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GSM onboard Aircraft

GRSC4(06)11. GSM onboard Aircraft. Follow up of the generic presentation at the previous GSC in Sophia Antipolis. GSM Onboard Aircraft. After long discussions the work is approaching completion and necessary regulation needs to be put in place before starting the services

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GSM onboard Aircraft

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  1. GRSC4(06)11 GSM onboard Aircraft Follow up of the generic presentation at the previous GSC in Sophia Antipolis GSC: Standardization Advancing Global Communications

  2. GSM Onboard Aircraft • After long discussions the work is approaching completion and necessary regulation needs to be put in place before starting the services • Basically two issues have to be taken into account • Avoidance of disturbance for the equipment inside the aircraft • Limitation to the BTS/NCU to avoid interference with the terrestrial networks • The NCU is designed to ensure that terminals within the cabin cannot access terrestrial networks and that they do not transmit any signal without being controlled by the onboard GSM system, by raising the noise floor inside the cabin. GSC: Standardization Advancing Global Communications

  3. GSM Onboard Aircraft High level architecture of the GSM onboard aircraft system GSC: Standardization Advancing Global Communications

  4. GSM onboard Aircraft • Interference with equipment onboard the aircraft • The limitation concerns the maximum power to be used by the onboard BTS to capture traffic from the onboard GSM Terminals • This is mainly required to avoid interference between the BTS and the transmission system onboard the aircraft GSC: Standardization Advancing Global Communications

  5. GSM onboard Aircraft • Interference with external networks • The confinement of the mobile inside the aircraft is one of the main issues to be solved. When 3000 m above ground the system will work and the NCU will ensure that mobiles do not attempt to connect to terrestrial networks. • The key parameters for the protection of terrestrial radio mobile networks are the radiated power limits determined outside the aircraft as derived from the compatibility study performed within CEPT WGSE • There seems to be no modification required for the mobile station GSC: Standardization Advancing Global Communications

  6. GSM onboard Aircraft • GSM onboard aircraft equipment must comply with the R&TTE Directive and the Harmonized European Norm has to guarantee that it does so • Time scale • It is assumed that the regulatory requirement gathered in a European Norm complementing the one on BTS GSM shall be made available before the end of this year. • Product could be made available on the European market as early as mid 2007 GSC: Standardization Advancing Global Communications

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