Title :
Differentiation mechanisms for IEEE 802.11
Author :
Aad, Imad ; Castelluccia, Claude
Author_Institution :
INRIA, Rhone-Alpes, France
Abstract :
The IETF is currently working on service differentiation in the Internet. However, in wireless environments where bandwidth is scarce and channel conditions are variable, IP differentiated services are sub-optimal without lower layers´ support. We present three service differentiation schemes for IEEE 802.11. The first one is based on scaling the contention window according to the priority of each flow or user. The second one assigns different inter-frame spacings to different users. Finally, the last one uses different maximum frame lengths for different users. We simulate and analyze the performance of each scheme with TCP and UDP flows
Keywords :
IEEE standards; access protocols; packet radio networks; quality of service; telecommunication standards; transport protocols; CSMA/CD; IEEE 802.11 protocol; IEEE 802.11 standard; IETF; IP differentiated services; MAC sub-layer; QoS; TCP flow; UDP flow; bandwidth; channel conditions; contention window scaling; differentiation mechanisms; flow priority; inter-frame spacing; maximum frame length; medium access control; performance analysis; performance simulation; transport control protocol; user datagram protocol; wireless environments; Analytical models; Bandwidth; Computational modeling; Delay; HTML; Mobile communication; Programmable logic arrays; Quality of service; Web and internet services; Wireless communication;
Conference_Titel :
INFOCOM 2001. Twentieth Annual Joint Conference of the IEEE Computer and Communications Societies. Proceedings. IEEE
Conference_Location :
Anchorage, AK
Print_ISBN :
0-7803-7016-3
DOI :
10.1109/INFCOM.2001.916703
