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BEGIN:VEVENT
UID:2c7ae8c06915f64a74c3851e86600cc003c1157c@swoogo.com
DTSTAMP:20260812T234600Z
DESCRIPTION:The Single Frequency Network (SFN) mode of operation within the
  ATSC 3.0 standard provides for a significantly more efficient usage of th
 e available transmission frequency bands. As transmission frequencies are 
 a regulated and limited resource\, the importance of the SFN mode of opera
 tion is of vital importance to the longevity of digital terrestrial transm
 ission standards such as ATSC 3.0. \n\nATSC 3.0 SFN operations require hig
 hly accurate synchronous transmission within the same frequency. Consequen
 tly\, a much stricter performance level is required from the synchronizati
 on reference equipment. A typical solution uses a non-network based system
  such as a GNSS (Global Navigation Satellite System) receiver as the UTC s
 ource reference at the transmission site. In such a deployment it is neces
 sary to place or integrate the GNSS receiver at each and every transmitter
  in order for required microsecond-level precision and accuracy to be achi
 eved. \n\nThis paper will introduce alternative and complementary operatio
 nal modes for providing UTC using an IP network based technology called Ti
 me Transfer.  Time Transfer is a two-way time and frequency transfer metho
 d\, showing how a stable\, robust absolute time representation across the 
 network is achieved\, including automatic corrections for intrinsic delays
  and diurnal wander. \n\nThe paper will continue to describe how the Time 
 Transfer method supports mission-critical services and large scale distrib
 ution networks with the delivery of GNSS-independent UTC. As the method en
 ables distribution of real-time information over the same IP infrastructur
 e that is used for transport of media and other data payloads\, it is high
 ly secure\, cost-effective and can be built resiliently at scale. Moreover
 \, this approach provides the accuracy and precision needed (that is\, app
 roximately one microsecond) for any real-time wide-area network applicatio
 ns including those based on SMPTE ST2110 and LTE-TDD. The solution is at t
 he same time\, more resilient than satellite-based systems and more accura
 te and scalable than traditional network synchronization methods.
DTSTART:20191023T183000Z
DTEND:20191023T190000Z
LAST-MODIFIED:20260812T234600Z
LOCATION:San Francisco Room
SEQUENCE:0
STATUS:CONFIRMED
SUMMARY:IP Network Based Delivery of Coordinated Universal Time for ATSC 3.
 0 Single Frequency Networks
TRANSP:OPAQUE
X-ALT-DESC;FMTTYPE=text/html:The Single Frequency Network (SFN) mode of ope
 ration within the ATSC 3.0 standard provides for a significantly more effi
 cient usage of the available transmission frequency bands. As transmission
  frequencies are a regulated and limited resource\, the importance of the 
 SFN mode of operation is of vital importance to the longevity of digital t
 errestrial transmission standards such as ATSC 3.0. <br /><br />\nATSC 3.0
  SFN operations require highly accurate synchronous transmission within th
 e same frequency. Consequently\, a much stricter performance level is requ
 ired from the synchronization reference equipment. A typical solution uses
  a non-network based system such as a GNSS (Global Navigation Satellite Sy
 stem) receiver as the UTC source reference at the transmission site. In su
 ch a deployment it is necessary to place or integrate the GNSS receiver at
  each and every transmitter in order for required microsecond-level precis
 ion and accuracy to be achieved. <br /><br />\nThis paper will introduce a
 lternative and complementary operational modes for providing UTC using an 
 IP network based technology called Time Transfer.  Time Transfer is a two-
 way time and frequency transfer method\, showing how a stable\, robust abs
 olute time representation across the network is achieved\, including autom
 atic corrections for intrinsic delays and diurnal wander. <br /><br />\nTh
 e paper will continue to describe how the Time Transfer method supports mi
 ssion-critical services and large scale distribution networks with the del
 ivery of GNSS-independent UTC. As the method enables distribution of real-
 time information over the same IP infrastructure that is used for transpor
 t of media and other data payloads\, it is highly secure\, cost-effective 
 and can be built resiliently at scale. Moreover\, this approach provides t
 he accuracy and precision needed (that is\, approximately one microsecond)
  for any real-time wide-area network applications including those based on
  SMPTE ST2110 and LTE-TDD. The solution is at the same time\, more resilie
 nt than satellite-based systems and more accurate and scalable than tradit
 ional network synchronization methods.
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