UMTS LTE X2 contd. -
SON, X2AP, X2U & eNB
SON is Self Optimizing Network.
A self optimizing function would increase network performance and quality by reacting to dynamic processes in the network. These operations minimizes the operational overhead by self-configuring and self -
eNB or eNodeB -
eNB interfaces with the mobile and is responsible for hosting and managing following interfaces.
Medium Access Control (MAC),
Radio Link Control (RLC),
Packet Data Control Protocol (PDCP) layers.
Radio Resource Control (RRC) in control plane.
Radio resource management,
Enforcement of negotiated UL QoS,
Cell information broadcast,
Ciphering /deciphering of user and control plane data,
Compression /decompression of DL/UL user plane packet headers.