The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
OPS (optical packet switching) networks are considered as one of promising candidates for new generation network architecture. However, optical RAM has not been realized yet. Hence, high packet loss probability is a serious issue on feasible OPS networks. Now, there are some ways to solve this issue. The first approach is the usage of congestion avoidance devices like wavelength converter, fiber delay...
In Multiple Fibers Optical Packet Switched (MF-OPS) networks, multiple data on one wavelength can be transmitted over multiple fibers. Therefore, it is important to consider the multiple fibers' resources in wavelength assignment problem. This paper focuses on this problem and proposes a wavelength assignment method smoothing available fiber resources for MF-OPS networks. As a result, the paper clarifies...
In optical packet switching networks, there are some limitations on the number of wavelength converters and the number of wavelengths which can be handled at edge nodes. Therefore, the packet loss tends to occur frequently at a certain hot-spot egress node. In this paper, we propose a novel method that reduces frequency of wavelength conversions on egress node by intentionally and adaptively converting...
Matrix type high-speed optical packet/burst switch is developed that shares high-cost devices for contention avoidance, such as tunable wavelength converters (TWCs) or fiber delay lines (FDLs). In such kind of architectures, there is a technical issue that an overloaded flow causes not only high packet loss probability of itself but also higher packet loss probabilities of other normal flows. We propose...
In OPS networks, the contention resolution is one of the main problems. To reduce these contention events, we aim the effective use of wavelength resources with a routing and wavelength assignment method. In addition to this, the collision avoidance devices, such as wavelength converters, can improve the network performance more flexibly. The proposed method focuses on not only how to assign route...
We have proposed a packet contention resolution scheme that is based on the reflection routing, and furthermore enables to detour the reflected packet to alternate path by making better use of the link reflection latency. In this paper, we propose priority control using buffer threshold, evaluate the influence of optical buffer size and buffer threshold as parameters, and analyze what condition is...
This paper presents the cooperation method, which cooperatively deals with RWA problem in distributed optical burst switched networks. The simulation results show that this method improves the burst loss probability
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.