Malabika Sengupta

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Distributed lightpath establishment in WDM optical networks involves, apart from routing, two important steps, namely wavelength selection and wavelength reservation. In uni-wavelength reservation protocols, often multiple connection requests unknowingly compete for the same wavelength, even when other free wavelengths are available, resulting in a(More)
In WDM optical networks, during wavelength reservation if two or more requests compete for the same wavelength even when other free wavelengths are available, a collision occurs. An appropriate selection of wavelength is therefore very important to avoid such conflicts. Markov model is very effective to reduce such conflicts by guessing a wavelength in(More)
During wavelength reservation in Wavelength Division Multiplexed (WDM) optical networks, often multiple connection requests unknowingly compete for the same wavelength, even when other free wavelengths are available, resulting in a collision. The Markov model used in Markov Based Reservation Protocol (MBRP), is very effective to reduce such conflicts by(More)
Methods Data were from the 2007 NHHCS a nationally representative probability sample survey. Medical records of 4,683 current home health patients (Weighted N=1,459,900) were sampled from 677 participating home health agencies (Weighted N=12,300). Therapeutic classes analyzed were Nutritional Products (NP) (vitamins and minerals alone or in combination) and(More)
In WDM optical networks, wavelength is the critical resource for efficient communication of traffic. Hence, suitable protocols are required to allocate and use the wavelengths efficiently. We have studied the wavelength reservation protocols of such networks, which are already developed and reported in literature. Following their historical development, we(More)
In GMPLS based WDM optical networks, a suitable signaling protocol is used to dynamically set up lightpaths. An important step, apart from routing and wavelength selection, in lightpath establishment is wavelength reservation. Protocols for wavelength reservation, as a part of signaling protocols, aim to minimize the blocking of lightpaths, which arises due(More)
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