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Assisted Partial Timing Support application brochure cover

Assisted Partial Timing Support

Mobile customers are using more data than ever before and legacy networks simply can’t meet the demand. Communication service providers need to upgrade to LTE Advanced (LTE-A) and beyond, but transitioning isn’t easy and requires dense small cell networks. What’s more, accurate phase synchronization and timing assurance needs to be delivered throughout the backhaul infrastructure. Without this, customers will suffer a poor user experience.


With assisted partial timing support (APTS), a mini-grandmaster clock connected to a global navigation satellite system (GNSS), is placed at the edge of the packet network. This combination of a GNSS signal and network-based timing makes backhaul and delivery extremely robust. Even if a satellite signal is lost or jammed, the accuracy of the synchronization and timing needed for full network performance isn’t jeopardized. The mini-grandmaster clocks can feed accurate phase synchronization to small cells in the event of a GNSS outage for long holdover periods.


Read how APTS uses a combination of GNSS and network-based timing to ensure phase synchronization of less than one microsecond accuracy. Learn what it means for Precision Time Protocol (PTP) and SyncE, and how APTS is the easiest, most reliable and most cost-effective way of delivering highly accurate phase and time information over existing packet networks. Find out how APTS overcomes GNSS vulnerabilities and enables timing networks to scale for future growth.