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5G NR UE Timers Explained | RRC, NAS, PDCP and MAC Layer Timers

In this video and my all videos slide used from below sources and credit goes to them:- https://www.mohamedeladawi.com/ http://howltestuffworks.blogspot.com/ https://www.telecomhall.net/ https://www.techplayon.com/ https://www.sharetechnote.com/html/5G... https://www.youtube.com/ https://devopedia.org/ https://techlteworld.com/ https://medium.com/ https://wirelessbrew.com/ https://www.telecomtrainer.com/ https://www.rfwireless-world.com/ https://www.linkedin.com/ https://telcomaglobal.com/ https://www.mathworks.com/ https://telcomaglobal.com/ https://cafetele.com/ ---------------------------------------------------- Your ultimate destination to learn about the fascinating world of telecommunications! Our channel is dedicated to simplifying complex concepts of 4G and 5G technologies, making them accessible to everyone, whether you're a student, a professional, or simply curious about how mobile networks power our digital world. ---------------------------------------------------------------- We dive deep into the architecture, protocols, and standards that form the backbone of 4G and 5G networks. From understanding the basics of wireless communication to exploring advanced topics like carrier aggregation, beamforming, and massive MIMO, we’ve got you covered. -------------------------------------------------------------- Stay updated with the latest trends and innovations shaping the telecom industry. Discover how 5G is transforming industries like IoT, healthcare, autonomous vehicles, and smart cities. We also provide practical insights and career tips for those aspiring to enter the telecom sector. ---------------------------------------------------------------- Join us on this exciting journey to unlock the potential of 4G and 5G technology. Linked In - www.linkedin.com/in/praveen-borban ------------------------------------------------------------------------- In 5G NR, UE timers play a crucial role in managing network connections, handovers, and signaling processes. These timers ensure that different procedures, such as RRC connection setup, NAS registration, and MAC retransmissions, occur within a defined timeframe. If a timer expires without receiving a response, the UE may retry, release the connection, or switch states to maintain network efficiency. There are three main categories of UE timers: RRC timers (for connection setup, re-establishment, and handovers), NAS timers (for registration, authentication, and session management), and MAC timers (for scheduling requests and retransmissions). Some critical timers include T300 (RRC connection request), T310 (radio link failure detection), T3412 (periodic registration update), and HARQ timers for data retransmissions. These timers ensure seamless communication and prevent unnecessary delays. UE timers help optimize network performance, reduce congestion, and enhance user experience by efficiently managing connection stability. They also support seamless mobility, improve battery efficiency, and ensure fast recovery from failures. Understanding these timers is essential for network engineers, telecom professionals, and 5G enthusiasts looking to improve 5G connectivity and reliability.