Wireless network in aircraft
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This document summarizes wireless network technologies for aircraft. It discusses current issues with onboard wireless use and the need for wireless access for passengers and crew. It describes proposed network architectures that use picocells and integrate standards like GSM, UMTS, Bluetooth, and Wi-Fi. The architectures connect to satellite networks for broadband access. Examples of implemented systems are provided, like Connexion by Boeing and Aircell, which use different wireless transmission methods to satellites or cell towers. Network protocols, quality of service classes, and components like the cabin, transport, and ground segments are also outlined.
Wireless network in aircraft
- 1. Wireless Networks in Aircraft Prepared By: Sunny chavda and Pankaj Khodifad B.Tech 6th Semester, Electronics & Communication Department , Institute of Technology, Nirma University.
- 2. Content • Current Issues • Services • Wireless Cabin architecture • Pico cell • Protocols • QoS classes
- 3. Current Issues • Aircraft are last remaining islands • FCC banned cellular phones -due to channel reuse -output power of the mobile handset • FAA also prohibits in-flight use of wireless devices -Exceed the permitted interference -Adversely affect the navigation system
- 4. • FAA also regulates all PEDs (like iPods, DVD players) during flight • People are becoming more and more used to personalized equipments -clear demand for a wireless access through users’ own equipment • Also useful for airline personnel • Cost massive wired network in an aircraft is saved
- 5. • In the past -only a few kbps -used for voice and for low rate communication • Now, links of Mbps are available to allow for variety of services and applications • promising new market is opened for communication service providers/operators and airline operators
- 6. SERVICES • Most important standards -GSM, UMTS with UTRAN air interface, Bluetooth, and W-LAN - need to co-exist with each other and wired IP installations • For mobile telephony, circuit-switched (CS) or packet switched(PS) services are supported • For IP services , - typical protocols from business and home environment are supported
- 7. Wireless Cabin architecture • Cabin Segment • Transport Segment • Ground Segment
- 8. Cabin Segment • Local Access domain • Service Integration domain
- 9. Local Access domain • UTRAN/GSM radio access segment. • WLAN segment. • Bluetooth access segments.
- 10. Service Integration domain • Network functionalities of the UMTS network and IP • Authentication • Admission control • Accounting • Mobility support • Quality of Service (QoS) support • interfaces towards the satellite transport network.
- 13. WirelessCabin architecture implementation • Connexion by Boeing. • phased array antenna Ku band antenna • leased satellite transponders, and ground stations. • downlink speeds of up to 20Mbit/s • uplink speeds up to 2 Mbit/s. • service began on Lufthansa German Airlines in May 17, 2004.
- 14. Modern wireless network in aircraft
- 15. Modern wireless network in aircraft • Aircell. • Direct air-to-ground technology. • 3 MHz air-to-ground spectrum in 800Mhz band. • Working with 100 towers in USA. • service began on American Airlines in July 2008.
- 17. Picocell • base station typically covering a small area
- 18. Protocols • Internet Protocol(IP). • Remote Authentication Dial In User Service (RADIUS). • Session Initiation Protocol (SIP). • Resource Reservation Protocol (RSVP).
- 19. QoS classes • WirelessCabin first class (Conversational class: real time/delay intolerant). • WirelessCabin second class (Streaming class: real time/delay tolerant). • WirelessCabin third class (Interactive class: non real time/interactive). • WirelessCabin Fourth class (Background class).
- 20. Reference • http://en.wikipedia.org/wiki/Air-ground_radiotelephone_service • http://en.wikipedia.org/wiki/Connexion_by_Boeing • http://en.wikipedia.org/wiki/Aircell • http://en.wikipedia.org/wiki/Gogo_Inflight_Internet • "System Architecture for 3G Wireless Networks in Aircraft " by Axel Jahn, Cristina Párraga Niebla • http://123seminarsonly.com/Seminar-Reports/007/52769777- AERONAUTICAL-COMMUNICATION.pptx • "Coverage and Capacity Planning for Aircraft In-Cabin Wireless Heterogeneous Networks" by Cristina Párraga Niebla
- 21. Important Terms • public switched telephone network (PSTN) • Internet service provider (ISP) • public land mobile network (PLMN) • Universal Mobile Telecommunications System (UMTS) • Geostationary Earth Orbit (GEO) • low Earth orbit (LEO) • L band spectrum: 40 to 60 GHz • Ku band spectrum 10.7 to 12.75 GHz • Aircraft Communications Addressing and Reporting System (ACARS) • Aeronautical Radio, Incorporated (ARINC)
- 23. Thank you very much Have a nice day…
Editor's Notes
- #19: The Internet Protocol (IP) is the principal communications protocol used for relaying datagrams (also known as network packets) across an internetwork using the Internet Protocol Suite. Responsible for routing packets across network boundaries, it is the primary protocol that establishes the Internet.Remote Authentication Dial In User Service (RADIUS) is a networking protocol that provides centralized Authentication, Authorization, and Accounting (AAA) management for computers to connect and use a network service. The Session Initiation Protocol (SIP) is an IETF-defined signaling protocol widely used for controlling communication sessions such as voice and video calls over Internet Protocol (IP). The protocol can be used for creating, modifying and terminating two-party (unicast) or multiparty (multicast) sessions. Sessions may consist of one or several media streams.The Resource Reservation Protocol (RSVP) is a Transport Layer protocol designed to reserve resources across a network for an integrated services Internet. RSVP operates over an IPv4 or IPv6 Internet Layer and provides receiver-initiated setup of resource reservations for multicast or unicast data flows with scaling and robustness.