Abstract: Development and projections of wireless PDAs enable to envisage the design of new application classes that exploit short range and direct communications (e.g. one-hop communications). In a close future we may imagine mobile users dynamically and spontaneously exchanging information as soon as they are close enough. In such a context, a connection between two nodes may be broken at any time because of the unconstrained mobility of the nodes and the short communication range. Therefore transmitting data in the most efficient and reliable way becomes a real challenge. To give a first solution to this problem, we propose a mobility-aware software architecture that estimate the duration of a communication link before processing information exchanges.