineers 802.11 standard.Other electrical RF signal frequency any is possible.In another illustrative embodiments, service unit 37 provides electric RF service signal by directly producing signal.In another illustrative embodiments, service unit 37 coordinates the transmission of the electric RF service signal between the client terminal device 24 in antenna coverage areas 20.

Continue with reference to figure 2, service unit 37 is conductively coupled to E-O transducer 28, and described E-O transducer 28 is from service unit 37 receiving downlink electrical RF signal 18D and described signal is converted to corresponding downlink optical RF signals 22D.In the exemplary embodiment, E-O transducer 28 comprises laser, described laser is applicable to transmit the enough dynamic ranges for described RoF application herein, and, described E-O transducer 28 comprises laser driver/amplifier alternatively, and described laser driver/amplifier electric is couple to laser.The example being 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).

Continue also to comprise O-E transducer 36 with reference to figure 2, HEU12, described O-E transducer 36 is conductively coupled to service unit 37.Described signal is also converted to corresponding up link electric RF signal 18U by O-E transducer 36 receiving uplink optical RF signal 22U.In the exemplary embodiment, O-E transducer 36 is photodetector or the photodetector being conductively coupled to linear amplifier.As shown in Figure 2, E-O transducer 28 and O-E transducer 36 form " transducer to " 35.

According to illustrative embodiments, the service unit 37 in HEU12 can comprise the RF signal modulator/demodulator unit 40 for difference modulating/demodulating down link electrical RF signal 18D and up link electric RF signal 18U.Service unit 37 can comprise digital signal processing unit (" digital signal processor ") 42, described digital signal processor 42 is for providing the signal of telecommunication to RF signal modulator/demodulator unit 40, and the described signal of telecommunication is modulated on RF carrier wave to produce required down link electrical RF signal 18D.Digital signal processor 42 is also through arranging to be processed the restituted signal provided by demodulation up link electric RF signal 18U by RF signal modulator/demodulator unit 40.HEU12 also can comprise for the treatment of data and the optional CPU (CPU) 44 of in addition actuating logic and calculating operation, and for storing the memory cell 46 of data (such as, by the data of WLAN or other Internet Transmission).

Continue with reference to figure 2, RAU14 also comprise comprise O-E transducer 30 and E-O transducer 34 transducer to 48.The downlink optical RF signals 22D received from HEU12 is converted back down link electrical RF signal 50D by O-E transducer 30.Electric for the up link received from client terminal device 24 RF signal 50U is converted to the optical uplink RF signal 22U being sent to HEU12 by E-O transducer 34.O-E transducer 30 and E-O transducer 34 via RF signal guide element 52(such as, circulator) be conductively coupled to antenna 32.As described below, RF signal guide element 52 is in order to guide down link electrical RF signal 50D and up link electric RF signal 50U.According to illustrative embodiments, antenna 32 can comprise one or more paster antenna, the such as U.S. patent application case the 11/504th of " the Radio-over-FiberTransponderWithADual-BandPatchAntennaSys tem " by name of application on August 16th, 2006, " CentralizedOpticalFiber-BasedWirelessPicocellularSystems andMethods " U.S. patent application case the 11/451st by name of No. 999 and application on June 12nd, 2006, paster antenna disclosed in No. 553, the full text of above-mentioned two application cases is all incorporated herein by reference.

Continue with reference to figure 2, the distributed communication system 10 based on optical fiber also comprises power supply unit 54, and described power supply unit 54 produces electric power signal 56.Described power supply unit 54 is conductively coupled to HEU12 and thinks that the power consumption element in described HEU12 charges.In the exemplary embodiment, unless power line 58 runs through HEU12 and extends to RAU14 think that transducer is passive device to the O-E transducer 30 in 48 and E-O transducer 34, optional RF signal guide element 52(RF signal guide element 52, such as, circulator) and any other power consumption element charging of providing.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 RAU14 place.DC power supply changeover device 64 is conductively coupled to transducer to the O-E transducer 30 in 48 and E-O transducer 34, further, one or more voltage level of electric power signal 56 is become one or more power level needed for power consuming component in RAU14 by described DC power supply changeover device 64.In the exemplary embodiment, DC power supply changeover device 64 is DC/DC power supply changeover device or AC/DC power supply changeover device, depending on the type of electric power signal 56 carried by power line 58.In another illustrative embodiments, power line 58(dotted line) directly from power supply unit 54(instead of from HEU12 or pass through HEU12) extend to RAU14.In another illustrative embodiments, power line 58 comprises more than two wires and carries multivoltage.

How the distributed communication system based on optical fiber can be configured in the further exemplary graphic of indoor for providing, provide Fig. 3.Fig. 3 uses the partial cross section schematic diagram 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.Building infrastructure 70 generally represents the building of any type, and the distributed communication system 10 based on optical fiber is configurable in described building.Such as, distributed communication system 10 as above as described in Fig. 1 and Fig. 2, based on optical fiber merges HEU12 to provide various types of communication service to the overlay area in building infrastructure 70.For example, described in more detail as follows, in this embodiment, based on optical fiber distributed communication system 10 through arrange to receive RF wireless signals and RF signal to be converted to the RoF signal being sent to multiple RAU14 by optical fiber 16.In this embodiment, the distributed communication system 10 based on optical fiber can be the indoor distributed antenna system (IDAS) that (such as) provides wireless service in building infrastructure 70.Such as, the wireless service that these wireless signals can comprise cellular service, such as RFID follows the tracks of, Wireless Fidelity (WiFi), Local Area Network, WLAN and above-mentioned every combination.

Continue with reference to figure 3, in this embodiment, building infrastructure 70 comprises first (ground) floor 72, second floor 74 and third story layer 76.In building infrastructure 70, antenna coverage areas 80 is provided to carry out service floor 72,74,76 by HEU12 by main frame 78.For simplicity, the ceiling of a diagram floor 72,74,76 in 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 RAU14 in building infrastructure 70.Each RAU14 and then serve self overlay area in antenna coverage areas 80.Trunk cable 82 can comprise (such as) riser cable 84, and all downlink optical fiber 16D and uplink optical fiber 16U are carried to HEU12 and carry all optical fiber from described HEU12 by described riser cable 84.Riser cable 84 is by interconnecting unit (ICU) 85 route.ICU85 can be provided as a part for the power supply unit 54 in Fig. 2 or separate with described power supply unit 54.ICU85 also can through arranging to be provided in via (as shown in Figure 2 and as mentioned above) in array cable 87 and providing power supply with the power line 58 that downlink optical fiber 16D is assigned to RAU14 together with uplink optical fiber 16U to RAU14.Trunk cable 82 can comprise one or more many cables (MC) connector, and described MC connector is applicable to the downlink optical fiber 16D of selection to be connected to some fiber optic cables 86 with uplink optical fiber 16U together with power line.

Trunk cable 82 makes multiple fiber optic cables 86 can distribute throughout building infrastructure 70(such as, be fixed to ceiling or other support surface of each floor 72,74,76), think that the first floor 72, second floor 74 and third story layer 76 provide antenna coverage areas 80.In the exemplary embodiment, HEU12 is positioned at building infrastructure 70 (such as, between wardrobe or control room), and in another illustrative embodiments, HEU12 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 (such as, cellular service provider), and described BTS88 is connected to HEU12 and can locates with HEU12 colocated or away from described HEU12.BTS is any station or information source, and described station or information source provide input signal to HEU12 and receive inverse signal from HEU12.In typical cellular system, such as, multiple BTS is configured in multiple remote location and sentences and provide radio telephone to cover.Each BTS is useful to corresponding community, and, when mobile radio station enters community, BTS and mobile station communicate.Each BTS can comprise at least one wireless set, and described wireless set communicates for enabling one or more subscriber unit operated in cell associated.

In Fig. 1 to Fig. 3 and the above-mentioned distributed communication system 10 based on optical fiber point-to-point communication between HEU12 and RAU14 is provided.Each RAU14 is communicated with HEU12 with uplink optical fiber pair by unique down link, to provide point-to-point communication.No matter when be arranged on by RAU14 in the distributed communication system 10 based on optical fiber, RAU14 is connected to unique down link and uplink optical fiber pair, and described optical fiber is to being connected to HEU12.Downlink optical fiber and uplink optical fiber may be provided in optical fiber 16.Multiple down link and uplink optical fiber are to may be provided in fiber optic cables to serve multiple RAU14 by conventional fiber optic cables.For example, with reference to figure 3, the RAU14 be arranged on given floor 72,74,76 can be served by same optical fiber 16.With regard to this point, optical fiber 16 can have multiple node, and at described Nodes, unique down link and uplink optical fiber are to being connected to given RAU14.

May need for client terminal device provides digital data service and RF communication service two kinds.For example, may need to provide digital data service and RF communication service to the client terminal device being arranged in described building infrastructure 70 in 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 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 Gigabits per second (Mbs) (that is, Fast Ethernets) or kilomegabit (Gb) Ethernet or 10,000,000,000 (10G) Ethernet.The example of Digital Data Set includes, but is not limited to wire server and wireless server, WAP (wireless access point) (WAP), gateway, desktop computer, hub, switch, remote radio heads (RRH), Base Band Unit (BBU) and femtocell.Independent digital data service network can be provided, 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, and described system supports RF communication service and digital data service two kinds.RF communication service and digital data service by fiber distribution to client terminal device, such as, remote antenna unit.The fiber distribution of digital data service by separating with the optical fiber distributing RF communication service.Or digital data service is distributed together with RF communication service by conventional optical fiber in based on the distributed communication system of optical fiber.For example, digital data service is distributed with different wave length and/or via frequency division multiplexing (FDM) with different frequency via wavelength division multiplexing (WDM) by conventional optical fiber together with RF communication service.

Fig. 4 is the schematic diagram of illustrative embodiments, and digital data service is provided to based on the RAU in the distributed communication system 90 of optical fiber by the downlink optical fiber of separating with radio frequency (RF) communication service and uplink optical fiber by described execution mode.Distributed communication system 90 based on optical fiber comprises some optical communication components, described optical communication components be provided in Fig. 1 to Fig. 3 based in the distributed communication system 10 of optical fiber.These Common Components are illustrated with the common component symbol of Fig. 1 to Fig. 3 in Fig. 4.As shown in Figure 4, HEU12 is provided.HEU12 is from BTS88 receiving downlink electrical RF signal 18D.As mentioned above, down link electrical RF signal 18D is converted to the downlink optical RF signals 22D being assigned to RAU14 by HEU12.HEU12 is also provided to BTS88 through arranging to be converted to by the optical uplink received from RAU14 RF signal 22U and to be provided to the up link electric RF signal 18U be connected on the network 93 of BTS88.Terminal block 92 can be provided with receiving downlink optical fiber 16D and uplink optical fiber 16U, and described downlink optical fiber 16D and uplink optical fiber 16U is through arranging to carry downlink optical RF signals 22D and optical uplink RF signal 22U.As mentioned above and shown in Fig. 3, downlink optical fiber 16D and uplink optical fiber 16U can together with to be bundled in one or more riser cable 84 and one or more ICU85 can be provided to.

For in this embodiment provide digital data service based in the distributed communication system 90 of optical fiber, in this example, provide with the digital data service controller of the form of front end medium converter (HMC) 94 (also referred to as " DDS controller ").DDS controller 94 can only include the additional functionality providing the medium converter of medium conversion facilities maybe can comprise promoting digital data service.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 wired, wireless or two kinds combination.Fig. 5 illustrates the example of HMC94.HMC94 comprises shell 95, described shell 95 through arrange so that digital media converter (DMC) 97 to interface is received into digital data service switch 96, to support and to provide digital data service.For example, digital data service switch 96 can be Ethernet switch.Such as, digital data service switch 96 can through arranging to provide kilomegabit (Gb) Ethernet digital data service.DMC97 is through arranging so that electrical digital signal is converted to optical digital signal, and vice versa.DMC97 can install (that is, in the installation do not had under required user's facilities and operability) in HMC94 through being set to plug and play.Fig. 6 illustrative exemplary DMC97, described DMC97 can be placed in the shell 95 of HMC94.For example, DMC97 can comprise Ethernet input connector or adapter (such as, RJ-45) and optical fiber out connector or adapter (such as, LC, SC, ST, MTP).

With reference to figure 4, in this embodiment, HMC94(is via DMC97) through arranging down link electrical digital signal (or down link electrical digital Data Service signal) 98D is converted to downlink optical digital signal (or downlink optical digital data service signal) 100D by the digital cable 99 from digital data service switch 96, described downlink optical digital signal 100D is sent to RAU14 by downlink optical fiber 102D.HMC94(is via DMC97) also through arranging to be converted to the up link electrical digital signal 98U being sent to digital data service switch 96 from RAU14 receiving uplink optical digital signal 100U and by optical uplink digital signal 100U via uplink optical fiber 102U.Like this, the digital data service of the part of the distributed communication system 90 based on optical fiber is provided as by optical fiber to provide the digital data service except RF communication service.The client terminal device being positioned at RAU94 place can be accessed by these digital data service and/or RF communication service, depending on the setting of described client terminal device.For example, the building infrastructure 70 of Fig. 7 pictorial image 3, but have except the illustrative example based on the digital data service except the RF communication service in the distributed communication system 90 of optical fiber and digital customer end device, described digital data service and digital customer end device can be provided to client terminal device.As shown in Figure 7, exemplary digital data service comprises WLAN106, femtocell 108, gateway 110, Base Band Unit (BBU) 112, remote radio heads (RRH) 114 and server 116.

Referring back to Fig. 4, in this embodiment, downlink optical fiber 102D and uplink optical fiber 102U is provided in fiber optic cables 104, and described fiber optic cables 104 are connected with ICU85 interface.ICU85 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 and uplink optical fiber 16D carrying RF optical signalling in described common point.One or more fiber optic cables 104(can be provided in this article also referred to as array cable 104), described fiber optic cables 104 containing for the downlink optical fiber 16D of RF communication service and uplink optical fiber 16U with for the downlink optical fiber 102D of digital data service and uplink optical fiber 102U, described optical line by and be provided to RAU14.The combination of the combination of any service or the optical fiber of any type may be provided in array cable 104.For example, array cable 104 can comprise monomode fiber for RF communication service and/or digital data service and/or multimode fiber.

Application on May 15th, 2009 and the U.S. patent application case the 12/466th of by name " PowerDistributionDevices, Systems, andMethodsForRadio-Over-Fiber (RoF) DistributedCommunication ", the application of No. 514 (full text of this case is incorporated herein by reference) and on May 2nd, 2010 and the U.S. Provisional Patent Application case the 61/330th of by name " PowerDistributioninOpticalFiber-basedDistributedCommunic ationSystemsProvidingDigitalDataandRadio-Frequency (RF) CommunicationServices, andRelatedComponentsandMethods ", the example of ICU is described in No. 385, described ICU may be provided in distributed communication system 90 based on optical fiber point to be used in the downlink optical fiber 16D of RF communication service and uplink optical fiber 16U and for the downlink optical fiber 102D of digital data service and uplink optical fiber 102U, the full text of described both application cases is all incorporated herein by reference.

Continue with reference to figure 4, some RAU14 can be connected to access point (AP) 118 or support other device of digital data service.Diagram AP118, but AP118 can be other device any supporting digital data service.In the example of AP, AP118 provides the access to the digital data service provided by digital data service switch 96.This is because downlink optical fiber 102D and uplink optical fiber 102U is provided to AP118 via array cable 104 and RAU14, described downlink optical fiber 102D and uplink optical fiber 102U carries by down link electrical digital signal 98D and up link electrical digital signal 98U converted downlink optical digital signal 100D and optical uplink digital signal 100U from digital data service switch 96.Numerical data client terminal device can be accessed by AP118 to access the digital data service provided by digital data service switch 96.

Digital data service client (such as, AP) needs electric power to operate and receiving digital data service.By providing digital data service as the part of the distributed communication system based on optical fiber, the electric power be assigned to based on the RAU in the distributed communication system of optical fiber also can be used to as digital data service client provides power supply.With provide independent power supply relative for digital data service client, this can be the method easily providing power supply to digital data service client.For example, by or the power supply that relies on ICU85 to be assigned to the RAU14 in Fig. 4 also can be used to provide power supply to the AP118 at the RAU14 place of the distributed communication system 90 be arranged in based on optical fiber.With regard to this point, through arranging, ICU85 can think that RAU14 and AP118 provides power supply.Power supply unit can be positioned at ICU85, but also can be positioned at the outside of ICU85, and described power supply unit provides by power line 120, as shown in Figure 4.ICU85 can receive interchange (AC) electricity or direct current (DC) electricity.ICU85 can receive 110 volts (V) to 240V AC electricity or DC electric.ICU85 can through arranging to produce any required voltage level and power level.Power level is based on the quantity of RAU14 and the anticipated load supported by RAU14 and any digital device of being connected to RAU14 in Fig. 4.May wish further in ICU85, provide the additional power supply characteristics of management.For example, one or more voltage protection circuit can be provided.

Fig. 8 is the schematic diagram of the exemplary internal components in the RAU14 of Fig. 4, with illustrate further for RF communication downlink optical fiber 16D and uplink optical fiber 16D, how to be provided to RAU14 for the downlink optical fiber 102D of digital data service and uplink optical fiber 102U and electric power and can how to be distributed in RAU14.As shown in Figure 8, graphics-array cable 104, described array cable 104 containing for the downlink optical fiber 16D of RF communication and uplink optical fiber 16D, for digital data service downlink optical fiber 102D and uplink optical fiber 102U and separately see Fig. 2 from the power line 58(of ICU85 carrying power).As above about as described in Fig. 2, power line 58 can comprise two wires 60,62, and described two wires 60,62 can be (such as) copper cash.

For the downlink optical fiber 16D of RF communication and uplink optical fiber 16U, the shell 124 entering RAU14 for the downlink optical fiber 102D of digital data service and uplink optical fiber 102U and power line 58.Also as shown in Figure 2 and above described in, be routed to O-E transducer 30 and E-O transducer 34 respectively for the downlink optical fiber 16D of RF communication and uplink optical fiber 16U, and be routed to antenna 32.For the digital data service interface 126 that downlink optical fiber 102D and the uplink optical fiber 102U of digital data service are routed to the part as RAU14 and provide, to provide the access of digital data service via port one 28, described port one 28 will be described in more detail below.Power line 58 carrying power supply, through arranging, described power supply thinks that 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 regulates correct voltage and provides described correct voltage for O-E transducer 30 and E-O transducer 34, and provides described correct voltage for other circuit in digital data service interface 126 and RAU14.

In this embodiment, digital data service interface 126 is through arranging so that the downlink optical digital signal 100D on downlink optical fiber 102D is converted to down link electrical digital signal 132D, and described down link electrical digital signal 132D can access via port one 28.Digital data service interface 126 is also through arranging so that the up link received by port one 28 electrical digital signal 132U is converted to optical uplink digital signal 100U, and described optical uplink digital signal 100U will provide back HMC94(to see Fig. 4).With regard to this point, medium converter 134 is provided in digital data service interface 126, changes to provide these.Medium converter 134 contains O-E digital quantizer 136, so that the downlink optical digital signal 100D on downlink optical fiber 102D is converted to down link electrical digital signal 132D.Medium converter 134 is also containing E-O digital quantizer 138, and so that the up link received by port one 28 electrical digital signal 132U is converted to optical uplink digital signal 100U, described optical uplink digital signal 100U will provide back HMC94.With regard to this point, the power supply from power line 58 is provided to digital data service interface 126, to provide power supply to O-E digital quantizer 136 and E-O digital quantizer 138.

Because electric power is provided to RAU14 and digital data service interface 126, this is also for providing power supply to provide chance via port one 28 to the digital device being connected to RAU14.With regard to this point, as shown in Figure 8, power interface 140 is also provided in digital data service interface 126.Power interface 140 is through arranging to receive power supply via voltage controller 130 from power line 58, and described power interface 140 is also through arranging to make power supply access by port one 28.By this way, if client terminal device contains compatible connector to be connected to port one 28, so not only accessible digital data service, and also access by same port 128 from the power supply of power line 58.Or power interface 140 can be couple to the port separated with the port 28 for digital data service.

For example, if provide digital data service by Ethernet, so power interface 140 can be provided as Power over Ethernet (PoE) interface.Such as, port one 28 can through arranging to receive the RJ-45 ethernet connector with PoE compatibility.By this way, described Ethernet digital data service also can be linked into HMC94 from downlink optical fiber 102D and uplink optical fiber 102U by Ethernet digital data service access downlink optical fiber 102D and uplink optical fiber 102U to HMC94 by the ethernet connector be connected in port one 28, and described ethernet connector can also access by array cable 104 power supply distributed by ICU85, described array cable 104 is provided by power line 58.

Further, HEU12 can use the communication supported by HEU12 to comprise low order control to medium converter 134 and management.For example, performance data (such as, energising, reception optical digital data etc.) is reported to HEU12 by uplink optical fiber 16U by medium converter 134, and described uplink optical fiber 16U carries communication service.RAU14 can comprise microprocessor, and described microprocessor communicates with medium converter 134, to receive described data and by uplink optical fiber 16U, described data to be sent to HEU12.

Other is arranged in the distributed communication system based on optical fiber provides digital data service to be possible.For example, Fig. 9 is the schematic diagram of another illustrative embodiments, and described execution mode provides digital data service in based on the distributed communication system of optical fiber, and described system is through arranging to provide RF communication service.With regard to this point, Fig. 9 provides the distributed communication system 150 based on optical fiber.Distributed communication system 150 based on optical fiber can be similar with the distributed communication system 90 based on optical fiber in Fig. 4, and can comprise provide in the diagram based on the Common Component in the distributed communication system 90 of optical fiber.In this embodiment, HMC94 and HEU12 colocated, instead of providing of dividing out of HMC94 and HEU12.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, for RF communication downlink optical fiber 16D and uplink optical fiber 16U and be then routed to ICU85 for the downlink optical fiber 102D of digital data service and optical uplink 102U.

During downlink optical fiber 16D and uplink optical fiber 16U for RF communication and the downlink optical fiber 102D for digital data service and optical uplink 102U may be provided in conventional fiber optic cables or is provided in the fiber optic cables that separate.Further, as shown in Figure 9, independent media's transducer (MC) 141 can provide dividually with RAU14, and replacing integrally provides with RAU14, as shown in Figure 4.Independent MC141 can through arranging with containing assembly, and described assembly is identical with the assembly in the digital data service interface 126 provided in fig. 8, comprises medium converter 134.AP118 also can comprise antenna 152 separately, to provide wireless digital data service by RAU14, replaces the cable service that provided by port one 28 or except the cable service provided by port one 28.

Figure 10 A is the schematic diagram of another illustrative embodiments, and described execution mode provides digital data service in based on the distributed communication system of optical fiber.With regard to this point, Figure 10 A provides the distributed communication system 160 based on optical fiber.Based on optical fiber distributed communication system 160 can with the distributed communication system 90 based on optical fiber in Fig. 4 and the distributed communication system 150 based on optical fiber in Fig. 9 similar, and can comprise in the distributed communication system 90 based on optical fiber and Fig. 9 provided in the diagram based on the Common Component in the distributed communication system 150 of optical fiber.

In this embodiment, as shown in FIG. 10A, 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 to being provided to ICU85, to be assigned to RAU14 and independent MC141.Multiplexing technique can be used to the cost reducing digital data service covering further.By using WDM, digital data signal transmits on the optical fiber identical with RF signal of communication, but transmits with different wave length.The media conversion filter separated and the WDM filter that are positioned at transmission location and receiving position (such as, HMC96 and RAU14) place can be used to required wavelength reception signal.

HMC94 and HEU12 colocated in Figure 10 A based in the distributed communication system 160 of optical fiber.Provide multiple wavelength division multiplexer 164(1) to 164(N), each wavelength division multiplexer 164(1) to 164(N) multiplexing at one or more conventional downlink optical fiber 162D(1-N together) and on one or more downlink optical RF signals 22D for RF communication and one or more downlink optical digital signal 100D for digital data service.Similarly, provide multiple Wave decomposing multiplexer 168(1) to 168(N) (such as, filter), each Wave decomposing multiplexer 168(1) to 168(N) one or more optical uplink of demultiplexing RF signal 22U with from one or more conventional uplink optical fiber 162U(1-N) one or more optical uplink digital signal 100U, so that optical uplink RF signal 22U is provided to HEU12 and optical uplink digital signal 100U is provided to HMC94.Wave Decomposition multiplexing (WDD) and WDM are also used in RAU14 and carry out demultiplexing and commonly use downlink optical fiber 162D(1-N) on multiplexed downlink optical RF signals 22D and downlink optical digital signal 100D, and multiplexing conventional uplink optical fiber 162U(1-N) on optical uplink RF signal 22U and optical uplink digital signal 100U.

Figure 10 B is the schematic diagram of another illustrative embodiments, and described execution mode provides digital data service in based on the distributed communication system 160' of optical fiber.The distributed communication system 160' based on optical fiber in Figure 10 B is identical with the distributed communication system 160 based on optical fiber in Figure 10 A, difference is, WDM is used for by conventional optical fiber with the multiplexing uplink communication service of different wave length and downlink communication service, and described conventional optical fiber 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 based on the distributed communication system of 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, replaces wavelength division multiplexing together as one or more the conventional downlink optical fiber 162D(1-N provided in Figure 10 A) on for one or more downlink optical RF signals 22D of RF communication and one or more downlink optical digital signal 100D for digital data service.All downlink optical RF signals 22D and all downlink optical digital signal 100D are multiplexed into single downlink optical fiber 174D by wavelength division multiplexer 172.Similarly, provide Wave decomposing multiplexer 176 with by required wavelength (de) multiplexing all optical uplink RF signal 22U with from all optical uplink digital signal 100U of conventional uplink optical fiber 174U.Wave decomposing multiplexer 175 and wavelength division multiplexer 177 are also used in respectively with the downlink optical RF signals 22D of the wavelength division multiplexing of demultiplexing on conventional downlink optical 174D and optical uplink digital signal 100U in ICU85, and the optical uplink RF signal 22U of wavelength division multiplexing on conventional uplink optical fiber 174U and optical uplink digital signal 100U.

Or, WDD and WDM also can be used on the downlink optical RF signals 22D of the wavelength division multiplexing of demultiplexing on conventional downlink optical 174D and downlink optical digital signal 100D in RAU14, and the optical uplink RF signal 22U of wavelength division multiplexing on conventional uplink optical fiber 174U and optical uplink digital signal 100U.In this alternate embodiments, when conventional WDM signal can daisy chain arrange be assigned to RAU14 from RAU14, demultiplexing can be carried out at RAU14 place.Or optical splitter can be used on the bursting point place in fiber optic cables 104.

Figure 12 is the schematic diagram of another illustrative embodiments, and described execution mode provides digital data service in based on the distributed communication system of 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.Distributed communication system 180 based on optical fiber is identical with the distributed communication system 170 based on optical fiber in Figure 11, difference is, HEU12 and HMC94 is provided in conventional shell 182, and described shell 182 also receives wavelength division multiplexer 172 and Wave decomposing multiplexer 176.Or, be provided in Figure 10 A(164(1-N equally) and 168(1-N)) in multiple wavelength division multiplexer and multiple Wave decomposing multiplexer may be provided in conventional shell 182.

Figure 13 is the schematic diagram of another illustrative embodiments of distributed communication system based on optical fiber, described system with digital data, services.As shown in Figure 13, the distributed communication system 190 based on optical fiber is provided.In this embodiment, frequency division multiplexing (FDM) is used for being served and RF communication service with different frequency multiplexing digital data by downlink optical fiber and uplink optical fiber.An advantage of FDM is used to be: E-O transducer can simultaneously for being converted to respective optical signalling by RF signal of communication and digital data signal.Therefore, the additional media transducer for electrical digital signal being converted to optical digital signal can be avoided to reduce complexity and cost-saving.For example, Fast Ethernet (such as, 100 megabit per seconds (Mbs)) can transmit lower than cellular frequency spectrum (such as, lower than 700MHz).Can transmit more than (1) channel in described frequency range simultaneously.

With regard to this point, HEU12 and HEC94 two kinds is placed in conventional shell 182, as shown in Figure 13.Multiple frequency division multiplexer 192(1-N) be provided in conventional shell 182, further, each frequency division multiplexer 192(1-N) through arrange with before optical transition with different frequency one or more down link electrical digital multiplexing signal 98D and one or more down link electrical RF signal 18D.By this way, after optical transition, conventional Optical fiber downlinks 194D(1-N) can carry at same downlink optical fiber 194D(1-N) on the downlink optical RF signals 22D of frequency division multiplexing and downlink optical digital signal 102D.Similarly, multiple frequency division demodulation multiplexer 196(1-N) be provided in conventional shell 182 with demultiplexing uplink optical fiber 194U(1-N) on optical uplink RF signal 22U and optical uplink digital signal 100U.Frequency division demultiplexing (FDD) and FDM are also used in RAU14.FDD is used in RAU14, with the down link electrical RF signal 18D of demultiplexing frequency division multiplexing after being converted to electric signal from the optical signalling from conventional downlink optical fiber 174D and down link electrical digital signal 98D.FDM be also provided in RAU14 be converted to be provided in optical uplink RF signal 22U on conventional uplink optical fiber 174U and optical uplink digital signal 100U before the electric signal of up link in frequency division multiplexing RAU14.

Figure 14 is the schematic diagram of another illustrative embodiments of distributed communication system based on optical fiber, and described system adopts WDM and FDM two kinds.With regard to this point, Figure 14 diagram is based on the distributed communication system 200 of optical fiber.Distributed communication system 200 based on optical fiber adopts WDM and WDD of the distributed communication system 180 based on optical fiber of Figure 12 together with FDM and FDD of the distributed communication system 190 based on optical fiber of Figure 13.The down link signal of wavelength division multiplexing and the down link signal of frequency division multiplexing are provided by downlink optical fiber 202D.The uplink signal of wavelength division multiplexing and the uplink signal of frequency division multiplexing are provided by uplink optical fiber 202U.

Option and alternative can be provided for above-mentioned execution mode.The digital data service interface be provided in RAU or independent MC can comprise more than a numerical data serve port.For example, with reference to Figure 14, switch 203(such as, Ethernet switch) can be placed in RAU14 to provide the RAU14 that can support more than a numerical data serve port.HMC can have integrated Ethernet switch, so that (such as) several AP can be attached in star-like architecture via cable (such as, 5/6/7 class cable).EtherChannel can be used for based on the control of the distributed communication system of optical fiber and Ethernet media conversion layer, management and/or communication objective.HMC can be single channel scheme or multichannel (such as, ten two (12) channels) scheme.Each channel comparable single channel scheme of multichannel scheme is cheap.Further, except optical fiber, up link electrical digital signal and down link electrical digital signal provide by medium (comprising (such as) conduction wire communication and/or radio communication).

When RF signal of communication have provide FDM to avoid interference close to the frequency of the frequency of digital data signal very much time, in frequency of utilization conversion or frequency under change.When the Digital Baseband Transmission of baseband digital data signal of the frequency spectrum lower than RF signal of communication can be considered, the intermodulation distortion of RF signal of communication can be produced.Other method comprises the following steps: with the upwards converting digital data-signal of the frequency higher than RF signal of communication, and also (such as) constant envelope modulation form is used for digital data signal modulation.Frequency shift keying (FSK) and minimum shift keying (MSK) are modulated to the example being applicable to described modulation format.Further, when the FDM for digital data service, can consider that advanced modulation formats is to transmit with high data rate (such as, one (1) Gb, or ten (10) Gb) by the optical fiber identical with RF signal of communication.The kinds of schemes using (having (such as) 8-FSK's or 16-QAM) single carrier or multicarrier (OFDM) is possible.

Further, as used herein, term " fiber optic cables " and/or " optical fiber " are intended to comprise all types of single mode and multimode lightguide, comprise one or more optical fiber, described optical fiber can plated film, colouring, buffering, one-tenth band and/or other institutional framework had in cable or safeguard structure, such as, one or more pipe, strength member, outer cover etc.Optical fiber disclosed herein can be monomode fiber or multimode fiber.Similarly, the applicable optical fiber of other type comprises other emergent thing any of bending non-sensitive optical fiber or the medium for transmitting optical signal.Bending example that is non-sensitive or resist bending optical fiber is can buy from CorningIncorporated. multimode fiber.Such as, in U.S. patent application case No. 2008/0166094 and No. 2009/0169163, disclose the suitable optical fiber of described type, the full text of the publication of above-mentioned application case is incorporated herein by reference.

Execution mode those skilled in the art will expect many amendments and other execution mode of described execution mode herein, and described amendment and the execution mode belonging to other execution mode are of value to the teaching describing and present in correlative type above.Therefore, should be understood that specification and claims are not limited to disclosed particular implementation, and amendment and other execution mode are 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, so execution mode is intended to the modifications and variations containing described execution mode.Although adopt particular term herein, described term is only for general and descriptive sense instead of the object for restriction.

Claims

1., for radio frequency (RF) communication service and digital data service (DDS) being assigned to a distributing antenna system at least one remote antenna unit (RAU), described system comprises:

Front end unit (HEU), described front end unit through arrange with:

Receive at least one down link electrical radio frequency signal of communication;

At least one down link electrical radio frequency signal of communication described is converted at least one downlink optical rf communication signal, and at least one downlink optical rf communication signal described is to be sent at least one remote antenna unit described by least one communication downlink;

At least one optical uplink rf communication signal is received from least one remote antenna unit described by least one communication uplink; And

At least one optical uplink rf communication signal described is converted to the electric rf communication signal of at least one up link;

Digital data service controller, described digital data service controller through arrange with:

Receive at least one the downlink optical digital signal containing at least one digital data service; And

By at least one second communication down link, at least one downlink optical digital signal described is provided at least one remote antenna unit described;

At least one optical uplink digital signal is received from least one remote antenna unit described by least one second communication up link; And

At least one optical uplink digital signal described is converted at least one up link electrical digital signal; And

Interconnecting unit (ICU), described interconnecting unit through arrange with:

Receive at least one downlink optical rf communication signal described;

Receive at least one downlink optical digital signal described;

At least one downlink optical rf communication signal described is provided at least one remote antenna unit described by least one communication downlink described; And

At least one downlink optical digital signal described is provided at least one remote antenna unit described by least one second communication down link described.

2. distributing antenna system as claimed in claim 1, wherein said digital data service controller further through arrange with:

At least one second optical uplink digital signal is received from least one media controller (MC) by least one second communication up link described; And

At least one second optical uplink digital signal described is converted at least one second up link electrical digital signal.

3. distributing antenna system as claimed in claim 2, at least one digital data service wherein said is made up of group, and described group is accessed (WiMax), digital subscriber line (DSL) and Long Term Evolution (LTE) formed by Ethernet, WLAN (wireless local area network) (WLAN), global intercommunication microwave.

4. distributing antenna system as claimed in claim 3, wherein said digital data service controller is made up of medium converter.

5. distributing antenna system as claimed in claim 1, described system comprises interconnecting unit (ICU) further, described interconnecting unit through arrange with:

At least one optical uplink rf communication signal described is received from least one remote antenna unit described by least one communication uplink described;

At least one optical uplink rf communication signal described is provided to described front end unit;

At least one optical uplink digital signal described is received from least one remote antenna unit described by least one second communication up link described; And

At least one optical uplink rf communication signal described is provided to described front end unit; And

At least one optical uplink digital signal described is provided to described digital data service controller.

6. the distributing antenna system according to any one of claim 1-5, described system comprises further:

At least one wavelength division multiplexer (WDM), at least one wavelength division multiplexer described is through arranging to come at least one downlink optical rf communication signal described in wavelength division multiplexing and at least one downlink optical digital signal described by least one optical fiber communication down link with different wave length; And

At least one Wave decomposing multiplexer (WDD), at least one Wave decomposing multiplexer described is associated with at least one remote antenna unit described and through arranging at least one downlink optical rf communication signal described and at least one downlink optical digital signal described to be separated, at least one downlink optical digital signal described is received by least one communication downlink described.

7. distributing antenna system as claimed in claim 1, described system comprises further:

At least one wavelength division multiplexer (WDM), at least one wavelength division multiplexer described is associated with at least one remote antenna unit described and through arranging to come at least one optical uplink rf communication signal described in wavelength division multiplexing and at least one optical uplink digital signal described by least one communication uplink described with different wave length; And

At least one Wave decomposing multiplexer (WDD), at least one Wave decomposing multiplexer described is through arranging at least one optical uplink rf communication signal described and at least one optical uplink digital signal described to be separated, and at least one optical uplink digital signal described is received by least one communication uplink described.

8. distributing antenna system as claimed in claim 1, described system comprises at least one frequency division multiplexer (FDM) further, and at least one frequency division multiplexer described is through arranging to come at least one down link electrical radio frequency signal of communication described in frequency division multiplexing and at least one down link electrical digital signal by least one communication downlink described with different frequency; And at least one frequency division demodulation multiplexer (FDD), at least one frequency division demodulation multiplexer described is associated with at least one remote antenna unit described and through arranging at least one downlink optical rf communication signal described and at least one downlink optical digital signal described to be separated, at least one downlink optical digital signal described is from least one communication downlink described.

9. distributing antenna system as claimed in claim 1, described system comprises at least one frequency division multiplexer (FDM) further, and at least one frequency division multiplexer described is associated with at least one remote antenna unit described and through arranging to come the electric rf communication signal of at least one up link described in frequency division multiplexing and at least one up link electrical digital signal described by least one communication uplink described with different frequency.

10. distributing antenna system as claimed in claim 9, described system comprises at least one frequency division demodulation multiplexer (FDD) further, at least one frequency division demodulation multiplexer described is through arranging the electric rf communication signal of at least one up link described and at least one up link electrical digital signal described to be separated, and at least one up link electrical digital signal described is from least one communication uplink described.

11. distributing antenna systems as claimed in claim 1, at least one second communication down link wherein said is made up of at least one second optical fiber communication down link.

Radio frequency (RF) communication service and digital data service (DDS) are assigned to the method for at least one the remote antenna unit (RAU) in distributing antenna system by 12. 1 kinds, and described method comprises following steps:

At least one down link electrical radio frequency signal of communication is received at front end unit (HEU) place;

At least one optical uplink rf communication signal is received by least one communication uplink from least one remote antenna unit described at described front end unit place;

At least one the downlink optical digital signal containing at least one digital data service is received at digital data service (DDS) controller place;

At least one downlink optical digital signal described is provided at least one remote antenna unit described by least one second communication down link;

At least one optical uplink digital signal is received by least one second communication up link from least one remote antenna unit described at described digital data service controller place;

At least one second optical uplink digital signal is provided to digital data service network; And

At least one downlink optical rf communication signal described in wavelength division multiplexing and at least one downlink optical digital signal described is come with different wave length by least one optical fiber communication down link.

13. methods as claimed in claim 12, described method comprises following steps further: multiplexing at least one the downlink optical rf communication signal described of Wave Decomposition and at least one downlink optical digital signal described, at least one downlink optical digital signal described is by least one optical fiber communication down-link reception described.

14. methods as claimed in claim 12, described method comprises following steps further: come at least one down link electrical radio frequency signal of communication described in frequency division multiplexing and at least one downlink optical digital signal described by least one communication downlink described with different frequency.

15. methods as claimed in claim 14, described method comprises following steps further: at least one downlink optical rf communication signal described in frequency division demultiplexing and at least one downlink optical digital signal described, at least one downlink optical digital signal described is received by least one communication downlink described.