US20040235469A1 - High bandwidth open wired network - Google Patents

High bandwidth open wired network Download PDF

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US20040235469A1
US20040235469A1 US10/745,258 US74525803A US2004235469A1 US 20040235469 A1 US20040235469 A1 US 20040235469A1 US 74525803 A US74525803 A US 74525803A US 2004235469 A1 US2004235469 A1 US 2004235469A1
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Prior art keywords
network
devices
switch
mobile platform
communicate
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US10/745,258
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English (en)
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William Krug
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Boeing Co
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Boeing Co
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Priority to US10/745,258 priority Critical patent/US20040235469A1/en
Assigned to BOEING COMPANY, THE reassignment BOEING COMPANY, THE ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KRUG, WILLIAM P.
Priority to CA2525380A priority patent/CA2525380C/en
Priority to JP2006514921A priority patent/JP2006526366A/ja
Priority to PCT/US2004/016037 priority patent/WO2005032003A2/en
Priority to CN2004800137776A priority patent/CN1792046B/zh
Priority to EP04809394.2A priority patent/EP1625676B1/de
Priority to BRPI0410481-1A priority patent/BRPI0410481A/pt
Publication of US20040235469A1 publication Critical patent/US20040235469A1/en
Priority to JP2010257429A priority patent/JP2011068350A/ja
Priority to US13/959,477 priority patent/US9420629B2/en
Abandoned legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/06—Airborne or Satellite Networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks

Definitions

  • the present invention relates to communication systems on mobile platforms, and more particularly to open, local area networks that incorporate in route entertainment, cabin services, and satellite Internet subsystems onboard the mobile platforms.
  • the previously developed systems tend to use heavy, costly co-axial, twin-axial or quad copper cables to connect the various devices within the individual systems.
  • these types of cables tend to be difficult to install because of the bulky and difficult to terminate connectors that they require.
  • these cable types are bandwidth limited due to aircraft cabin electrical shielding requirements.
  • current In-Flight-Entertainment systems share the distribution media (i.e., the cabling) and divide the available, limited bandwidth among the passengers, the previously developed systems suffer from limited security and scalability.
  • the present invention includes systems and methods for providing mobile platform passengers with broadband connectivity to support: rebroadcast television, audio, messaging, playback of stored video, the crew information system, and the electronic flight bag, applications, voice, cell phone, video on demand, audio on demand, and online games, among other multimedia, Internet, and telecommunication technologies.
  • the open network, and associated methods, provided herein replace the previous technology that included many parallel systems thereby creating weight, power, and space savings.
  • the present invention provides for more convenient network upgrades, maintenance, modifications, and additions.
  • the present invention provides connectivity for a broad range of peripherals and supports “plug and play” applications and peripherals for use onboard a mobile platform.
  • the present invention allows passengers on an aircraft access to data servers (e.g. audio/visual on demand) while preventing unauthorized access to the data of other passengers and the data servers themselves.
  • data servers e.g. audio/visual on demand
  • the passenger interface to the system is through a combination of switches and host clients that provide the passengers robust audio, voice and control via, for example, USB connections.
  • the switched, high bandwidth, aircraft cabin networks change the paradigm for cabin distribution systems from closed, proprietary, inflexible systems to that of an open, industry compatible, flexible, and integrated system.
  • Methods and systems in accordance with the principles of the present invention seamlessly support both wired and wireless networks and easily adapt to a wide variety of consumer electronic and information technology peripherals. Accordingly, the present invention lowers overall aircraft cost as compared to the conventional approach of designing custom hardware and software for the various airborne applications.
  • the present invention allows users seamless connectivity to broadband, air-to-ground communications systems.
  • An exemplary broadband air-to-ground communications system is described in U.S. patent application Ser. No. 09/639,912 entitled “Method and Apparatus for Providing Bi-Directional Data Services and Live Television Programming to Mobile Platforms filed Aug. 16, 2000, the contents of which are incorporated herein as if set forth in full.
  • the present invention provides an open network suitable for a mobile platform that contains a plurality of peripheral devices.
  • a central server communicates with at least one switch.
  • a plurality of network devices communicates with the switch.
  • each of the plurality of host and personal peripheral devices communicates with one of the network devices.
  • the mobile platform may be an aircraft including a control panel to control the network.
  • a CoreNet may provide a communication gateway between in-flight entertainment and live TV sources, cabin services subsystems, antenna subsystems, and host devices that may be in communication over the network.
  • the network may also include a satellite data transceiver as part of the antenna subsystem.
  • the personal peripherals could use Bluetooth compatible devices in a personal area wireless network rather than USB wired devices to interface to hosts user devices connected to a virtual local area network whereby the virtual network controls the security and quality of service of the network for the host user devices
  • the present invention provides a mobile platform that contains a plurality of host and personal peripheral devices and an open network.
  • a central server communicates with at least one switch.
  • a plurality of network devices communicates with the switch.
  • each of the plurality of peripheral host and personal devices communicates with one of the network devices.
  • the mobile platform may be an aircraft including a control panel to control the network.
  • a CoreNet may provide a communication gateway between in-flight entertainment and live TV sources, cabin services subsystems, antenna subsystems, and host devices that may be in communication over the network.
  • the network may include a satellite data transceiver as part of the antenna subsystem.
  • the personal peripherals eg. headphones, microphones, keyboards, and personal control units
  • the personal peripherals could use Bluetooth compatible devices in a personal area network rather than USB wired devices to interface to host user devices connected to a virtual local area network whereby the virtual network controls the security and quality of service of the network for the host user devices.
  • FIG. 1 is a top plan view of an aircraft in accordance with the principals of the present invention.
  • FIG. 2 is a block diagram of a network of the aircraft of FIG. 1;
  • FIG. 3 is an architecture diagram of another aircraft network in accordance with the present invention.
  • FIG. 4 is a top plan view of portions of another network in accordance with the present invention.
  • FIG. 5 is a block diagram of seat electronics boxes of the networks of FIGS. 2 to 4 ;
  • FIG. 6 is a block diagram of networking cabling in accordance with the principles of the present invention.
  • FIG. 7 is a schematic view of an aircraft seat in accordance with the principles of the present invention.
  • FIG. 1 a mobile platform 10 (e.g., aircraft) in accordance with the principles of the present invention is illustrated.
  • FIG. 1 illustrates a cabin 12 with passenger and crew sections 14 and 16 , respectively.
  • a plurality of seats 18 provides places for the passengers to relax or work during the flight of the aircraft 10 . It is worth noting now that the seats 18 typically come grouped in twos or threes with a center aisle between adjacent groupings.
  • the aircraft 10 may include various amenities to aid the passengers in relaxing on board the aircraft.
  • An in-flight-entertainment (IFE) subsystem may be provided to display movies and play music for the passengers.
  • a cabin services subsystem may be provided as discussed in co-owned, co-pending U.S. patent application Ser. No. 10/670,952, entitled Cabin Services System For A Mobile Platform, filed Sep. 25, 2003 and incorporated herein as if set forth in full.
  • FIG. 2 illustrates a preferred embodiment of such an open network 20 suitable for use on a mobile platform 10 and that reduces mobile platform 10 weight, power consumption, and development time and expense.
  • the open network 20 includes one or more OSI (Open Systems Interconnection) Layer three switches, herein designated as area distribution boxes (ADB) 22 . These are networked together using, preferentially, fiber optic cables 24 . Additional fiber optic links 26 network a plurality of seat electronics boxes (SEB) 28 to the area distribution boxes 22 .
  • the seat electronics boxes 28 generally include media converters and an OSI Layer 2 or 3 switch as will be discussed more thoroughly herein.
  • communications paths 30 and 32 connect various digital host user devices 34 (i.e., carry-on laptop, personal digital assistants, and smartphones host user devices) and dedicated seat peripheral host devices 36 , respectively, attached to the seat electronics boxes 28 .
  • a control panel 38 may be used to configure, control, and administer the network 20 .
  • a “CoreNet” unit 42 may be interposed between the control panel 38 and the remainder of the network 20 .
  • the CoreNet performs functions similar to those of a gateway between the crew information systems (that the control panel 38 resides in) and the remainder of the network 20 that primarily serves the crew cabin.
  • the advantages of interposing the CoreNet unit 42 are that CoreNet units 42 manage the flow of information across the network 20 . Accordingly, using the CoreNet 42 as a gateway and firewall enhances the capability to administer, monitor, and control the network 20 from the control panel 38 .
  • FIG. 2 illustrates the CoreNet unit 42 interposed between the control panel 38 and the network 20 via copper connections 40 and 44 , the present invention is not so limited. For instance, the control panel 38 and the CoreNet unit 42 may be connected in parallel to the remainder of the network 20 .
  • FIG. 2 also shows an audio and video on demand server 46 connected to the network 20 via fiber connection 48 .
  • conventional audio and video sources are decoded at a complex seat box hardwired to an appropriate seat peripheral (e.g., a headphone or a nearby television monitor) via an analog copper cable (as opposed to passed through a digital network) with the audio and video content decoded by a simple media player in a laptop or seat host peripheral.
  • some previous systems connected these devices via closed, proprietary networks with complex seat boxes. Accordingly, the previous systems cannot be easily reconfigured to accommodate new functionality (i.e., new application software hosted on the server, laptop, or seat host peripheral.).
  • the previous systems be scaled to aircraft of different sizes (i.e. number of seats) since signal attenuation and noise prohibit extending the length of these closed and custom designed systems.
  • each change to these conventional systems must be re-certified for each type of aircraft.
  • the overall aircraft 10 cannot be optimized for weight, power, use of internal space, and the like.
  • the present invention optimizes the overall aircraft 10 by networking these systems in an open network 20 onboard the aircraft 10 .
  • the present invention provides an open network 20 for multiple uses. These uses include onboard Internet connectivity (e.g. the Connexion By Boeing SM subsystem), in flight (route) entertainment, and phone and public address handset connectivity (i.e., voice). Moreover, because of the open architecture, additional components with similar form factors may be readily added to the network 20 with little or no recertification, as was required with the previous proprietary systems. For instance, satellite television receivers/encoders, in seat displays (e.g. tablet personal computers), passenger control units, and voice-over-Internet (VOIP) headsets, handsets, and speakers may be added with relative ease while incurring little (installed hardware) or no recertification (carryon hardware) expenses or delays. Moreover, the components in this open system are functionally “plug-and-play” compatible with any client-server technology interconnected with wired and wireless LANs.
  • the network 120 includes several area distribution boxes 122 (switches) networked together via fiber optic cables 124 . Also shown, are groups of seat electronic boxes 128 (i.e., network devices). The seat electronics boxes 128 each correspond to a seat group of one or more seats 18 of the aircraft 10 (see FIG. 1). In the present embodiment, the seat electronics boxes 128 are OSI Layer 2 switches with provisions for converting signals from the fiber optic links 126 to either copper or fiber communication paths.
  • the present invention differs from the previous approaches in that the links 126 are fiber optic links as opposed to coaxial cables (or other copper conductors). Importantly, the fiber optic links 126 weigh about ⁇ fraction (1/10) ⁇ th that of the copper conductors that they replace.
  • the communication paths 130 will be dedicated for connection of carry-ons 134 to the network 120 .
  • the communications paths 132 will typically be dedicated to connection of the seat peripheral hosts 136 associated with the seats 18 (e.g., overhead consoles, speakers, diskless terminals or disk-based Tablet PCs used as seatback displays, television monitors, and the like) to the network 120 .
  • the current embodiment envisions dedicated connections for carry on and seat peripheral hosts 134 and 136 , respectively, the communications paths 130 and 132 need not be so dedicated to remain within the spirit and scope of the present invention.
  • FIG. 3 shows the in flight entertainment audio/visual decoder 152 for overhead displays networked with the other devices on the network 120 .
  • the data transceiver/router 154 and Internet server 156 cooperate to provide Internet connectivity to the mobile platform network 120 .
  • the cabin services subsystem may be connected to the network 120 via an appropriate interface 158 to transfer data, particularly voice data, and signals to and from the network 20 and the cabin services subsystem.
  • the network 120 incorporates many sources of data that previously existed in isolation on dedicated, customized systems (e.g. the cabin services system).
  • FIG. 4 shows two of the possible network topologies for the network 120 .
  • FIG. 4A shows a star topology while FIG. 4B shows a daisy topology.
  • a server 160 e.g., the Connexion By Boeing SM server 156 , the cabin services interface 158 , or the audio and visual on demand server 146 , and the like
  • the network fans out to the seat electronics boxes 128 in the star topology 162 via fiber optic cables 126 .
  • Each seat electronics box 128 provides one, or more, communication paths 130 or 132 for connection of peripheral hosts or carryons at the seats 18 .
  • the seat electronics boxes 128 may be associated with a particular row, or other grouping, of seats 166 .
  • the star topology utilizes very lightweight (relative to copper) fiber interconnects.
  • the distances of cable runs has very little effect on the system weight. This readily permits long distance “home run” interconnects from remotely located sources to individual seat groups, and minimizes the complexity, power, weight, and size of the seat electronics boxes cited in FIGS. 5A to 5 C since each seat or seat group is connected directly to port on a centralized area distribution box.
  • FIG. 4A illustrates the network connected in a star topology 162 between the area distribution box (ADB) and the seat electronics boxes 128 .
  • Each row of seats (or a portion thereof) may be a separate VLAN with access controlled at the ADB.
  • port protection may limit access between seats in a VLAN
  • FIG. 4B illustrates the network connected in a daisy topology 162 between the area distribution box (ADB) and a column of seat electronics boxes 128 .
  • Each column of seats may also be a separate VLAN with access controlled at the ADB.
  • Port protection limits access between seats in a VLAN.
  • FIG. 4B shows the fiber optic cables 126 connected in a daisy chain topology 164 between the area distribution box and the seat electronics boxes 128 .
  • 100Base-FX fiber optic data links and cables 126 are used for the star topology of FIG. 4A while 1000Base-SX fiber optic data links and cables 126 are used for the daisy topology of FIG. 4B.
  • the daisy topology is useful to simplify network installation and to simplify seat reconfiguration and the re-pitching of seat distances by the airlines.
  • Seat electronic boxes cited in FIGS. 5A to 5 C with switches and media converters supporting ⁇ fraction (10/100) ⁇ Mbps uplinks in a star topology are simpler, smaller, lower power, and less costly than other configurations of the seat electronic boxes.
  • switch technology and switch on chip technology evolves to better support 1 Gbps, the power, weight, and size difference between seat electronic boxes for the daisy and star topology is greatly reduced.
  • FIGS. 4A and 4B illustrate a power supply 168 for the network 120 .
  • a preferred location for the seat electronics boxes 128 is under a seat 18 in, or adjacent to, the group of seats 18 that the seat electronics box 128 serves. Cables between the seat electronics boxes 128 and the seats 18 , of course, may be routed in cable raceways, and along structures under or in the seats 18 .
  • the seat electronics boxes 128 may be configured in many different ways to provide network connectivity for the peripheral hosts 134 and carry-ons 136 (see for example FIG. 2 or 3 ).
  • FIG. 5 shows several exemplary configurations of the seat electronics units 128 .
  • FIGS. 5A, 5B, and 5 C trade seat box size and complexity, number of user and peripheral host devices supported per seat group, with ADB size and complexity for networks implemented with star topologies. Fewer uplinks from SEBs to ADBs reduce the number of ADBs, but increase the complexity of the SEBs. Increasing the number of uplinks from SEBs to ADBs from one per seat group to one per seat increases the number of ADBs, but greatly simplifies the SEBs, despite increasing their number. These guidelines form the basis of designs for an optimum power, weight, and size open system network infrastructure for aircraft cabins.
  • FIG. 5A illustrates a seat electronics box 128 A useful for connecting up to four peripheral hosts 134 (e.g. laptop computers or diskless terminal or disk based Tablet PCs used as seat back displays) to the network 120 .
  • the seat electronics box 128 A connects to one duplex fiber cable 126 A (preferably a 100 Mbps fiber data link) from the star network of FIG. 4A.
  • the seat electronics box 128 A connects to four copper cables 130 (preferably ⁇ fraction (10/100) ⁇ Mbps copper data links with a RJ- 45 connector).
  • the four cables 130 fan out to jacks on the seats either for connection by carry on peripheral hosts 134 or dedicated seat peripherals 136 .
  • the seat electronics unit 128 A includes one fiber optic to copper signal converter 170 A (i.e. media converter) to convert the optic signal from the fiber cable 126 A to an electromagnetic signal suitable for use with copper transmission paths (internally). Additionally, the seat electronics unit 128 A includes one by four switch 172 A to provide switched connectivity between the internal signal and the four cables 130 A.
  • fiber optic to copper signal converter 170 A i.e. media converter
  • the seat electronics unit 128 A includes one by four switch 172 A to provide switched connectivity between the internal signal and the four cables 130 A.
  • FIG. 5B illustrates a seat electronics box 128 B with enhanced data connectivity.
  • the seat electronics unit 128 B provides connectivity between 3 fiber optic cables 126 B (to one to three area electronics boxes 122 B) and 12 copper cables 126 B.
  • the seat electronics box 128 B includes three media converters 170 B and three switches 172 B. Since the switches 170 B may be 1 by 4 switches (as in seat electronics boxes 128 A), the switches 172 B allow various connection configurations between the copper cables 130 B and the fiber cables 126 B.
  • the seat electronics box 128 B provides for virtual local area networks to the users at the seats 18 .
  • FIG. 5C shows another seat electronics box 128 C in accordance with another embodiment of the present invention.
  • Seat electronics box 128 C provides connectivity between one fiber cable 126 C and six (or eight) copper cables 130 C. Accordingly, the seat electronics box 128 C includes one media converter 170 C and one by six (or eight, or greater) switch 172 C. Accordingly, the seat electronics box 128 C also provides for virtual local area networks within itself. Additionally, the seat electronics box 128 C may provide quality of service management for the peripherals connected to it.
  • a seat electronics box 128 D provides connectivity between one 1000 Mbps fiber cable 126 D on one side and one 1000 Mbps fiber cable 126 D connected on the other side in a daisy chain network topology to subsequent seat electronic boxes.
  • Six (6) copper cables 130 D provide ⁇ fraction (10/100) ⁇ connectivity to peripherals in a seat group.
  • the seat electronics box includes two media converters and a multi-gigabit switch to manage the conversion of the signals and connectivity for the peripherals 134 and 136 .
  • the seat electronics box 128 D provides for virtual local area networks and quality of service management.
  • FIG. 6A shows a portion of a star embodiment. From an area distribution box 222 A, a 12-fiber (optic) ribbon cable 274 A leads to a breakout box 276 A. The breakout box 276 A fans the ribbon cable 274 A out to 12 simplex fibers 278 A. Out to the ends of the simplex fibers 274 A, the cables have been routed under the floor.
  • a 12-fiber (optic) ribbon cable 274 A leads to a breakout box 276 A.
  • the breakout box 276 A fans the ribbon cable 274 A out to 12 simplex fibers 278 A. Out to the ends of the simplex fibers 274 A, the cables have been routed under the floor.
  • duplex LC connectors 280 A (one for each pair of simplex fibers 278 A), at the floor interface 279 A, allow a set of cables 282 A to fan out in a star configuration.
  • the cables 182 A connect to the seat electronics boxes 228 in a star configuration.
  • FIG. 6B shows a portion of a daisy embodiment.
  • a 12-fiber (optic) ribbon cable 274 B leads to a breakout box 276 B.
  • the breakout box 276 B fans the ribbon cable 274 B out to 4 simplex fibers 278 B.
  • the cables have been routed under the floor.
  • duplex LC connectors 280 B (one for each pair of simplex fibers 278 B), at the floor interface 279 B, allow a set of cables 282 B to connect to the first and least seat electronics boxes 228 in a column in a daisy configuration.
  • the star topology of FIG. 6A contains six cables 282 A at a floor interface 279 A while the daisy topology of FIG. 6B contains two cables at a floor interface 279 B. Accordingly, the floor interface 279 A is more complex.
  • the use of fiber connector arrays lessen the complexity of the floor interface 279 A.
  • the daisy topology (FIG. 4B) has the advantage that a branched cable does not exist (and therefore requires little or no maintenance) in the relatively hard to access cable raceways under the seats on the of the aircraft. This is important in contrast to ground base, open networks that enjoy relatively easy access to all areas of the ground based network.
  • the ribbon cables used here include silicone rubber jackets to improve certain factors that are controlled onboard aircraft such as flammability, toxicity, and out gassing.
  • the use of the ribbon cables for the cables 274 minimizes the number of cables on the aircraft. Moreover, because the ribbon cables are robust, they are also generally used in harsh locations. Likewise, the ribbon cables are generally used for long distance runs within the aircraft (e.g. more than about 150 feet), particularly where accessibility may be time consuming. Thus, the ribbon cables lower installation and maintenance costs associated with the aircraft. Additionally, fiber optic jumpers are generally employed to complete the network connections between the floor interfaces 279 and the seat electronics boxes.
  • the present invention provides a switched, high bandwidth, open, Internet protocol based network that supports bandwidth intensive in flight entertainment services. These services include audio-video on demand (AVOD) as well as emerging Internet services enabled by broadband air-to-ground connectivity to the Internet.
  • AVOD audio-video on demand
  • emerging Internet services enabled by broadband air-to-ground connectivity to the Internet.
  • the present embodiment includes a switched, high bandwidth, cabin network based on two-tier LAN architecture.
  • the upper tier of the LAN may be based on OSI layer-3 switches. These switches may be mounted in centralized wiring closets on board the aircraft and may be referred to as area distribution boxes (ADBs).
  • the ADBs may manage the network from a host with a browser including managing security (e.g., configuring routing between virtual LANs provided for the passengers via access lists).
  • ADBs may also support managed quality of service for the entire system. Ports on these ADBs will also provide centralized access to satellite receiver/data routers, CoreNets, media servers, and wireless LAN access points.
  • the lower tier of the LAN may include OSI layer-2 LAN switches to provide the passengers with either a single, or multiple, switched port to access the network.
  • the level-2 switches also known as Seat Electronics Boxes (SEBs) also provide the passengers with a VLAN per protected switch port to ensure security for the passenger and scalability of the system. It should be noted that when one port per passenger (or seat) is provided, the layer-2 switch could be dispensed with. However, in such embodiments the use of a level-2 switch is desirable to minimize the number of ports needed in the upper tier switches.
  • a layer-2 switch may also be provided. Accordingly, one port may be allocated to supporting passenger peripherals (e.g., laptop personal computers, personal digital assistants, or passenger control units. Another port then may be allocated to a Tablet PC-like device that may serve as an intelligent seat back display.
  • passenger peripherals e.g., laptop personal computers, personal digital assistants, or passenger control units.
  • Another port then may be allocated to a Tablet PC-like device that may serve as an intelligent seat back display.
  • the wiring between ADBs may be low cost, duplex, high bandwidth (e.g. 1 Gbps) optical fiber links that have been certified for aircraft applications.
  • 1000Base-SX data links and fiber cable is employed.
  • low cost duplex, high bandwidth optical fiber links may also be used.
  • the cable runs may be terminated at the floor or sidewall disconnects by passive in-line connectors.
  • fiber links offer several benefits over conventional twin axial and quad copper cables.
  • these types of cables are limited to 100 Mbps bandwidth on aircraft due to electronic shielding requirements.
  • the bandwidth-distance capabilities are higher for multimode optical fiber and many orders of magnitude higher for single mode optical fiber cable than copper cable.
  • dual quad copper cable will support 1 Gbps once demonstrated for cabin service.
  • fiber provides a scalable interconnect that is still is very affordable relative to copper.
  • the conventional (copper) links require costly terminations and heavy shielding to meet aircraft cabin electronic shielding requirements. Since it does not require shielding and can be bundled in common jackets, fiber provides a link that, at most, weighs ⁇ fraction (1/10) ⁇ the weight of a similar length (and less capable) conventional, copper-based link.
  • each layer-2 switch i.e., the seat electronics boxes
  • a return data link to an ADB may be provided to ensure that an Ethernet Spanning Tree Protocol (STP) can reconfigure the network to ensure continued interconnectivity among the remaining SEBs in the daisy chain if one SEB fails.
  • STP Spanning Tree Protocol
  • the present embodiment also provides a fault tolerant, mobile platform network.
  • the lightweight and capability to bundle multiple fibers in a single jacket also make it possible to provide a direct run uplink from every SEB to ports on the ADB. Moreover, because of the lightweight fiber link almost no weight penalty (relative to the daisy interconnect topology described above) occurs. Accordingly, the SEBs may be simplified in accordance with the present embodiment.
  • USB cables may be used to connect audio and voice peripherals to the SEBs.
  • Bluetooth ports may be provided.
  • using Bluetooth to connect the personal peripherals to hosts connected to the networked SEBs significantly simplifies, if not eliminates, the in-seat wiring.
  • the weight and complexity of the aircraft seats may be reduced in accordance with the principles of the present embodiment.
  • the seat electronics boxes may be connected to the area distribution boxes in either a star configuration or a daisy configuration as illustrated in FIG. 5C for a star topology and FIG. 5D for a daisy topology.
  • the aircraft networks configured in a daisy topology in accordance with the principles of the present invention provide aircraft level weight savings (compared to an aircraft employing closed in flight entertainment, cabin services, and local area network subsystems) of approximately:
  • the present invention provides a power savings (that translates to aircraft fuel requirements) with the daisy topology (compared to an aircraft employing closed in flight entertainment, cabin services, and local area network subsystems) of approximately:
  • a typical group of seats 318 is illustrated. Under one, or more, of the seats 318 a seat electronics box 328 provides switched connectivity for the passengers in the seats 318 , as described herein.
  • power ports 330 ⁇ fraction (10/100) ⁇ RJ-45 jacks 332 to peripheral hosts and carry-ons, USB jacks for audio and telephone headsets 334 , USB jacks for network connectivity of carry-ons 336 , fiber connectors 338 , and 3.5 mm jacks for conversion of analog headsets to digital USB by an embedded A/D converter are illustrated.
  • USB cabling from Tablet PCs mounted on the seat backs 342 , on a bulkhead 344 , to passengers through connectors on the armrests 346 , and on consoles 348 between adjacent seats 318 .
  • Other locations for the connectors include, for example, under the seats 318 and on overhead control units.
  • networks in accordance with the principles of the present invention are secure and scaleable to any size of aircraft or other mobile platform.
  • the present invention facilitates introduction of new services (e.g., single and multi-player on-line games) and will greatly reduce the weight and cost of cabling used in the cabin while providing superior EMI (Electro-Magnetic Interference) and ground loop resistance over that of the previously available, closed, proprietary systems.
  • EMI Electro-Magnetic Interference

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
US10/745,258 2003-05-21 2003-12-22 High bandwidth open wired network Abandoned US20040235469A1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US10/745,258 US20040235469A1 (en) 2003-05-21 2003-12-22 High bandwidth open wired network
BRPI0410481-1A BRPI0410481A (pt) 2003-05-21 2004-05-20 rede adequada para uma plataforma móvel para conter uma pluralidade de dispositivos periféricos, plataforma móvel na qual se encontram alojados uma pluralidade de dispositivos periféricos, e método de distribuição de informações em uma plataforma móvel destinada a conter uma pluralidade de dispositivos periféricos
CN2004800137776A CN1792046B (zh) 2003-05-21 2004-05-20 高带宽开放式有线网络
JP2006514921A JP2006526366A (ja) 2003-05-21 2004-05-20 高帯域かつオープンな配線ネットワーク
PCT/US2004/016037 WO2005032003A2 (en) 2003-05-21 2004-05-20 High bandwidth open wired network
CA2525380A CA2525380C (en) 2003-05-21 2004-05-20 High bandwidth open wired network
EP04809394.2A EP1625676B1 (de) 2003-05-21 2004-05-20 Onboard-lan-netzwerk für eine mobile plattform
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WO2005032003A2 (en) 2005-04-07
CN1792046B (zh) 2011-12-28
US20140056292A1 (en) 2014-02-27
EP1625676B1 (de) 2013-04-17
BRPI0410481A (pt) 2006-06-13
CA2525380A1 (en) 2005-04-07
CN1792046A (zh) 2006-06-21
US9420629B2 (en) 2016-08-16
JP2006526366A (ja) 2006-11-16
EP1625676A2 (de) 2006-02-15
CA2525380C (en) 2012-03-27
JP2011068350A (ja) 2011-04-07

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