Optimal and achievable cost/delay tradeoffs in delay-tolerant networks

Applying the framework of the general setting to mobile wireless DTNs, we evaluate a novel set of geographic routing protocols with delay-tolerant features against both state-of-the-art routing protocols (using their respective average AC/DCs) and also optimal routing (described in terms of the average OC/DC). Compared to the state-of-the-art protocols, our protocols are shown to achieve cost/delay tradeoffs much closer to the optimal one.