Title :
Problems with Providing QoS in EDCA Ad-Hoc Networks with Hidden and Exposed Nodes
Author :
Kosek, Katarzyna
Author_Institution :
Dept. of Telecommun., AGH Univ. of Sci. & Technol., Krakow
Abstract :
In this paper we investigate the problem of providing QoS within IEEE 802.11 EDCA ad-hoc networks. Our study shows that a strong unfairness in medium access between certain nodes may appear. It also shows that the possible unfairness is dependent on the actual placement of nodes. Furthermore, the inability of the four-way handshake mechanism to improve the performance of the analyzed networks is also mentioned. Finally, in the paper we indicate the need of proposing both a new MAC layer protocol and a valid EDCA analytical model including hidden nodes.
Keywords :
access protocols; ad hoc networks; quality of service; wireless LAN; wireless channels; EDCA ad-hoc network; IEEE 802.11; MAC layer protocol; QoS; enhanced distributed channel access function; four-way handshake mechanism; quality of service; Ad hoc networks; Analytical models; Media Access Protocol; Network topology; Performance analysis; Proposals; Quality of service; Telecommunication traffic; Throughput; Traffic control;
Conference_Titel :
INFOCOM Workshops 2009, IEEE
Conference_Location :
Rio de Janeiro
Print_ISBN :
978-1-4244-3968-3
DOI :
10.1109/INFCOMW.2009.5072178
