Prototyping of time-division unbalanced carrier sense multiple access and first experiments

Abstract

This paper presents the work of prototyping a weakly synchronous and distributed coordination function called Time-Division Unbalanced Carrier Sense Multiple Access (TDuCSMA). The prototype, designed and developed by modification of the wireless Atheros drivers, is meant to demonstrate the feasibility of TDuCSMA and its capabilities in bandwidth management and QoS provisioning. Furthermore, the bandwidth reservation model, derived and verified by simulations in previous works, is validated by real communication experiments.

Supporting triple-play communications with TDuCSMA and first experiments

“…The prototype of a TDuCSMA node [5] is built on top of the 802.11 node as an extension of the wireless Atheros drivers implemented by the ath5k kernel module. This module gives the kernel the capability to easily load and unload the miniPCI wireless card module and to control the inner functioning of the chip.…”

“…In the same work an architecture was proposed to enable the coexistence of TDuCSMA and EDCA entities on the same node. Finally, the TDuCSMA has been prototyped and assessed in [5] with preliminary experiments comprising CBR long lasting data flows.…”