Planning Frequency Reconfiguration in Multi-Channel and Multi-Radio FiWi Access Networks

摘要

FiWi architectures provide a feasible paradigm for high bandwidth and ubiquity at the access network areas. In these architectures an effective assignment of frequencies to radios must be done to provide the best throughput and delay values and to extract the best performance from these multi-radio and multi-channel scenarios. However, as traffic conditions vary over time, radio channel configurations may became staled and some reconfiguration process must occur so that performance levels remain. In this article we discuss a methodology for frequency reassignment planning that attempts to increase throughput and to reduce delay while avoiding service disruption, all important features for the experienced QoS. By carefully planning the frequency assignments, our algorithm increases the number of parallel transmissions, when compared to common fixed assign strategies, thus enabling a better quality of experience for the users at the access network.