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gsc10_joint_5.1, Location-based Services

Agenda Item:. gsc10_joint_5.1, Location-based Services. TIA Standards Work on Enhanced 911 Emergency Services Prepared by: David Crowe, Consultant to Qualcomm, David.Crowe@cnp-wireless.com Presented by: Cheryl Blum, Chair TIA Engineering Committee TR-45.

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gsc10_joint_5.1, Location-based Services

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  1. Agenda Item: gsc10_joint_5.1, Location-based Services TIA Standards Work on Enhanced 911Emergency Services Prepared by: David Crowe, Consultant to Qualcomm, David.Crowe@cnp-wireless.com Presented by: Cheryl Blum, Chair TIA Engineering Committee TR-45

  2. Next slides are only placeholders. May be able to use some.

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  5. E911 History • The US FCC released a ‘Report and Order’ in 1996 (94–102) to provide: • a callback number and cell/sector identification (‘Phase I’). • more accurate location (‘Phase II’). • This was revised in 1999 and allowed handset-based location technologies. • The TIA developed J-STD-034 with ATIS to address Phase I in 1997. • J-STD-036 was first published in 2000 to address Phase II. Revision B is now [under development].

  6. J-STD-036 Reference Model

  7. Callback • Providing the telephone number of the emergency caller allows calls to be made back after the emergency call (e.g. to obtain more information). • A pseudo-callback number is provided for non-subscribers, based on the ESN, IMEI or MEID. It allows identification of the caller, but not callback. • Callback uses standard inter-system call delivery (e.g. based on TIA-41).

  8. Cell/Sector Identification • Identifies the cell from which an emergency call was made. • Provides crude location. • Helps route to the correct PSAP. • May be transmitted directly as an ESRD, or indirectly via an ESRK (followed by a database lookup).

  9. Accurate Location • Network based solutions must provide 100 meter accuracy 67% of the time, 300 meters 95% of the time. • Handset based solutions must provide 50 meter accuracy 67% of the time, 150 meters 95% of the time. • Location (as lat/long) is usually provided after initial call setup. • Interim location may be provided during call setup to allow more accurate PSAP routing.

  10. J-STD-036 Revision B • Joint effort between TIA TR-45.2 and ATIS WTSC (formerly T1P1). • Extends ‘interim location’ to GSM/UMTS. Also supports CDMA. • Interim location is used to provide more accurate PSAP selection, reducing misrouted calls. • Supports ‘uninitialized’ mobiles with MEID (CDMA replacement for ESN, based on IMEI).

  11. Summary • TIA/ATIS J-STD-034 supports the US FCC Phase I Enhanced Wireless 911 mandate. • TIA/ATIS J-STD-036 supports the US FCC Phase II mandate, along with emerging wireless carrier/emergency call taker requirements. • [All major public wireless technologies used in the USA are supported.]

  12. Thank You! Mercie Danke gracias Grazie Arigato Kamsa Hamaida Xie_Xie Thoinks, Moite Cheers

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