Adaptive, asynchronous rendezvous protocol for opportunistic networks

In opportunistic networks, wireless nodes have to actively probe neighbours to establish intermittent links with minimal energy consumption and latency before transmission begins. The nature of opportunistic networking requires that nodes should discover each other even when: the probing intervals of neighbour nodes are asynchronous and the wake-up patterns are asymmetric. Proposed is a rendezvous protocol to facilitate neighbour discovery while satisfying the above requirement. It is demonstrated that it saves energy about 30% compared to existing schemes by a theoretical analysis.