Network control planes have made an implicit assumption that the switching devices in a network are symmetric. In wavelength-switched optical networks even the most basic switching element, the reconfigurable add-drop multiplexer, is highly asymmetric. This paper presents a model of optical switching subsystems for use in generalized multiprotocol label… (More)
Active and passive optical networks are compared. Based on a reference model that covers AON and PON as well as the interfacing equipment, the different sites and locations in an access network are identified. Such a reference model is necessary in order to make a proper techno-economical comparison between the various optical access network architectures.… (More)
We propose a fibre access network paradigm achieving low latency, high throughput and energy efficiency, by combining the best of PON and AON, optical and electrical forwarding, and the concepts of software defined networks, flexible grid, and cache assisted networking.
Next-generation optical access networks will deliver substantial benefits to consumers including a dedicated high-QoS access to bit rates of hundreds of Megabits per second. They must also deliver significant benefits to network owners/operators to justify the needed infrastructure investment expected to reach billions of Euros. Benefits to network… (More)
This paper focuses on the problem of coherent resource allocation within home and access networks. The interdomain QoS signaling discussed here enables the initiation of the QoS provisioning in the home and access from the end device in users home. The home network considered in this paper is UPnP-QoS enabled while the access network is GMPLS based. We… (More)
Active optical networks (AONs) have been one of the most deployed fiber access solutions in Europe. However, with the increasing traffic demand, the capacity of the existing AONs is becoming insufficient. For the legacy AONs, there are two major variants of architectures, namely, point-to-point and active star. Considering the different characteristics of… (More)
Distribution of media data over the Internet is increasing in popularity and volume. This poses challenges not only for network operators but also for service providers when it comes to serving the demand in a cost-efficient way. In this paper, we approach this problem by investigating the potential of co-operative approaches where locality in space (users… (More)