A multi-timescale cross-layer approach for wireless ad hoc networks

• Published in: Computer networks (Amsterdam, Netherlands : 1999) Vol. 91; pp. 471 - 482
• Main Authors: Pham, Quoc-Viet, To, Hoang-Linh, Hwang, Won-Joo
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 14-11-2015; Elsevier Sequoia S.A
• Subjects: Ad hoc networks; Delay; Design engineering; Effectiveness; Energy consumption; Fast-fading channels; Links; Lossy links; Mathematical models; Multi-timescale; Optimization; Packet delay; Power allocation; Power consumption; Power control; Rate control; Studies; Time; Traffic congestion; Wireless networks; Multi-timescale; Packet delay; Power allocation; Lossy links; Rate control; Fast-fading channels
• ISSN: 1389-1286; 1872-7069
• DOI: 10.1016/j.comnet.2015.08.007

•We model a cross-layer problem of congestion control, link delay, and power control.•Subproblems are successively solved by the Lagrange duality techniques.•The design can be implemented distributedly and adheres to the timescale difference.•We conduct simulations on MTSRENUM and compare it to the current frameworks.
Conventionally, cross-layer designs with same timescale updates can work well; however, there is a difference in layers’ timescales and each layer normally operates at its corresponding timescale when implemented in real systems. To respect this issue, in this article, we introduce a multi-timescale cross-layer design along with three sets of constraints: congestion control, link delay, and power control and with the objective of maximizing the overall utility and minimizing the total link delay and power consumption. The proposed procedure can be implemented in a distributed fashion, which not only guarantees truly optimal solutions to the underlying problem, but also adheres to the natural timescale difference among layers. Finally, the numerical results further solidify the efficacies of our proposal compared to the current frameworks.