CORAL-SDN: A software-defined networking solution for the Internet of Things

Abstract

Traditional Wireless Sensor Networks protocols used in Internet of Things Networks (IoTNs) today face challenges in high-and ultra-density network topology conditions. New networking paradigms like Software-Defined Networks (SDN) have emerged as an up-and-coming approach to address IoT application requirements through implementing global protocol strategies and network programmability. This paper proposes a divide-and-conquer solution that aims to improve the PDR in ultra-dense IoT (UDIoT) network environments using network slicing. As such, we develop and evaluate DENIS-SDN, an opensource SDN solution for UDIoT Network environments consisting of a modular SDN controller and an OpenFlow-like data-plane protocol. DENIS-SDN utilizes our Network Density Control mechanism based on operational specification requirements, which address the challenges UDIoT network deployments pose, including interference, congestion, resource management, control, and quality of service (QoS) performance issues. To achieve this, it divides dense IoT networks into either logically sliced subnetworks separating nodes using routing rules or physically sliced sub-networks separating nodes into different radio channels. We provide evaluation results over realistic scenarios demonstrating improved PDR performance up to 4.8% for logically and up to 11.6% for physically sliced network scenarios.

NovaGenesis Applied to Information-Centric, Service-Defined, Trustable IoT/WSAN Control Plane and Spectrum Management

“… D3—NovaGenesis made possible name-based access and routing of spectrum sensing data, including network caching for efficient, distributed and coherent software-control (control plane) of smart environments. D4—Integration of software-defined control and operation [ 37 , 49 ]. The current SDN model (based on the OpenFlow protocol) is limited to configure forwarding tables at link layer switches.…”

“…Access points and mobile devices configured channels accordingly to a SDN controller. CORAL-SDN [ 49 ] was embedded (D4) inside IoT nodes to offer low power wireless communication and media access control in IEEE 802.15.4 2.4 GHz networks. A modified controller offered topology control, routing and flow establishment, and data collection.…”

Atomic-SDN: Is Synchronous Flooding the Solution to Software-Defined Networking in IoT?

“…For example, this could be used to allow nodes to run their SDN flowtable actions in a low-energy mode. CORAL-SDN [5] reduces the effect of overhead generated by other control protocols on the SDN stack, and uses a mechanism to reduce RPL control messages in a IPv6 based IEEE 802.15.4 network as nodes initialize and associate with the SDN controller. This frees up resources for the SDN protocol, improving its scalability.…”

“…It does not necessarily follow that this would be the case in a real-world situation. However, these times are still considerably less than the time it takes to complete the same SDN operations in current SDN architectures for low-power wireless networks [4], [5], [39], [40].…”

State of the art in software defined networking (SDN)

“…In another sense, [38] shows the development of SDN for WSN 19 (Wireless Sensors Network), with the implementation of new protocols based on the same centralized control logic to dynamically adjust the needs of a wireless sensor system, key elements in the IoT paradigm. The investigation shows the analysis and evaluation of the WSN operation using the CORAL-SDN 20 protocol.…”