Service Differentiation Using Managed Sleep in CSMA/CA Networks

Performance of multimedia and real-time applications such as streaming video and voice over IP is easily degraded by a high network traffic load. Current Internet infrastructure provides no special assistance for these sensitive applications. One solution to this problem is to introduce Quality of Service (QoS) into today's most common networking protocols. Many different mechanisms for bringing quality of service to computer networks have been proposed, but less research has been aimed specifically at the data link layer of wireless networks. Implementing quality of service in wireless networks is an especially daunting challenge, due to the dynamic medium of wireless communication. Wireless networks are becoming an increasingly important component of modern computer networks, so this shortcoming cannot be ignored. This thesis proposes a new protocol called Carrier Sense Multiple Access with Collision Avoidance and Managed Sleep, or CSMA/CA/MS. This protocol uses admission control techniques to bring better than best effort quality of service to wireless networks. A lightweight microeconomic-based pricing model makes use of wireless power management features to determine which stations have access to the network resources. The entire system is practical to implement based on current wireless technologies and protocols. CSMA/CA/MS is shown to provide dynamic service differentiation while maintaining high utilization of network resources.

Grantor dc:publisher

Wake Forest University

Year dc:date.issued

2009

Author dc:creator

• Weitzen, Christopher

• Computer Science

Language dc:language.iso

en_US

Handle dc:identifier.uri

http://hdl.handle.net/10339/14931

OAI identifier oai:identifier

oai:wakespace.lib.wfu.edu:10339/14931