Versions Compared

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

...

Why it's important

Slip in phase and frequency is detrimental to normal operation in mobile TDD
(Time Division Duplex) band causing inter-cell interference and eventually effecting call degradation
and hand-off coordination
PtP

PTP leverages hardware time stamping of PTP PDUs to achieve
sub-100 nanosecond level accuracy while
filtering dynamic time error accumulation along the way

The version 2 of IEEE 1588

 introduces the concept of “profile”
G.8265.1

ITU-T G.8265.1 telecom profile is specified for frequency synchronization

>>> G.8275.1 Full Timing Support (FTS) 

G.8265.2

ITU-T G.8275.1/G.8275.2 are for phase/time synchronization

>>> G.8275.2 Partial timing support (PTS)

>>> G.8275.2 Assisted Partial timing support (APTS)

>>> E2E Transparent Clock , PTP Master