Secure and Efficient Automatic Ruling in Three-Level Network Architecture

Abstract

Wireless sensor and actuator networks (WSANs) allow intelligent healthcare for homecare environments in ambient assisted living (AAL) systems. Typically, WSANs are constrained networks deployed in three-level network architectures with a central server and several intermediate edge routers. A protocol and system are proposed in this paper for creating rules that can enforce application-layer semantics, both at a central server and at edge routers. With this system in place, multicasting wireless networks would be able to filter messages more efficiently, preserving network and node resources. Rules are implemented by means of the Constrained Application Protocol (CoAP) resources of the nodes, placed in an IPv6 over Low power Wireless Personal Area Network (6LoWPAN). Moreover, we discuss the applicability of the proposed solution by a performance and a security analysis.