Performance modeling of bufferless WDM packet switching networks with wavelength conversion
نویسندگان
چکیده
In this paper we study the performance of bufferless optical WDM packet switching networks with various wavelength conversion degrees. We first introduce an optimal scheduling algorithm that maximizes the network throughput in this type of network. We then derive a novel analytical model to evaluate the network performance in terms of packet loss probability under the scheduling algorithm for Bernoulli traffic. Our model is the first accurate analytical model for bufferless WDM packet switching with variable conversion degrees and can be used to quantitatively determine the minimum wavelength conversion degree required for a certain traffic load. We also conducted simulations to validate the analytical model. Both the analytical and simulation results reveal that limited range wavelength conversion can achieve almost the same network performance as full wavelength conversion.
منابع مشابه
Nonblocking WDM switching networks with full and limited wavelength conversion
In recent years, with the rapid exhaustion of the capacity in wide area networks led by Internet and multimedia applications, demand for high bandwidth has been growing at a very fast pace. Wavelength-division multiplexing (WDM) is a promising technique for utilizing the huge available bandwidth in optical fibers. In this paper, we consider efficient designs of nonblocking WDM permutation switc...
متن کاملModeling and Analysis of WDM OPS Employing Tunable Converter Sharing under Self-Similar Variable Length Packet Traffic
Wavelength division multiplexing (WDM) switching has been emerging as the dominant technology in optical networks. In this paper, we study the switching performance of WDM optical packet switch (OPS) equipped with tunable wavelength converter sharing dedicated to each output fiber line under self-similar variable packet length traffic. In this study, we model WDM OPS employing tunable wavelengt...
متن کاملPerformance Analysis of WDM Networks with Wavelength Conversion
This paper evaluates a circuit-switched multi-hop WDM network with wavelength conversion by a semi-Markov based approach. The proposed technique provides accurate performance prediction while also preserving model flexibility. Whether the wavelength conversion is beneficial or not depends on many factors. The main concerns considered in this paper are the number of wavelengths, packet generatio...
متن کاملOn slotted WDM switching in bufferless all-optical networks
The current λ-switching technology requires each lightpath to occupy the full bandwidth of a wavelength throughout the bufferless all-optical domain. With such a constraint, the granularity of bandwidth is so coarse that the utilization of optical fibers is considerably low. To resolve the granularity problem, a simple way is to incorporate time division multiplexing (TDM) into wavelength divis...
متن کاملDesign-Dimensioning Model for Transparent WDM Packet-Switched Irregular Networks
A detailed analytical traffic model for all-optical wavelength division multiplexing (WDM) photonic packet-switched networks is presented and the requirements for buffer size and link dimensions are analyzed. This paper shows that due to the topology, packets may generate traffic bottlenecks produced by a tendency of the routing scheme to send packets with different destinations through preferr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2003