Design and performance modeling for traffic control in wireless links

Wireless traffic control has been investigated in the last few years proposing extensions of well-known wireline traffic control algorithms. In this context channel state dependent (CSD) packet scheduling has been perceived as a research field of great potentials and numerous wireless traffic control algorithms have been designed combining CSD packet scheduling with fair queuing and hierarchical link-sharing disciplines, which are both rate-based approaches. A novel theoretical basis for design and evaluation of wireless traffic control is proposed in this paper. This, rather than simply focusing on fair and/or flexible management of bandwidth, proposes a number of delay, bandwidth and data-loss metrics which wireless traffic control design should optimize. In particular, separate impact of congestion and channel impairments on data-loss is considered the theoretical basis. Wireless traffic control architecture is then developed from the well-performing rate-controlled earliest deadline first (RC-EDF) framework by applying CSD packet scheduling and a number of traffic regulation measures. Its performance is assessed against the presented set of metrics.