In today's era of global connectivity, high speed, high bandwidth, and low latency are fundamental requirements for mobile network architecture. The rapid development of 5G technology meets these needs of mobile networks, providing a highly reliable, robust, and high-quality service network for global users. Furthermore, 5G technology continues to lead the development and application of the Internet of Things based on mobile connectivity, autonomous driving, smart cities, and smart homes.

        The next generation of communication networks, in order to meet the higher precision requirements of end-to-end node connections, places higher demands on time synchronization - achieving synchronization accuracy within ±130ns. While 4G networks rely on time signals provided by GPS, the 5G era requires the adoption of the Precision Time Protocol (PTP), IEEE 1588, which offers higher time accuracy. Chip-level atomic clocks can meet the synchronization accuracy requirements of 5G and future communication networks, supporting their widespread deployment.