Overview
All cellular networks require a very accurate frequency reference. TDD networks, such as WiMAX and Long Term Evolution (LTE), additionally need an accurate phase reference. Advanced LTE techniques need an accurate phase reference regardless of whether they are in FDD or TDD networks. The timing challenge for the cellular operator is a desire to migrate to Ethernet for capacity and economy, whilst maintaining accurate frequency, phase and time references.Cambium_PTP670_Precsion_Timing_WhitePaper
