An architecture for software defined wireless networking

TLDR

Software defined networking separates control and data planes, enabling efficient operation, rapid service deployment, and virtualization in wired networks. This article applies an SDN‑like approach to wireless mobile networks, aiming to extend wired SDN benefits and exploit mobile deployment features for further improvements. The architecture is described through modules, interfaces, high‑level signaling, and standardization efforts, highlighting potential advantages, weaknesses, and the need for coordination. Representative use cases demonstrate the benefits of the proposed architecture.

Abstract

Software defined networking, characterized by a clear separation of the control and data planes, is being adopted as a novel paradigm for wired networking. With SDN, network operators can run their infrastructure more efficiently, supporting faster deployment of new services while enabling key features such as virtualization. In this article, we adopt an SDN-like approach applied to wireless mobile networks that will not only benefit from the same features as in the wired case, but will also leverage on the distinct features of mobile deployments to push improvements even further. We illustrate with a number of representative use cases the benefits of the adoption of the proposed architecture, which is detailed in terms of modules, interfaces, and high-level signaling. We also review the ongoing standardization efforts, and discuss the potential advantages and weaknesses, and the need for a coordinated approach.