Access point-coordinated contention resolution for channel access in wireless LANs

MAHBOOB, AHMED M. Access Point-Coordinated Contention Resolution for Channel Access in Wireless LANs. (Under the direction of Assistant Professor Khaled A. Harfoush.) The most widely deployed wireless networking (WLAN) standard, 802.11, grants access of the wireless channel to contending stations (STAs) through the Carrier Sense Multiple Access/Collision avoidance (CSMA/CA) mechanism. This approach in general is not scalable, is biased against the network's Access Point (AP), and does not satisfy the Quality-of-Service (QoS) requirements of different flow types. These problems persist even in the most recently ratified standard, 802.11e. In this thesis, we propose a new channel access scheme, ARC (Access Point-Coordinated Contention Resolution for Channel Access) that demotes contention and promotes coordination among wireless STAs. ARC enhances the 802.11 contention-based standards with an efficient messaging protocol between the AP and the STAs, in order to communicate congesti...

• Type: Conference
• Year: 2009
• Where: ISCC
• Authors: Ahmed M. Mahboob, Manjunath M. Prabhu, Khaled A. Harfoush
• Keywords: Access Point-Coordinated Contention, Channel Access, Communications, ISCC 2009, Point-Coordinated Contention Resolution