Energy-efficient routing and wavelength assignment for WDM networks with mixed line rates | |
| Author | Phatheera Jaisin |
| Call Number | AIT Thesis no.TC-12-02 |
| Subject(s) | Wavelength division multiplexing Light--Wave-length Routers (Computer networks) Optical communications |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Telecommunications |
| Publisher | Asian Institute of Technology |
| Abstract | Due to increasing concerns on the energy crisis and on damages to the environment, reducing the energy consumption in telecommunication networks has become a research topic in recent years. Designs and operations of transparent wavelength division multiplexing (WDM) networks have significant impacts on the energy efficiency of telecommunication infrastructures. Since future applications will likely create heterogeneous traffic demands with diverse bit rates, future WDM networks should be heterogeneous in nature where a single fiber link may carry varying transmission line rates on different wavelength channels, resulting in so-called mixed line rate (MLR) WDM networks. We investigate the energy efficiency of MLR WDM networks in comparison to conventional WDM networks with the same line rate for every fiber link. In addition, we compare the energy efficiency in MLR WDM networks with and without traffic grooming. Compared to existing works on MLR WDM networks, we provide an alternative optimization formulation based on integer linear programming (ILP) where an individual wavelength channel corresponds to the same line rate throughout the network. The additional constraint enables the same network to dynamically support different sets of traffic demands through reconfiguration of optical switches. In addition, our ILP formulation reduces the computational complexity involved in optimizing the operations of MLR WDM networks. |
| Year | 2012 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Information and Communications Technologies (DICT) |
| Academic Program/FoS | Telecommunications (TC) |
| Chairperson(s) | Poompat Saengudomlert; |
| Examination Committee(s) | Teerapat Sanguankotchakorn;Ahmed, Kazi Mohiuddin |
| Scholarship Donor(s) | Royal Thai Government Fellowship; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2012 |