ETSI TS 101 528 English Printed Edition English PDF Digital cellular telecommunications system (Phase 2+) (GSM); Location Services (LCS); Broadcast Network Assistance for Enhanced Observed Time Difference (E-OTD) and Global Positioning System (GPS) Positioning Methods (GSM 04.35 version 8.0.0 Release 1999)

standard published 04/01/2000 by European Telecommunications Standards Institute