An Empirical Study on Route Reservation in Inter-Networks

While it is obvious that transmission without route reservation is suitable for a wired data network such as Internet, it is not clear whether this is true in the case of ad hoc wireless networks. To the best of our knowledge, this has not been studied in the literature. In this paper, we investigate the performance of two switching paradigms: reservation-based (RB) and non-reservation based (NRB). In an NRB scheme, no reservation is required before data transmission, data transmission can begin as soon as a source discovers a route. This is the typical scheme used for most of the protocols proposed in the literature. In contrast, in an RB scheme, a source reserves uniquely intermediate nodes on a route for relaying its message. Intermediate nodes agree to relay traffic of one source only while the route is reserved. To the best of our knowledge, such a switching scheme has never been considered in the literature. Although a few analytical models which take into account delay and physical layer characteristics exist for NRB ad hoc wireless networks [1, 2], no analytical models have been reported for RB schemes. In this paper, we quantify the performance tradeoff between these two schemes in terms of throughput, delay, and maximum tolerable node speed. The main purpose of this research is to compare the two schemes route reservation based and non route reservation based schemes. Further, it compares the performance of the two schemes by drawing the chart between the time taken to transfer the message and type of reservation.