Showing papers by "Gam D. Nguyen published in 1999"
31 Oct 1999
TL;DR: It is shown that the incorporation of energy considerations into multicast algorithms can improve performance, and several algorithms for defining multicast trees when transceiver resources are limited are proposed.
Abstract: We address the problem of multicasting in military ad hoc networks from the viewpoint of energy efficiency. We discuss the impact of the wireless medium on the multicasting problem and the fundamental trade-offs that arise, and we propose and evaluate several algorithms for defining multicast trees when transceiver resources are limited. The algorithms select the relay nodes and their transmission power levels, and provide different degrees of scalability and performance. We show that the incorporation of energy considerations into multicast algorithms can improve performance.
147 citations
01 Jan 1999
TL;DR: This work develops several heuristic variations of the basic technique that improve the speed and accuracy of the search, and demonstrates that there can be significant increase of the achievable throughput value via the optimization method as compared to other ad-hoc techniques for the maximization of throughput.
Abstract: We consider the off-line determination of the offered load that maximizes throughput in circuit-switched, wireless multihop networks, subject to Quality of Service (QoS) constraints on circuit blocking probability. This problem is of interest in network design for “sizing” the service capabilities that can be provided. We consider a rigorous formulation of the problem as a nonlinear optimization problem with nonlinear inequality constraints, and employ Lagrangian techniques for its solution. We develop several heuristic variations of the basic technique that improve the speed and accuracy of the search, and we demonstrate that there can be significant increase of the achievable throughput value via the optimization method as compared to other ad-hoc techniques for the maximization of throughput.