Software Defined Networking for Wireless Sensor Networks: A Survey

Abstract

One main feature of Software Defined Networking (SDN) is the basic principle of decoupling a device's control plane from its data plane. This simplifies network management and gives network administrators a remarkable control over the network elements. As the control plane for each device within the network is now implemented on a separate controller, this reliefs individual devices from the overhead caused by complex routing. Specifically, this feature has been shown to be extremely beneficial in the case of resource-constrained Wireless Sensor Networks (WSNs). By keeping the control logic away from the low-powered nodes, the WSNs can resolve their major issues of resource underutilisation and counter-productivity. This paper highlights the importance of adopting the SDN in the WSNs as a relatively new networking paradigm. This is introduced through a comprehensive survey on relevant networking paradigms and protocols supported by a critical evaluation of the advantages and disadvantages of these mechanisms. Furthermore, open research issues and challenges are pointed out shedding a light on future innovations in this field.

A QoS-Based Flow Assignment for Traffic Engineering in Software-Defined Networks

“…Graph in Figure 3 shows global network crossing time value measured by old and new algorithm for various number of requested flows. Global network crossing time which is referred as 'T' is weighted average of delays seen on the links and is measured using (2). It can be clearly seen in Figure 3 that there is a drastic drop in T value measured with proposed solution than existing algorithm [7].…”

“…Software-Defined Network (SDN) has recently emerged to overcome the limitations of traditional Internet Protocol (IP) networks and Multi-Protocol Label-Switching (MPLS) systems, by enabling dynamic and scalable computing [1]. In SDN, control plane is decoupled from data plane and placed in a centralized SDN controller [2,3]. The network intelligence and state are logically centralized in a single place, allowing network administrators to easily apply network wide policy at the controller.…”

A Novel Framework for Software Defined Wireless Body Area Network

“…Through a mobility management protocol, centralized controller is capable of updating networking policies on the fly. Consequently, controllers update the flow tables with updated routing decision to ensure optimal network performance [21]. Improvement in Energy Efficiency-Energy efficiency is an important part to deal with in any wireless sensor network deployment and when it comes to healthcare, it demands significant attention.…”

“…In addition, when a sensor node is about to run out of battery, it can inform the controller to make changes in the routing table [22]. With the help of SDN controller, traffic management, resource allocation and Quality of Service (QoS) can be achieved efficiently with a lower energy overhead [21]. Since SDN can provide an overall view of the network, controller can dynamically activate and deactivate the sensors, customize the policies to satisfy application demands and meanwhile reduce the energy consumption [6].…”

SDN-Based Resource Reservation Protocol for IoT applications in Constrained Networks

“…Regini and Daesob have proposed a solution which includes scheduling and routing algorithms that reduce energy consumption and lowers latency [16]. In [17] authors have briefed about the background of SDN and its compatibility in WSN. SDN guaranteed content delivery with simplified network management and control over the devices.…”