Modified MAC for Priority Traffic with Slow Decrease of Contention Window and Reservation Based Packet Forwarding in IEEE 802.11 for QoS Provisioning

Author

Puthal, D.K. ; Sahoo, Bibhudatta ; Turuk, Ashok Kumar ; Nandi, Mrinal

Author_Institution

Dept. of Comput. Sci. & Eng., Nat. Inst. of Technol., Rourkela, India

fYear

2008

fDate

17-20 Dec. 2008

Firstpage

195

Lastpage

196

Abstract

IEEE 802.11 lacks of the capability to support quality of services such as multimedia and real-time traffic properly. This paper presents a simple approach to enhance the multimedia real-time performance over the 802.11 WLAN by implementing a Quality Of Service Manager (QoSM) for differentiating services with two queues on top of the 802.11 medium access controller. With slow decrease of contention window (SD) and reservation based packet forwarding. The proposed scheme is verified with the help of ns-2 and an improved performance for multimedia real-time service in the infrastructure-based WLAN with the coexistence of the non-real time traffic.

Keywords

DiffServ networks; access protocols; multimedia communication; quality of service; queueing theory; telecommunication congestion control; telecommunication traffic; wireless LAN; IEEE 802.11 WLAN MAC; QoS provisioning; contention window; medium access controller; network priority traffic; quality of service manager; queueing theory; real-time multimedia service; reservation based packet forwarding; service differentiation; Computer science; Information technology; Media Access Protocol; Physical layer; Quality management; Quality of service; Streaming media; Throughput; Traffic control; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Technology, 2008. ICIT '08. International Conference on

Conference_Location

Bhubaneswar

Print_ISBN

978-1-4244-3745-0

Type

conf

DOI

10.1109/ICIT.2008.44

Filename

4731324