(Radio Access Network). The portion of a network operator’s infrastructure that provides mobile services over cellular frequencies. The RAN includes the antennae that connect to things such as smart phones and IoT connected devices, the controller of those antennae that share spectrum between users and seamlessly hand off connections from antenna to antenna, the devices that convert the radio signals to packets sent over the Internet, and other devices that provide control functions to authenticate users and capture usage data. 

In 4G and particularly 5G networks, multiple radio links may be used as part of a service to a connected device. The richness of the RAN topology creates the need for performance management solutions like Cheetah Networks PulseView  Solution.
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