Telecom Requirements for Time and Frequency ... - GPS.gov

More documents

Recommendations

Info

Evolution of mobile technologiesGSM Track (3GPP)GSM WCDMA HSPATD-SCDMACDMA Track (3GPP2)CDMA One EVDO Rev ALTEFDD and TDD2001 2005 2008 2010
Mobile applications andSynchronization• The needs of Transport and switching networks havebeen the main drivers for sync standardization in the90s– Mobile applications only as side users (e.g. SynchronousPDH signals are used to synchronize the GSM network infrequency)• The needs of Mobile networks are now the maindrivers of the sync standardization activities in ITU-T:– Several bodies where synchronization is a key topic (3GPP,MEF, BBF, NGMN)• Discussions between ITU-T and 3GPP on the syncaspects not always easy:– Use of different terminologies– Different focus
Page 1 and 2: Telecom Requirements for Timeand Fr
Page 3 and 4: Excerpts from WSTS• The NIST-ATIS
Page 5 and 6: Telecom Receivers are GenerallyStat
Page 7 and 8: Packet-Based Networks• The physic
Page 9 and 10: Timing Technology: Phase• Alignme
Page 11 and 12: GPS/GNSS meets Stratum 1 Requiremen
Page 13 and 14: Time Synchronization via PTP• The
Page 15 and 16: Current Frequency Sync Requirements
Page 17 and 18: Requirements from ITU-T Q13/15Curre
Page 19: Excerpts from:Mobile standards & sy
Page 23 and 24: CDMA 2000 SynchronizationRequiremen
Page 25 and 26: WCDMA Base Station TX Frequency Err
Page 27 and 28: LTE-TDD Phase SynchronizationRequir
Page 29 and 30: CoMP introduction (1/2)CoMP = Coord
Page 31 and 32: CoMP-JP time/phase synchronization
Page 33 and 34: SummaryTo operate CoMP Joint Proces
Page 35 and 36: Sync from GNSS at ~100 ns• At a f

Telecom Requirements for Time and Frequency ... - GPS.gov

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?