Modular Design for Optimal Cross-Layer Flow Control in CDMA Networks
Konferenz: European Wireless 2005 - 11th European Wireless Conference 2005 - Next Generation wireless and Mobile Communications and Services
10.04.2006 - 13.04.2005 in Nicosia, Cyprus
Tagungsband: European Wireless 2005
Seiten: 7Sprache: EnglischTyp: PDFPersönliche VDE-Mitglieder erhalten auf diesen Artikel 10% Rabatt
Price, Jennifer; Javidi, Tara (University of California San Diego, Department of Electrical and Computer Engineering, USA)
In this paper, we consider a wideband CDMA network with arbitrary layout and variable MAC-rate assignments, which is connected to a traditional wired IP network. We show that by using an optimization framework, it is possible to construct an overlay system at theMAC and transport layers which regulates rates separately based on the congestion and interference constraints. These rates are coordinated through the addition of an intermediate queue at each wireless source (MAC Queue). With the addition of these intermediate queues and only minor modifications to existing transport layer protocols, a cross-layer optimal rate assignment solution is achieved. Finally, we conduct simulation studies comparing this modular approach with a previously developed cross-layer approach, with a particular interest in delay.