A credit-based home access point (CHAP) to improve application performance on IEEE 802.11 networks

Authors:
Choong-Soo Lee;Mark Claypool;Robert Kinicki
Affiliations:
Worcester Polytechnic Institute, Worcester, MA, USA;Worcester Polytechnic Institute, Worcester, MA, USA;Worcester Polytechnic Institute, Worcester, MA, USA
Venue:
MMSys '10 Proceedings of the first annual ACM SIGMM conference on Multimedia systems
Year:
2010

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Abstract

Expanded high speed Internet availability and decreased wireless technology costs have increased the number of residential computers wirelessly connected to the Internet. While residential users run applications with a wide range of network requirements, these applications receive identical treatment from most wireless access points (APs). Although delay sensitive applications can suffer increased latency in the presence of throughput intensive applications, wireless APs contain few tools to mitigate these effects beyond explicitly classifying traffic based on port numbers or host IP addresses. We propose a Credit-based Home Access Point (CHAP) that features credit-based queue management designed to eliminate the need for explicit AP configuration of per-application quality. Based on wireless conditions, CHAP dynamically adjusts flow priorities to better satisfy their application requirements. Preliminary comparisons with DropTail and Strict Priority Queuing (SPQ) demonstrate the merits of our CHAP approach.