A Context-Aware Communication Platform for Smart Objects

Abstract

Abstract. When smart objects participate in context-aware applications, changes in their real-world environment can have a significant impact on underlying networking structures. This paper presents a communication platform for smart objects that takes an object's current realworld context into account and adapts networking structures accordingly. The platform provides (1) mechanisms for specifying and implementing context-aware communication services, (2) a tuplespace-based communication abstraction for inter-object collaboration, and (3) support for linking communication and context-recognition layers. For specifying context-aware communication services, a high-level description language, called SICL, and a compiler that generates corresponding code for smart objects were realized. The tuplespace-based infrastructure layer for interobject collaboration hides low-level communication issues from higher layers and facilitates collaborative context recognition between cooperating objects. The paper also presents examples of context-aware communication services and evaluates the platform on the basis of a concrete implementation on an embedded device platform.

Towards a Lightweight Mobile Semantic-Based Approach for Enhancing Interaction with Smart Objects

“…For example, although tuple-based (or key-value) models reduce management overhead and can be easily applied to 'legacy' mobile systems (e.g., [4]), they lack from validation and scalability capabilities and they are not suitable for handling context information ambiguity. A hierarchical structure and the automatic validation are, however, some of the strong points of markup scheme modelling, although XML has a high semantic redundancy and it is not fully adapted to the limited resources of embedded devices (several works points out that a better performance can be obtained with other techniques as, e.g., JSON 1 ).…”

“…The K 4R project 4 , maybe the most notable extension of r 3 initiative, focuses on defining a RESTful (and ontological) interface for Knowledge Resource (including Knowledge Reasoners). Authors consider this approach broad enough to include ECA rules modelling support [12].…”

Generic Framework for Context-Aware Communication Services in Visitor’s Guides

“…Many attempts were made to provide generic infrastructure for general context aware application development (to list just a few, see [14,[19][20][21][22][23][24], some even for the specific setting of cultural heritage sites [25,26]. However, most of them focused on context modeling and infrastructure, rather than on the services themselves.…”

Integrating Handhelds into Environments of Cooperating Smart Everyday Objects

“…In our application model, smart objects specify how to read out sensors and write the corresponding sensor samples as tuples into the distributed data structure, thereby sharing them with other objects. Please refer to [8] for a more detailed description and an evaluation of our tuplespace implementation for the BTnodes. In order to build a running Smoblet system, we have ported our implementation to Windows CE.…”