A DHT-Based Discovery Service for the Internet of Things

Abstract

Current trends towards the Future Internet are envisaging the conception of novel services endowed with context-aware and autonomic capabilities to improve end users' quality of life. The Internet of Things paradigm is expected to contribute towards this ambitious vision by proposing models and mechanisms enabling the creation of networks of "smart things" on a large scale. It is widely recognized that efficient mechanisms for discovering available resources and capabilities are required to realize such vision. The contribution of this work consists in a novel discovery service for the Internet of Things. The proposed solution adopts a peer-to-peer approach for guaranteeing scalability, robustness, and easy maintenance of the overall system. While most existing peer-to-peer discovery services proposed for the IoT support solely exact match queries on a single attribute (i.e., the object identifier), our solution can handle multiattribute and range queries. We defined a layered approach by distinguishing three main aspects: multiattribute indexing, range query support, peer-to-peer routing. We chose to adopt an over-DHT indexing scheme to guarantee ease of design and implementation principles. We report on the implementation of a Proof of Concept in a dangerous goods monitoring scenario, and, finally, we discuss test results for structural properties and query performance evaluation.

Aspect Oriented Middleware for Internet of Things: A State-of-the Art Survey of Service Discovery Approaches

“…Computational simulation estimates average leaf depth of the trie and the average block utilization for the dangerous goods monitoring application in the industrial monitoring domain. In addition, a previous researcher [22] claims that the proposed layered solution privileges ease of design and implementation compared to other overlay dependent indexing schemes. The focus of the developed model is in the aspect of service resolution rather than on the creation of overlay by automatically discovering existing services.…”

“…The resource discovery mechanism in [22] is a peer-to-peer discovery model that is different from conventional peer-to-peer resource discovery approaches for IoT in which only single attribute matching is supported. The proposed methodology adopts DHT indexing scheme and guarantees scalability, robustness and maintainability of the system and supports multi-attribute and range queries.…”

Distributed spatial indexing for the Internet of Things data management

“…A Distributed Hash Table (DHT)-based network for discovery service is another approach to retrieve the service (node) that has an answer for a requested query [17]. The connected nodes are distributed on the network, and each node is represented as a (key, value) pair.…”

SWoT Service Discovery for CoAP-Based Sensor Networks

“…하지만 이렇게 별도의 리소스 목록 관리용 서버를 둔다는 개념의 RD는 확장성 면에서 제약이 있으며, 네트워크 공격 등 해킹의 목표물이 될 수 있다 [6,8]. 또한 RD의 유지에 실 패하면 전체 IoT 서비스에 영향을 주는 단점이 존재한다.…”