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In a typical wireless sensor network, one of the primary tasks of sensor nodes is to gather data and give accurate measurements of sensing environment. Thus, obtaining a fair amount of data from each sensor node plays a key role to achieve this objective. In this paper, we investigate upper bounds on network utilization of multi-hop wireless grid sensor networks with 3-4 rows. We adopt a fair-access...
This paper investigates fundamental performance limits of medium access control (MAC) protocols for particular underwater multi-hop sensor networks under a fair-access criterion requiring that sensors have an equal rate of underwater frame delivery to a base station. Tight upper bounds on network utilization and tight lower bounds on minimum time between samples are derived for fixed linear topology...
A medium access control (MAC) protocol to address the so-called unreachability problem in mobile ad hoc networks is proposed. Stations maintain double hop neighborhood graphs and exchange designated eMAC tables to share their knowledge about their neighborhood topology. An adaptive table broadcasting technique to facilitate topology information dissemination in mobile ad hoc networks is also proposed...
The standard IEEE 802.11 has been shown to be quite inefficient in multihop networks. In addition to the hidden-terminal and exposed-terminal problems, there is also an unreachability problem, which may result in link/routing failures and unfairness among multiple traffic flows. In this paper, a medium access control (MAC) protocol, called eMAC, is proposed. Under the proposed scheme, stations maintain...
The IEEE 802.11 has been shown to be quite inefficient in multihop networks. Besides the problems of hidden terminal and exposed terminal, there is also unreachability problem, which may result in link/routing failures and unfairness among multiple traffic flows. In this paper, a novel medium access control (MAC) protocol, called eMAC, is proposed. Under the proposed scheme, stations maintain double...
Multi-hop underwater acoustic sensor networks constrain the performance of medium access control protocols. The efficiency of the well-known RTS-CTS scheme is degraded due to long propagation delays of such networks. Recently, interest in Aloha variants has surfaced; however, the performance of such protocols within the context of multi-hop networks is not well studied. In this paper, we identify...
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