Cross-Layer Congestion Control, Routing and Scheduling Design in Ad Hoc Wireless Networks

Abstract— This paper considers jointly optimal design of crosslayer congestion control, routing and scheduling for ad hoc wireless networks. We first formulate the rate constraint and scheduling constraint using multicommodity flow variables, and formulate resource allocation in networks with fixed wireless channels (or single-rate wireless devices that can mask channel variations) as a utility maximization problem with these constraints. By dual decomposition, the resource allocation problem naturally decomposes into three subproblems: congestion control, routing and scheduling that interact through congestion price. The global convergence property of this algorithm is proved. We next extend the dual algorithm to handle networks with timevarying channels and adaptive multi-rate devices. The stability of the resulting system is established, and its performance is characterized with respect to an ideal reference system which has the best feasible rate region at link layer. We then ...

• Type: Conference
• Year: 2006
• Where: INFOCOM
• Authors: Lijun Chen, Steven H. Low, Mung Chiang, John C. Doyle
• Keywords: Communications, Congestion Control, Hoc Wireless Networks, INFOCOM 2006, Resource Allocation