Packet scheduling and radio resource allocation in an OFDMA system pursue conflicting goals: the latter aims at achieving short-term efficiency, while scheduling aims at guaranteeing fairness among flows in the long term. We propose a scheduler-allocator architecture that successfully manages to integrate both goals in a loose cross-layer strategy. On each time frame the scheduling module selects a list of packets eligible for transmission, with the goal of achieving long-term fairness; the list is then passed to the radio resource allocator, which finds the best allocation given the current channel state. We evaluate the proposed scheme in a single cell scenario. Results point out that our scheme is able to guarantee throughput fairness among flows, while achieving an efficient allocation of radio resources. © 2006 IEEE.
A modular cross-layer scheduling and resource allocation architecture for OFDMA system / Todini, Alfredo; Moretti, M; Valletta, Andrea; Baiocchi, Andrea. - ELETTRONICO. - (2006), pp. 1-6. (Intervento presentato al convegno IEEE Global Telecommunications Conference (GLOBECOM 06) tenutosi a San Francisco; United States nel November 27-December 1 2006) [10.1109/GLOCOM.2006.883].
A modular cross-layer scheduling and resource allocation architecture for OFDMA system
TODINI, Alfredo;VALLETTA, ANDREA;BAIOCCHI, Andrea
2006
Abstract
Packet scheduling and radio resource allocation in an OFDMA system pursue conflicting goals: the latter aims at achieving short-term efficiency, while scheduling aims at guaranteeing fairness among flows in the long term. We propose a scheduler-allocator architecture that successfully manages to integrate both goals in a loose cross-layer strategy. On each time frame the scheduling module selects a list of packets eligible for transmission, with the goal of achieving long-term fairness; the list is then passed to the radio resource allocator, which finds the best allocation given the current channel state. We evaluate the proposed scheme in a single cell scenario. Results point out that our scheme is able to guarantee throughput fairness among flows, while achieving an efficient allocation of radio resources. © 2006 IEEE.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.