Fast Power Control for Cross-Layer Optimal Resource Allocation in DS-CDMA Wireless Networks

—This paper presents a novel cross-layer design for joint power and end-to-end rate control optimization in DSCDMA wireless networks, along with a detailed implementation and evaluation in the network simulator ns-2. Starting with a network utility maximization formulation of the problem, we derive distributed power control, transport rate and queue management schemes that jointly achieve the optimal network operation. Our solution has several attractive features compared to alternatives: it adheres to the natural time-scale separation between rapid power control updates and slower end-to-end rate adjustments, and uses simplified power control mechanisms with reduced signalling requirements. We argue that these features are critical for a successful real-world implementation. To validate these claims, we present a detailed implementation of a crosslayer adapted networking stack for DS-CSMA ad-hoc networks in ns-2. We describe several critical issues that arise in the implementation,...

• Type: Conference
• Year: 2009
• Where: ICC
• Authors: Marco Belleschi, Lapo Balucanti, Pablo Soldati, Mikael Johansson, Andrea Abrardo
• Keywords: Communications, End-to-end Rate, End-to-end Rate Control, ICC 2009, Power Control