On-demand routing with unidirectional link using path loss estimation technique

Abstract

Most on-demand Mobile Ad Hoc etwork (MA ET) routing schemes typically assume operation over symmetrical and bidirectional routing paths, both of which are not feasible due to the inherent heterogeneous properties of wireless devices. Radio links between a set of wireless devices may be asymmetrical and unidirectional as a result of factors such as high mobility, packet collisions due to interference and differences in terms of transmission power assigned to the devices. In this paper, an efficient routing scheme based on the path loss estimation technique is proposed. The proposed scheme effectively reduces the probability of selecting routing paths with unidirectional links by predicting the symmetrical properties of the link. In addition, nodes choose the link with the lowest path loss and estimate the received power in the reverse direction. As such, the number of unreliable links formed along the routing path can be minimized. The proposed scheme is compared against AODV-EUDA, AODV, and AODV-Blacklist, which provides support for unidirectional link detection and avoidance. Simulation results shows that the proposed scheme improves the number of packet transmitted by as much as 53%.

Arbitrary Transmission Power in the SINR Model: Local Broadcasting, Coloring and MIS

“…If a node has multiple roles it might have to adapt its transmission power frequently. On the other hand, the effects of heterogeneous transmission power are considered in simulation-based studies for example in [6,16], while the case of unidirectional communication links, which are a result of heterogeneous transmission powers, is studied even more frequently [23,19].…”