Performance Comparison of State Synchronization in Distributed LTE EPC
Summary :- Summary: This paper compares various state synchronization strategies in a distributed LTE Evolved Packet Core (EPC) implemented as virtualized network functions. It studies designs ranging from no synchronization, synchronization at session boundaries, to synchronization after every message, analyzing throughput and latency trade-offs. Synchronization after every message has prohibitive overhead, while session granularity offers a balance between fault tolerance and performance. The authors provide open-source implementations and experimental results guiding EPC design choices.