Assessing performance gains via the use of global resource controller for realistic heterogeneous wireless networks
Rahul Amin, Jim C. Martin, H.B. Russell · 2014
We study the resource allocation and management issues related to heterogeneous wireless systems made up of several Radio Access Technologies (RATs) that collectively provide a unified wireless network to a diverse set of users through co-ordination managed by a centralized Global Resource Controller (GRC). We assume that the user devices are multi-modal, which makes it possible for each device to use the Access Point (AP)/Base Station (BS) of any available RAT at any given time. Through detailed protocol level simulations performed in ns-2, we show an increase in spectral efficiency of up to 99.2% and an increase in instantaneous fairness of up to 28.5% for two greedy sort-based user device-to-AP/BS association algorithms implemented at the GRC compared to a distributed solution where each user makes his/her own association decision.