Tag Archives: CSMA

11/03/2015 – Talk by Robbe Block

Title: Spatial Fairness in Multi-Channel CSMA Line Networks
Time: 14:00
Location: Meeting Room, building Zeta
Type: Research Result
Speaker: Robbe Block (University of Antwerp)
In this talk we will consider a line of wifi-hotspots placed in a single line. Starting from earlier results, we will show the steady state of this system has a product form solution and using this product form, a fast method to calculate the per-hotspot throughput will be given. Furthermore, for a single channel setting it was shown in previous work that a simple formula could be used to achieve fairness among the different nodes in the network. It will be shown that the same formula still achieves fairness in the multi-channel setting in either heavy or low traffic conditions, but no such simple formula exists in general. However, through numerical experiments, we see that the fairness index of the multi-channel system still remains very close to one, meaning the simple formula eliminates most of the unfairness in the network.