Industry Insight: Timing Synchronisation in 5G Networks
As 5G networks densify, precise timing synchronisation becomes critical. Here is what you need to know about frequency and phase accuracy requirements.
5G networks require unprecedented levels of timing accuracy. The 3GPP standards for 5G NR specify phase accuracy requirements as tight as ±130 ns for some configurations, demanding highly stable frequency references throughout the network.
The Timing Challenge
Modern 5G base stations must maintain tight synchronisation with other cells to enable features such as Coordinated Multipoint (CoMP) transmission and interference cancellation. This requires a reliable, accurate frequency reference at every site.
Frequency Reference Selection Criteria for 5G
- Frequency accuracy — must meet ITU-T G.811 or better for primary references
- Holdover performance — critical when GNSS signal is unavailable
- Phase noise — affects receiver sensitivity and modulation quality
- Temperature stability — important for outdoor and uncontrolled environments
Quartzlock Timing Solutions
Our GNSS-disciplined oscillators and high-stability OCXOs are designed specifically for telecom timing applications. They provide the accuracy and holdover performance required for 5G synchronisation, in compact and cost-effective packages.