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Multi-granularity transport networks as the core of backbone transmission attract widespread attention with its significant advantages of high bandwidth and energy-saving. Nevertheless, due to the growing of users' demand on bandwidth and the tight situation of global power resources, we need to further improve the capacity and the performance of the data transmission system. In this paper, we propose...
To utilize the wavelength resources of Internet protocol (IP) over wavelength division multiplexing (WDM) optical networks, a multi-constrained multicast traffic grooming algorithm is proposed in this paper. This algorithm can achieve multicast traffic grooming in IP over WDM optical networks under multi-constraints, including the number of optical transceivers, wavelength conversion capability and...
With the vigorous development of Digital Broadcasting, the Internet of Things and Cloud Computing, there are more and more multicast applications in the network, leading to network traffic increases exponentially. Although optical network improves the network transmission capacity enormously, the growing network traffic still poses a challenge for the transport mechanism. Therefore, how to transport...
In this paper, a cross-layer dedicated protection unicast routing scheme is proposed in IP over WDM optical Internet. It can groom the routing requests, establish the protecting path in IP layer and provide the protection for the heavy-load working lightpaths in WDM layer under multi-constraints such as sparse-incomplete wavelength conversion capability and the number of optical transmitters and receivers...
In IP over WDM networks, since there is a large bandwidth gap between a wavelength capacity and the actual bandwidth required by each user, it is necessary to multiplex low-rate traffic streams (LRSs) into lightpaths by traffic grooming. However, with the number of wavelengths increases, a large number of all optical (OOO) transmitting ports are consumed. Meanwhile, the multi-hop grooming with incorporating...
In IP over WDM networks, lightpath bypass is an effective method of decreasing the power consumed by IP routers since this technology can multiplex many requests into one high-capacity lightpath and switch these requests as a single entity in all-optical layer. However, the power consumed by individual lightpaths should also be considered in IP over WDM networks. Therefore, the power efficiency has...
In this paper, we study the waveband switching for wavelength-level demands and the traffic grooming for sub-wavelength-level demands in multi-granularity optical networks and propose a new routing algorithm called multi-granularity grooming based on Integrated Grooming Auxiliary Graph (MG-IGAG) to save the cost by reducing the number of switching ports in optical-cross connects. In MG-IGAG, we develop...
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