US20040235469A1 - High bandwidth open wired network - Google Patents

Abstract

An open network suitable for a mobile platform that contains a plurality of host and peripheral devices. Within the network, a central server communicates with at least one switch. In turn, a plurality of network devices communicate with the switch. In turn, a plurality of host devices connect to network devices; Thus, each of the plurality of peripheral devices communicates with one of the host devices. Moreover, the mobile platform may be an aircraft including a control panel to control the network. Additionally, a CoreNet and the in flight entertainment and cabin services subsystem may be in communication with the network. Additionally, the network may include a satellite transceiver/data router. In one embodiment, the peripherals use Bluetooth protocol devices to communicate with host devices on a virtual local area network within the network. The virtual network controls the security and quality of service of the network that interconnects the host, and other, devices.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS
• This application claims the benefit of U.S. Provisional Patent Application No. 60/472,575, filed May 21, 2003.[0001]
FIELD OF THE INVENTION
• 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.[0002]
BACKGROUND OF THE INVENTION
• Commercial aircraft in widespread use today, include numerous cabin systems for the benefit and convenience of the passengers. These systems, for example, include the In Flight Entertainment (IFE) and Cabin Services Systems (CSS). The suppliers of these individual systems typically design their systems in isolation from each other. Accordingly, while the weight, power consumption, and capabilities of each system might be optimized, the previously developed systems neglect to address aircraft-level weight, power, and other important factors associated with these systems. Thus, there remains a need to optimize the cabin systems with respect to the aircraft as a whole.[0003]
• In particular, 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. Moreover, these types of cables tend to be difficult to install because of the bulky and difficult to terminate connectors that they require. Worse still, these cable types are bandwidth limited due to aircraft cabin electrical shielding requirements. Furthermore, since 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.[0004]
• Meanwhile, with the widespread availability of consumer electronics, aircraft passengers have begun bringing network compatible devices (e.g., laptop computers and personal digital devices) onboard aircraft to entertain themselves during their flights. Unfortunately, for the passenger, conventional IFE systems are generally incompatible with these information technology compatible devices. Thus, the convergent entertainment technologies becoming available on the Internet (e.g., multimedia information and multi-player Internet games) remain effectively out of reach of aircraft passengers.[0005]
• Thus, the prior art systems fail to support the convergent services that are increasingly sought by aircraft passengers.[0006]
SUMMARY OF THE INVENTION
• 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. In general, the open network, and associated methods, provided herein replace the previous technology that included many parallel systems thereby creating weight, power, and space savings. Moreover, the present invention provides for more convenient network upgrades, maintenance, modifications, and additions. Additionally, 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.[0007]
• More particularly, 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. The passenger interface to the system, in one preferred form, is through a combination of switches and host clients that provide the passengers robust audio, voice and control via, for example, USB connections.[0008]
• Briefly, the switched, high bandwidth, aircraft cabin networks provided by the present invention 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.[0009]
• Moreover, 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.[0010]
• In a preferred embodiment, the present invention provides an open network suitable for a mobile platform that contains a plurality of peripheral devices. Within the network, a central server communicates with at least one switch. In turn, a plurality of network devices communicates with the switch. Thus, each of the plurality of host and personal peripheral devices communicates with one of the network devices. Moreover, the mobile platform may be an aircraft including a control panel to control the network. Additionally, 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. To extend the network to the Internet via satellite transponder/data router, the network may also include a satellite data transceiver as part of the antenna subsystem. In one embodiment, 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[0011]
• In another embodiment, the present invention provides a mobile platform that contains a plurality of host and personal peripheral devices and an open network. Within the network, a central server communicates with at least one switch. In turn, a plurality of network devices communicates with the switch. Thus, each of the plurality of peripheral host and personal devices communicates with one of the network devices. Moreover, the mobile platform may be an aircraft including a control panel to control the network. Additionally, 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. To extend the network to the Internet via satellite transponder/data router, the network may include a satellite data transceiver as part of the antenna subsystem. In one embodiment, the personal peripherals (eg. headphones, microphones, keyboards, and personal control units) 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.[0012]
• The features, functions, and advantages can be achieved independently in various embodiments of the present inventions or may be combined in yet other embodiments.[0013]
BRIEF DESCRIPTION OF THE DRAWINGS
• The present invention will become more fully understood from the detailed description and the accompanying drawings, wherein:[0014]
• FIG. 1 is a top plan view of an aircraft in accordance with the principals of the present invention;[0015]
• FIG. 2 is a block diagram of a network of the aircraft of FIG. 1;[0016]
• FIG. 3 is an architecture diagram of another aircraft network in accordance with the present invention;[0017]
• FIG. 4 is a top plan view of portions of another network in accordance with the present invention;[0018]
• FIG. 5 is a block diagram of seat electronics boxes of the networks of FIGS.[0019]2 to4;
• FIG. 6 is a block diagram of networking cabling in accordance with the principles of the present invention; and[0020]
• FIG. 7 is a schematic view of an aircraft seat in accordance with the principles of the present invention.[0021]
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
• The following description of the preferred embodiment(s) is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.[0022]
• Turning now to the figures in general, and FIG. 1 in particular, a mobile platform[0023]10 (e.g., aircraft) in accordance with the principles of the present invention is illustrated. Included within theaircraft10, FIG. 1 illustrates acabin12 with passenger andcrew sections14 and16, respectively. A plurality ofseats18 provides places for the passengers to relax or work during the flight of theaircraft10. It is worth noting now that theseats18 typically come grouped in twos or threes with a center aisle between adjacent groupings.
• The[0024]aircraft10 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. Additionally, 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.
• With the widespread availability of laptop computers, personal digital assistants, Wi-Fi/cellular phones, and the like, many passengers find it convenient to work (or entertain themselves) while seated in their[0025]seat18. Moreover, The Boeing Company is offering the Connexion By Boeing^SM service onboard someaircraft10 to provide Internet connectivity for the digital devices carried on board theaircraft10 by the passengers.
• As will be appreciated, connecting all of the devices and subsystems, discussed herein, on one open network saves development time, effort, and expense for the[0026]overall aircraft10 and over the life cycle of the various devices and subsystems. One integrated, open system also reducesoverall aircraft10 weight and energy consumption. Accordingly, FIG. 2 illustrates a preferred embodiment of such anopen network20 suitable for use on amobile platform10 and that reducesmobile platform10 weight, power consumption, and development time and expense.
• The[0027]open network20 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 cables24. Additionalfiber optic links26 network a plurality of seat electronics boxes (SEB)28 to the area distribution boxes22. The seat electronics boxes28 generally include media converters and anOSI Layer 2 or 3 switch as will be discussed more thoroughly herein. In turn, communications paths30 and32, in turn, connect various digital host user devices34 (i.e., carry-on laptop, personal digital assistants, and smartphones host user devices) and dedicated seat peripheral host devices36, respectively, attached to the seat electronics boxes28.
• Additionally, a[0028]control panel38 may be used to configure, control, and administer thenetwork20. In a preferred embodiment, a “CoreNet”unit42 may be interposed between thecontrol panel38 and the remainder of thenetwork20. The CoreNet performs functions similar to those of a gateway between the crew information systems (that thecontrol panel38 resides in) and the remainder of thenetwork20 that primarily serves the crew cabin. The advantages of interposing theCoreNet unit42 are thatCoreNet units42 manage the flow of information across thenetwork20. Accordingly, using theCoreNet42 as a gateway and firewall enhances the capability to administer, monitor, and control thenetwork20 from thecontrol panel38. Of course, while FIG. 2 illustrates theCoreNet unit42 interposed between thecontrol panel38 and thenetwork20 viacopper connections40 and44, the present invention is not so limited. For instance, thecontrol panel38 and theCoreNet unit42 may be connected in parallel to the remainder of thenetwork20.
• FIG. 2 also shows an audio and video on[0029]demand server46 connected to thenetwork20 viafiber connection48. In previous systems, 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. In the alternative, 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.). Nor can 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.
• Worse still, each change to these conventional systems must be re-certified for each type of aircraft. Furthermore, because each of these previous systems is developed for the most independently of other components or systems (i.e., without regard for other systems), the[0030]overall aircraft10 cannot be optimized for weight, power, use of internal space, and the like. In contrast, the present invention optimizes theoverall aircraft10 by networking these systems in anopen network20 onboard theaircraft10.
• Thus, the present invention provides an[0031]open network20 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 thenetwork20 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.
• With reference to FIG. 3, another embodiment of the present invention including an open network suitable for use on a mobile platform is illustrated. The[0032]network120 includes several area distribution boxes122 (switches) networked together viafiber optic cables124. Also shown, are groups of seat electronic boxes128 (i.e., network devices). Theseat electronics boxes128 each correspond to a seat group of one ormore seats18 of the aircraft10 (see FIG. 1). In the present embodiment, theseat electronics boxes128 areOSI Layer 2 switches with provisions for converting signals from thefiber optic links126 to either copper or fiber communication paths. Notably, the present invention differs from the previous approaches in that thelinks126 are fiber optic links as opposed to coaxial cables (or other copper conductors). Importantly, thefiber optic links126 weigh about {fraction (1/10)}^ththat of the copper conductors that they replace.
• Generally, the[0033]communication paths130 will be dedicated for connection of carry-ons134 to thenetwork120. Likewise, thecommunications paths132 will typically be dedicated to connection of the seat peripheral hosts136 associated with the seats18 (e.g., overhead consoles, speakers, diskless terminals or disk-based Tablet PCs used as seatback displays, television monitors, and the like) to thenetwork120. While, the current embodiment envisions dedicated connections for carry on and seat peripheral hosts134 and136, respectively, thecommunications paths130 and132 need not be so dedicated to remain within the spirit and scope of the present invention.
• Additionally, FIG. 3 shows the in flight entertainment audio/[0034]visual decoder152 for overhead displays networked with the other devices on thenetwork120. Likewise, the data transceiver/router154 and Internet server156 (e.g. Connexion By Boeing^SM) cooperate to provide Internet connectivity to themobile platform network120. Moreover, the cabin services subsystem may be connected to thenetwork120 via anappropriate interface158 to transfer data, particularly voice data, and signals to and from thenetwork20 and the cabin services subsystem. Thus, thenetwork120 incorporates many sources of data that previously existed in isolation on dedicated, customized systems (e.g. the cabin services system).
• Turning now to the network connectivity at the[0035]seats18, FIG. 4 shows two of the possible network topologies for thenetwork120. FIG. 4A shows a star topology while FIG. 4B shows a daisy topology. In particular, a server160 (e.g., the Connexion By Boeing^SM server156, thecabin services interface158, or the audio and visual ondemand server146, and the like) is shown providing content to thenetwork120. From thearea distribution box122, the network fans out to theseat electronics boxes128 in thestar topology162 viafiber optic cables126. Eachseat electronics box128, in turn, provides one, or more,communication paths130 or132 for connection of peripheral hosts or carryons at theseats18. Note that theseat electronics boxes128 may be associated with a particular row, or other grouping, ofseats166.
• 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[0036]5C 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[0037]star topology162 between the area distribution box (ADB) and theseat electronics boxes128. Each row of seats (or a portion thereof) may be a separate VLAN with access controlled at the ADB. Note that port protection may limit access between seats in a VLAN FIG. 4B illustrates the network connected in adaisy topology162 between the area distribution box (ADB) and a column ofseat electronics boxes128. 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[0038]fiber optic cables126 connected in adaisy chain topology164 between the area distribution box and theseat electronics boxes128. In preferred embodiments, 100Base-FX fiber optic data links andcables126 are used for the star topology of FIG. 4A while 1000Base-SX fiber optic data links andcables126 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[0039]5C 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. As 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.
• Additionally, both FIGS. 4A and 4B illustrate a[0040]power supply168 for thenetwork120. Note also, that a preferred location for theseat electronics boxes128 is under aseat18 in, or adjacent to, the group ofseats18 that theseat electronics box128 serves. Cables between theseat electronics boxes128 and theseats18, of course, may be routed in cable raceways, and along structures under or in theseats18.
• The[0041]seat electronics boxes128 may be configured in many different ways to provide network connectivity for the peripheral hosts134 and carry-ons136 (see for example FIG. 2 or3). FIG. 5 shows several exemplary configurations of theseat electronics units128. In essence, FIGS. 5A, 5B, and5C 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.
• For instance, FIG. 5A illustrates a[0042]seat electronics box128A useful for connecting up to four peripheral hosts134 (e.g. laptop computers or diskless terminal or disk based Tablet PCs used as seat back displays) to thenetwork120. Preferentially, theseat electronics box128A connects to oneduplex fiber cable126A (preferably a 100 Mbps fiber data link) from the star network of FIG. 4A. Additionally, theseat electronics box128A connects to four copper cables130 (preferably {fraction (10/100)} Mbps copper data links with a RJ-45 connector). In turn, the fourcables130 fan out to jacks on the seats either for connection by carry on peripheral hosts134 or dedicated seat peripherals136.
• The[0043]seat electronics unit128A includes one fiber optic tocopper signal converter170A (i.e. media converter) to convert the optic signal from thefiber cable126A to an electromagnetic signal suitable for use with copper transmission paths (internally). Additionally, theseat electronics unit128A includes one by fourswitch172A to provide switched connectivity between the internal signal and the fourcables130A.
• FIG. 5B illustrates a[0044]seat electronics box128B with enhanced data connectivity. Notably, theseat electronics unit128B provides connectivity between 3fiber optic cables126B (to one to threearea electronics boxes122B) and12copper cables126B. Accordingly, theseat electronics box128B includes threemedia converters170B and threeswitches172B. Since theswitches170B may be 1 by 4 switches (as inseat electronics boxes128A), theswitches172B allow various connection configurations between thecopper cables130B and thefiber cables126B. Thus, theseat electronics box128B provides for virtual local area networks to the users at theseats18.
• FIG. 5C shows another[0045]seat electronics box128C in accordance with another embodiment of the present invention. Seat electronics box128C provides connectivity between onefiber cable126C and six (or eight)copper cables130C. Accordingly, theseat electronics box128C includes onemedia converter170C and one by six (or eight, or greater)switch172C. Accordingly, theseat electronics box128C also provides for virtual local area networks within itself. Additionally, theseat electronics box128C may provide quality of service management for the peripherals connected to it.
• In another preferred embodiment, a[0046]seat electronics box128D provides connectivity between one 1000Mbps fiber cable126D on one side and one 1000Mbps fiber cable126D connected on the other side in a daisy chain network topology to subsequent seat electronic boxes. Six (6)copper cables130D provide {fraction (10/100)} connectivity to peripherals in a seat group. Accordingly, the seat electronics box includes two media converters and a multi-gigabit switch to manage the conversion of the signals and connectivity for the peripherals134 and136. Accordingly, theseat electronics box128D provides for virtual local area networks and quality of service management.
• Turning now to the hardware preferred to create the star and daisy topologies as previously discussed, reference is now made to FIG. 6. The cabling approach illustrated provides identical cabling between the ADB and the floor breakout that is independent of seat wiring topology. The ADB can be designed to provide a high-density fiber wiring closet that will support either topology. In particular, FIG. 6A shows a portion of a star embodiment. From an[0047]area distribution box222A, a 12-fiber (optic)ribbon cable274A leads to abreakout box276A. Thebreakout box276A fans theribbon cable274A out to 12simplex fibers278A. Out to the ends of thesimplex fibers274A, the cables have been routed under the floor. However,duplex LC connectors280A (one for each pair ofsimplex fibers278A), at thefloor interface279A, allow a set ofcables282A to fan out in a star configuration. In turn, the cables182A connect to the seat electronics boxes228 in a star configuration.
• In comparison, FIG. 6B shows a portion of a daisy embodiment. From an[0048]area distribution box222B, a 12-fiber (optic)ribbon cable274B leads to abreakout box276B. Thebreakout box276B fans theribbon cable274B out to 4simplex fibers278B. Out to the ends of thesimplex fibers274B, the cables have been routed under the floor. However,duplex LC connectors280B (one for each pair ofsimplex fibers278B), at thefloor interface279B, allow a set ofcables282B to connect to the first and least seat electronics boxes228 in a column in a daisy configuration.
• Thus, the star topology of FIG. 6A contains six[0049]cables282A at afloor interface279A while the daisy topology of FIG. 6B contains two cables at afloor interface279B. Accordingly, thefloor interface279A is more complex. Though it should be noted that the use of fiber connector arrays lessen the complexity of thefloor interface279A. Additionally, 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. Note should also be made that 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[0050]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 interfaces279 and the seat electronics boxes.
• In another preferred embodiment, 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.[0051]
• 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.[0052]
• At each group of seats (typically 2 or 3 seats in a row), 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.[0053]
• In embodiments providing two (or more) ports per passenger, though, 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.[0054]
• The wiring between ADBs (are distribution boxes) may be low cost, duplex, high bandwidth (e.g. 1 Gbps) optical fiber links that have been certified for aircraft applications. In a preferred embodiment, 1000Base-SX data links and fiber cable is employed. For the interconnection between the ADBs and floor or sidewall disconnects, 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.[0055]
• The use of fiber links offers several benefits over conventional twin axial and quad copper cables. First, 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. With suitable terminations, dual quad copper cable will support 1 Gbps once demonstrated for cabin service. Second, fiber provides a scalable interconnect that is still is very affordable relative to copper. Moreover, 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.[0056]
• Additionally, the same type of optical links may be used to interconnect the SEBs in a daisy chain topology (or star or other network configurations) to support seat-to-seat cabling. Thus, each layer-2 switch (i.e., the seat electronics boxes), may support an uplink and a downlink port to adjacent SEBs in the daisy chain. Moreover, 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. Accordingly, the present embodiment also provides a fault tolerant, mobile platform network.[0057]
• In yet another embodiment, 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.[0058]
• For the in-seat wiring, USB cables may be used to connect audio and voice peripherals to the SEBs. In the alternative, Bluetooth ports may be provided. Advantageously, using Bluetooth to connect the personal peripherals to hosts connected to the networked SEBs significantly simplifies, if not eliminates, the in-seat wiring. Thus, the weight and complexity of the aircraft seats may be reduced in accordance with the principles of the present embodiment.[0059]
• In still other preferred embodiments, 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. Accordingly, 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:[0060]
• 200 lbs for 150 seats;[0061]
• 360 lbs for 250 seats; and[0062]
• 570 lbs for 400 seats.[0063]
• For aircraft networks configured in a daisy topology (compared to an aircraft employing future next generation closed in flight entertainment, cabin services, and local area network subsystems) the weight savings are approximately:[0064]
• 100 lbs for 150 seats;[0065]
• 190 lbs for 250 seats; and[0066]
• 300 lbs for 400 seats.[0067]
• Likewise, 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:[0068]
• 2 KW for 150 seats;[0069]
• 3.5 KW for 250 seats; and[0070]
• 6 KW for 400 seats.[0071]
• For the daisy topology, the corresponding power savings (compared to an aircraft employing future next generation closed in flight entertainment, cabin services, and local area network subsystems) are approximately:[0072]
• 0.6 KW for 150 seats;[0073]
• 0.8 KW for 250 seats; and[0074]
• 1.5 KW for 400 seats.[0075]
• With reference now to FIG. 7, a typical group of[0076]seats318 is illustrated. Under one, or more, of the seats318 aseat electronics box328 provides switched connectivity for the passengers in theseats318, as described herein. In particular,power ports 330, {fraction (10/100)} RJ-45jacks332 to peripheral hosts and carry-ons, USB jacks for audio andtelephone headsets334, USB jacks for network connectivity of carry-ons336,fiber connectors338, and 3.5 mm jacks for conversion of analog headsets to digital USB by an embedded A/D converter are illustrated. The variety of USB connections is provided by USB cabling from Tablet PCs mounted on the seat backs342, on abulkhead344, to passengers through connectors on thearmrests346, and onconsoles348 betweenadjacent seats318. Though, other locations for the connectors include, for example, under theseats318 and on overhead control units.
• Additionally, networks in accordance with the principles of the present invention are secure and scaleable to any size of aircraft or other mobile platform. Moreover, 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.[0077]
• While various preferred embodiments have been described, those skilled in the art will recognize modifications or variations which might be made without departing from the inventive concept. The examples illustrate the invention and are not intended to limit it. Therefore, the description and claims should be interpreted liberally with only such limitation as is necessary in view of the pertinent prior art.[0078]

Claims (43)

1. A network suitable for a mobile platform to contain a plurality of peripheral devices, comprising:

a central server;

at least one switch to communicate with the server;

a plurality of network devices to communicate with the switch; and

a plurality of host devices to communicate with the network devices, the plurality of peripheral devices to communicate with at least one of the host devices, the network being open.

2. The network according toclaim 1, wherein the mobile platform comprises an aircraft.

3. The network according toclaim 1, further comprising a control panel to communicate with the switch and to administer the network.

4. The network according toclaim 1, further comprising an in route entertainment server to communicate with the switch.

5. The network according toclaim 1, further comprising a gateway to communicate with the switch.

6. The network according toclaim 1, further comprising a satellite transceiver to communicate with the switch.

7. The network according toclaim 1, wherein one of the host devices further comprises at least one port, the host device allows one of the plurality of peripheral devices to communicate with the switch via the port, the host device is associated with at least one seat on the mobile platform, and wherein the peripheral accesses at least one of audio data and video data.

8. The network according toclaim 7, further comprising at least one of an audio, video, and telephone application software installed in the host device, the host device operating to access at least one of audio, video, and telephone data respectively.

9. The network according toclaim 1, further comprising a Bluetooth protocol communication link between the plurality of peripheral devices and the at least one of the host devices.

10. The network according toclaim 1, wherein at least one of the host devices further comprises a virtual local area network, and wherein the host device controls the security and the quality of service of the network for the peripheral devices.

11. The network according toclaim 1, further comprising a ribbon fiber cable between the plurality of host devices and the switch to allow communication therebetween.

12. A mobile platform housing a plurality of peripheral devices, the mobile platform comprising:

an open network communicating with a component of the mobile platform and including:

a central server;

at least one switch to communicate with the server;

a plurality of network devices to communicate with the switch; and

a plurality of host devices to communicate with the network device, the plurality of peripheral devices communicating with at least one of the host devices.

13. The mobile platform according toclaim 12, wherein the mobile platform comprises an aircraft.

14. The mobile platform according toclaim 12, further comprising a control panel to communicate with the switch and to administer the network.

15. The mobile platform according toclaim 12, further comprising an in-flight-entertainment server to communicate with the switch.

16. The mobile platform according toclaim 12, further comprising a gateway to communicate with the switch.

17. The mobile platform according toclaim 12, further comprising a satellite transceiver to communicate with the switch.

18. The mobile platform according toclaim 12, wherein one of the host devices further comprises at least one port, the host device enabling one of the plurality of peripheral devices to communicate with the switch via the port, wherein the host device is associated with at least one seat on the mobile platform and wherein the peripheral accesses at least one of audio data and video data.

19. The mobile platform according toclaim 12, further comprising at least one of an audio, video, and telephone application software installed in the host device, and wherein the host device is used to access at least one of audio data, video data, or telephone data.

20. The mobile platform according toclaim 12, further comprising a Bluetooth protocol communication link between the plurality of peripheral devices and the at least one of the host devices.

21. The mobile platform according toclaim 12, wherein at least one of the host devices further comprises a virtual local area network, the host device controlling the security and the quality of service of the network for the peripheral devices.

22. The mobile platform according toclaim 12, further comprising a ribbon fiber cable between the plurality of host devices and the switch to allow communication therebetween.

23. A method of distributing information on a mobile platform to contain a plurality of peripheral devices, comprising:

placing a central server, a switch, a plurality of network devices, and a plurality of host devices on the mobile platform;

configuring the switch to communicate with the server;

configuring the network devices to communicate with the switch;

configuring the host devices to communicate with the network devices; and

configuring the host devices to communicate with at least one of the peripheral devices, thereby creating an open network on the mobile platform.

24. The method according toclaim 23, further comprising configuring the switch to communicate with a control panel to administer the network.

25. The method according toclaim 23, further comprising configuring the switch to communicate with an in-flight-entertainment server.

26. The method according toclaim 23, further comprising configuring the switch to communicate with a gateway.

27. The method according toclaim 23, further comprising configuring the switch to communicate with a satellite data transceiver.

28. The method according toclaim 23, further comprising configuring a port of one of the host devices to allow one of the plurality of peripheral devices to communicate with the switch, wherein the host device is associated with a seat on the mobile platform to obtain at least one of audio and visual data.

29. The method according toclaim 23, further comprising installing at least one of audio, video, and telephone application software on at least one host device, and using the host device to access at least one of audio, video, and telephone data respectively with one of the peripheral devices.

30. The method according toclaim 23, further comprising configuring at least one of the peripheral devices to communicate with at least one of the peripheral devices via a Bluetooth protocol communication link.

31. The method according toclaim 23, further comprising configuring at least one of the host devices to provide a virtual local area network to control a security and a quality of service for the peripheral devices.

32. The method according toclaim 23, further comprising configuring the network to allow communication between the switch and the plurality of host devices over a ribbon fiber cable.

33. An open network onboard a mobile platform, the network comprising:

at least one server;

at least one switch configured to communicate with the server;

a plurality of network devices configured to communicate with the switch, each said network device being associated with a particular grouping of one or more seats onboard the mobile platform; and

a plurality of hosts configured to communicate with the network devices, at least one of the hosts also being configured to communicate with at least one peripheral device, the hosts including at least one of a portable host and a host coupled to mobile platform structure.

34. The network according toclaim 33, wherein at least one of the hosts comprises one of:

a personal electronic device of a user traveling onboard the mobile platform; and

an intelligent seatback display mounted to a seatback onboard the mobile platform.

35. The network according toclaim 33, wherein:

the switch comprises at least one area distribution box; and

the network devices comprise a plurality of seat electronics boxes each of which is associated with a particular grouping of one or more seats onboard the mobile platform.

36. The network according toclaim 33, wherein:

the switch comprises an OSI Layer 3;

the network devices comprise a plurality of OSI Layer 2 switches each of which is associated with a particular grouping of one or more seats onboard the mobile platform; and

each seat location includes at least one switched port to access the network.

37. The network according toclaim 33, wherein each seat location onboard the mobile platform includes a plurality of switched ports to access the network comprising:

at least one switched port allocated to supporting one of a portable host and a peripheral device; and

at least one other switched port allocated to supporting a host coupled to mobile platform structure.

38. The network according toclaim 33, wherein the network devices comprise at least one switch and at least one media converter.

39. The network according toclaim 33, further comprising at least one fiber optic cable enabling communication between the switch and the network device.

40. The network according toclaim 33, wherein the network is configured in one of a star topology and a daisy topology between the switch and the network devices.

41. The network according toclaim 33, wherein the network comprises a virtual local area network for a particular grouping of seats onboard the mobile platform with access to the virtual local area network being controlled by the switch and with port protection limiting access between the seats within the virtual local area network.

42. A mobile platform including the network according toclaim 33.

43. An aircraft including the network according toclaim 33.

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