Light-Weight Multicast DNS and DNS-SD (lmDNS-SD): IPv6-Based Resource and Service Discovery for the Web of Things

Abstract

Internet of Things (IoT) is presenting an enormous growing, in numbers, it is estimated that over 50 billion of devices will be connected to Internet by 2020. Therefore, it presents a high scalability requirement to manage every resource connected to the network. Therefore, It is required a high capability for autonomous registration and discovery of resources and services. In addition, it should be dynamically adapted with the inclusion of new devices in the network and changes of the existing ones. Nowadays, the most extended discovery architecture for the Internet is the Domain Name Systems (DNS), which is offering through the extensions multicast DNS (mDNS) and DNS Service Directory (DNS-SD) the query and discovery of services by type and properties. It has been already carried out some initial works on mDNS and DNS-SD for the discovery of things. Thereby, it can satisfy the discovery of resources from the IoT point of view, and discovery of services, i.e. WebServices such as CoAP from the Web of Things point of view. But, it has not been yet analyzed the impact of DNS for Smart Objects, since it cannot be directly applied, because these protocols are designed for hostbased requirements, where they are not taking into account the design issues and constraints from the Smart Objects. For that reason, this paper analyzes the requirements and design issues to apply these discovery techniques in Smart Objects, carries out an overview of the satisfaction of them in the initial solutions for IoT, in order to finally offer an evaluation of different ways to apply mDNS and DNS-SD for Smart Objects, concluding with a set of recommendations and lessons learned to build a lightweight implementation of mDNS and DNS-SD for resource discovery and directory.

Internet of Things: A Survey on Enabling Technologies, Protocols, and Applications

“…The most dominant protocols in this area are multicast DNS (mDNS) and DNS Service Discovery (DNS-SD) that can discover resources and services offered by IoT devices. Although these two protocols have been designed originally for resource-rich devices, there are research studies that adapt light versions of them for IoT environments [82,83].…”

Energy Efficient IP-Connectivity with IEEE 802.11 for Home M2M Networks

“…A different study, [5], also emphasizes low power consumption of the radio as an important characteristics of home M2M networks.…”

Web of Things

“…Os requisitos e as dificuldades de projeto para utilização do protocolo Zeroconf em dispositivos inteligentes foram descritos por Jara et al [13]. De acordo com esse trabalho, os três principais requisitos tecnológicos para a Web das Coisas são flexibilidade, escalabilidade e ubiquidade.…”

“…Os três primeiros [13,2,15] trabalhos relacionados apresentam propostas de configuração automática de dispositivos.Nenhum deles integra a configuração automática a um barramento de serviços, de forma a estender as funcionalidades do barramento, que, neste trabalho, funciona como um gateway de objetos inteligentes para a Web das Coisas.…”