Triggered by the Infostation system paradigm, nextgeneration wireless networks for personal communication services should be designed to transfer delay-sensitive bursty traffic flows over energy-limited buffer-equipped faded connections. In this application scenario, a still open basic question concerns the closed-form design of scheduling policies minimizing the average transfer-delay under constraints on both average and peak energies. The resulting optimal scheduler allocates stepby-step energy and rate on the basis of both current queue and channel states. We prove that, under the considered energy constraints, the scheduler retains two optimality properties. First, its stability region is the maximal admissible one. Second, the scheduler also minimizes the unconditional average queue-length (e.g., the queue-length averaged over both queue and channel state statistics). © 2008 IEEE.
Minimum-Delay Optimal Scheduling for Delay-Sensitive Bursty-Traffic Connections / Baccarelli, Enzo; Biagi, Mauro; Cordeschi, Nicola; Pelizzoni, C.. - (2008), pp. 251-257. (Intervento presentato al convegno 2008 IEEE International Symposium on Wireless Communication Systems, ISWCS'08 tenutosi a ReykjavIk; Iceland nel 21-24 October 2008) [10.1109/ISWCS.2008.4726056].
Minimum-Delay Optimal Scheduling for Delay-Sensitive Bursty-Traffic Connections
BACCARELLI, Enzo;BIAGI, MAURO;CORDESCHI, Nicola;
2008
Abstract
Triggered by the Infostation system paradigm, nextgeneration wireless networks for personal communication services should be designed to transfer delay-sensitive bursty traffic flows over energy-limited buffer-equipped faded connections. In this application scenario, a still open basic question concerns the closed-form design of scheduling policies minimizing the average transfer-delay under constraints on both average and peak energies. The resulting optimal scheduler allocates stepby-step energy and rate on the basis of both current queue and channel states. We prove that, under the considered energy constraints, the scheduler retains two optimality properties. First, its stability region is the maximal admissible one. Second, the scheduler also minimizes the unconditional average queue-length (e.g., the queue-length averaged over both queue and channel state statistics). © 2008 IEEE.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.