Path Protection in Impairment-Aware WDM Networks
نویسنده
چکیده
One of the major problems facing e-commerce, e-government and Internet users, in general, is the reliability of data transfers across the network. The installation of optical networks has certainly helped to increase the speed and reliability of data communication but network survivability still remains a challenge. Imagine what would happen in the banking sector if transactions cannot be processed because of poor network performance. The cost of providing separate systems with massive redundancies has been excessively high. As such, a number of researchers have tried to solve the problem of network reliability and, in particular, how to improve network performance in impairment-aware WDM networks. This survey is about their research.
منابع مشابه
A Novel Protection Guaranteed, Quality of Transmission Aware Routing and Wavelength Assignment Algorithm for All-optical Networks
Transparent All Optical Networks carry huge traffic and any link failure can cause the loss of gigabits of data; hence protection and its guarantee becomes necessary at the time of failure. Many protection schemes were presented in the literature, but none of them speaks about protection guarantee. Also, in all optical networks, due to absence of regeneration capabilities, the physical layer i...
متن کاملDynamic Power-aware Shared Path Protection Algorithms in WDM Mesh Networks
In this paper, we investigate the dynamic establishment of dependable connections in wavelength division multiplexing (WDM) mesh networks with the objectives of power saving and resource efficiency. According to the resource usage, i.e., assigned for primary paths, backup paths or free, and the state of network components (nodes and fiber links), i.e., active, sleep or off, we propose a dynamic...
متن کاملPerformance Comparison of Protection Strategies in WDM Mesh Networks
Recent development in optical networking employing wavelength division multiplexing (WDM) fulfills the high bandwidth demand applications. Failure of such networks, leads to enormous data and revenue loss. Protection is one of the key techniques, which is used in designing survivable WDM networks. In this paper we compare dedicated and shared protection strategies employed in WDMmesh networks t...
متن کاملOn the Partial Path Protection Scheme for Wdm Optical Networks and Polynomial Time Computability of Primary and Secondary Paths
As a generalization of the traditional path protection (PP) scheme in WDM networks where a backup path is needed for each active path, the partial path protection (PPP) scheme uses a collection of backup paths to protect an active path, where each backup path in the collection protects one or more links on the active path such that every link on the active path is protected by one of the backup...
متن کاملSchool of Computer Science Literature Review and Survey (0360-510, Fall 2006) Heuristics for Traffic Grooming in WDM Optical Networks with Shared Path Protection
The emergence of wavelength division multiplexing (WDM) technology has significantly increased the transmission capacity of a link in today's optical networks. In WDM networks, the bandwidth request of a traffic stream is usually much lower than the capacity of a wavelength. Traffic grooming can aggregate low-rate connections onto high-capacity optical fibers to make an efficient use of the ban...
متن کامل