Migrating constrained optical tree in wireless WDM systems
نویسندگان
چکیده
Absfmcr As WDM-based optical networks are becoming the right choice for the next-generation Internet networks to transport high-speed IP traflic, the leading role of wireless ATM (WATM) networks will be undoubtedly replaced with wireless WDM (WWDM) networks for providing high quality of services to mobile users. Meanwhile, multicasting has played an increasingly important a e in many conventional and emerging applications, such as teleconferencing and distributed games. In this paper, a constrained Optic01 Tree Migralion Scheme (COTMS) is proposed to support multicast services in WWDM networks. COTMS is an enhancemento f our previous work, called CTMS 121, for adapting to the Characteristic of WDM-based backbone nehvorb. CTMS can properly deal with the constrained tree migration problem for generic wireless networks, and COTMS inherits the effciencies of CTMS entirely. Simulation results show that COTMS can markedly reduce the resources used per multieast tree, thus achieving both low handoff-droppingljoin-blocking rate and high resource utilization. More importantly, we demonstrate how COTMS incorporating crossover optical switch discovery can be used to support real-time traffic for heterogeneous (i.e., unicast and multicast) connections in a uniform and unified manner. The proposed scheme is also suitable for routing over fully mobile (ad hoc) networks in which multiple frequencies are used for data communications.
منابع مشابه
Novel Four-Channel All Optical Demultiplexer Based on Square PhCRR for Using WDM Applications
Ring resonators have always been referred to as a highly flexible structurefor designing optical devices. In this study, we have designed and simulation a fourchannel optical demultiplexer using square photonic crystal ring resonator. The squarelattice constant for this purpose structure is used. The purposed structure has an averagecrosstalk, transmission coefficient, q...
متن کاملDesign of an Improved Optical Filter Based on Dual-Curved PCRR for WDM Systems
In this paper, an optical filter based on a two dimensional photonic crystalring resonator (PCRR) with triangular lattice is designed and presented. For thispurpose, the effects of positioning, arrangement and the number of the inner rods of thedual-curved PCRR on the performance characteristics of our optical filter such as thetransmission coefficient and the quality factor have been fully inv...
متن کاملVisualizing Survivability Aspects in WDM Networks
The impetus focus is on to provide high data transfer and utilization of high bandwidth, so the era of computer networks completed a journey from co-axial, twisted pairs cables to optical cables migrating from SONET/SDH to WDM technology based networks. This paper deals with various aspects concerned to WDM based networks in context to failure of fiber links in WDM optical networks and the surv...
متن کاملSuppression of Four Wave Mixing Based on the Pairing Combinations of Differently Linear-Polarized Optical Signals in WDM System
Data transmission in optical systems and increased transmission distance capacity benefit by using optical amplification wavelength division multiplexing (WDM) technology. The combination of four waves (FWM) is a non-linear effect in the wavelength division multiplex (WDM), when more than two wavelengths of light in a fiber launch will occur. FWM amount depends on the channel, the channel spaci...
متن کاملIntegrated Optical Components for Wdm Optical/wireless
High-performance, widely tunable MZ and EA modulated analog transmitters suited for WDM optical/wireless applications are overviewed. Further, the potential to use monolithically integrated wavelength converters for these applications is also investigated.
متن کامل