SDN-based Local breakout for mobile edge computing in radio access network

摘要

The local breakout (LBO) is one of the crucial functionalities in the Mobile Edge Computing (MEC) infrastructure. It enables the traffic offloading in the radio access network to reduce end-to-end latency and save core network load. One of the essentials regarding LBO in MEC is to allow the traffic steering in diverse granularity without impacting the ongoing traffic. We present the LBO solution based on the Software-defined networking (SDN) approach to meet the requirement. The proposed solution is evaluated in the testbed built via extending the Open vSwitch (OVS). The experimental results measured in the emulation of the Long Term Evolution (LTE) network disclose that our solution outperforms the existing MEC platform known as Network Edge Virtualization Software Development Kit (NEV SDK) by 10% - 20% in the average packet processing latency. The additional features including the QoS provisioning and the charging are supported in our solution as well.