Performance Comparison of State Synchronization in Distributed LTE EPC

Performance Comparison of State Synchronization in Distributed LTE EPC

  1. 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.
Advanced Web Queue Control Techniques

Advanced Web Queue Control Techniques

Building on earlier work, this technical report investigates sophisticated control algorithms to manage web request queues under extreme overload, using user behavior modeling, simulation, and guidelines for real-world deployment in scalable web services.

     Mobile Data Usage, Devolve and Redeem Model

     Mobile Data Usage, Devolve and Redeem Model

    The paper proposes models for devolving and redeeming mobile data usage, allowing users to trade data balance efficiently. Analytical and empirical results show how such systems can optimize network resource usage, reduce cost, and increase user flexibility in mobile data plans.

    Presents RoboNorm for detecting inconsistent TCP retransmissions to prevent IDS evasion. Covers normalizer design, hash-based consistency checking, handling misaligned retransmissions using fitting segments, ACK promotion/demotion mechanisms, and memory-efficient implementation resisting adversarial attacks.