Service discovery with time constraints in mobile ad hoc networks

In service discovery protocols for MANETs, a key problem is to reduce the energy consumption and keep the system operating despite the occurrence of faults. In this paper, we propose a location-aware service discovery protocol that consists of a service selection, a service discovery and service invocation mechanisms. A service selection mechanism applies a data aggregation scheme in intermediate nodes to reduce the message replies in these networks. A service discovery mechanism adjusts the search area for each specific request and considers the requesting node’s location, the request response time and the maximum node speed to provide fault tolerance in order to deliver packets in adversarial environments. A service invocation mechanism sets up how the services could be accessed and used. Results show that these mechanisms make it possible to maintain the trade off between the discovery success rate and the message reply reduction, hence minimizing the network traffic.