Uma solução SDN para comunicação mesh de nós em uma rede Zigbee padrão 802.15.4

Abstract

Internet of Things (IoT) is a new paradigm that has gained great importance in telecommunications in recent times. The basic idea behind this paradigm is to connect a lot of objects of all kinds in the network and can use unique addressing schemes, and thus interact with each other. The IEEE 802.15.4 standard defines the ZigBee protocol, and some important points are the low power consumption and low cost of wireless network. A major routing algorithms adopted in ZigBee is AODV which is used as a standard has the characteristic of generating a large number of trafficked packets in the network, increasing network overhead and consequently worsening the scalability of the network. Another problem 802.15.4 ZigBee standard is that the user is limited only to what is available by default, that is, software that is designed to work in the ZigBee network device firmware, do not let that new features are implemented. Software Defined Networking (SDN) is a new paradigm in computer networks in order to separate control plane, responsible for managing and network protocols, and data plan, responsible for packet forwarding. The problems found in ZigBee 802.15.4 standard can be solved using the paradigm SDN as it proposes a centralized management model for software, ie the separation of control and data plane, the control plane is more flexible for the development of new features and functionality to the network, making it easier to maintain network, requiring only a brief configuration of ZigBee devices. The main objective of this work is to propose a reactive routing solution, based on an initial model SDN, for Mesh communication Internet of Things environments using the 802.15.4 standard. The purpose of this work is an SDN solution for mesh routing in IoT network infrastructures that perform sensing, as an alternative to using the AODV protocol. This solution was evaluated from a case study where a test network in which routing decisions are made by an application on a central node ZigBee network coordinator was mounted.