1-3 MME & eNB functions || LTE Network Architecture || 4G LTE Evolved Packet Core (EPC) || بالعربي
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https://mpc-courses.teachable.com/p/5...
or you can visit https://MobilePacketCore.com
The eNb provides the radio interface to the UE.
the MME is responsible for Mobility management in the network.
It is the control plane interface to the eNB.
and it performs UE authentication.
and it performs NAS signalling security.
and it tracks the UE location (Tracking Area List)