Context-Aware Group Communication in Mobile Ad-Hoc Networks

The widespread availability of both fixed and wireless network connectivity and the growing market of portable devices are enabling anytime and anywhere impromptu collaboration. The emergence of Mobile Ad-Hoc Networks (MANET) further opens up new possibilities for the provisioning of advanced collaborative services, such as civil protection, e-care, and troop car management. However, the design and the deployment of collaborative applications in MANET scenarios raises new group management challenges. In particular, MANET characteristics, e.g., unpredictable and frequent mobility of users/ devices, intermittent device connectivity, continuous variations of network topology, make it impossible any a-priori knowledge about group members availability and ask for novel solutions to handle properly the communication about group members. The paper proposes a context-aware communication model to govern communication on the basis of the characteristics of the communicating parties, such as their location and their profiling information. The model provides communication patterns with different semantics to address both point-to-point and point-to-multipoint communication needs. The paper shows the implementation of the proposed model in the AGAPE framework for the design, deployment, and support of collaborative applications in MANET environments and presents the functioning of the AGAPE communication support in the context of a civil protection application scenario.