Wang, Lin and Fernández Anta, Antonio and Zhang, Fa and Hou, Chenying and Liu, Zhiyong (2012) EnergyEfficient Network Routing with Discrete Cost Functions. In: The 9th Annual Conference on Theory and Applications of Models of Computation (TAMC 2012), The Turing Year 2012 in China, 1621 May 2012, Beijing, China.

PDF (EnergyEfficient Network Routing with Discrete Cost Functions)
 Published Version
Download (263Kb)  Preview 
Abstract
Energy consumption is an important issue in the design and use of networks. In this paper, we explore energy savings in networks via a rate adaptation model. This model can be represented by a costminimization network routing problem with discrete cost functions. We formulate this problem as an integer program, which is proved to be NPhard. Then a constant approximation algorithm is developed. In our proposed method, we first transform the program into a continuouscost network routing problem, and then we approximate the optimal solution by a twostep rounding process. We show by analysis that, for uniform demands, our method provides a constant approximation for the uniform network routing problem with discrete costs. A bicriteria network routing problem is also developed so that a tradeoff can be made between energy consumption and network delay. Analytical results for this latter model are also presented.
Item Type:  Conference or Workshop Papers (Paper) 

Uncontrolled Keywords:  network optimization, network routing, approximation 
Subjects:  Q Science > Q Science (General) Q Science > QA Mathematics > QA75 Electronic computers. Computer science T Technology > T Technology (General) T Technology > TA Engineering (General). Civil engineering (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering 
Divisions:  Faculty of Engineering, Science and Mathematics > School of Electronics and Computer Science 
Depositing User:  Antonio Fernandez 
Date Deposited:  07 Nov 2012 09:21 
Last Modified:  15 Dec 2016 12:20 
URI:  http://eprints.networks.imdea.org/id/eprint/356 
Actions (login required)
View Item 