Showing papers by "Antonio Iera published in 1994"
14 Nov 1994
TL;DR: Results show that performance of D-RMA protocols are superior when compared with a traditional "non-dynamic" protocol, both in terms of offered GoS to carried services and number of activable connections in a microcell at the same time.
Abstract: A dynamic reservation multiple access (D-RMA) protocol for future third generation cellular mobile radio systems, which is explicitly designed for supporting multimedia traffic, is proposed and its behavior is investigated under variable traffic conditions Its structure is based on traditional PRMA++ protocol In addition to PRMA++, a dynamic adaptation of percentage of bandwidth to use for reservation within a frame to traffic condition, is permitted, this having the main goal to guarantee the required grade of service (GoS) to multimedia services The goal is also achieved by providing for a suitable bandwidth allocation strategy, which assigns to different broadband services a different amount of frequency resource, and by coupling it with a suitable management scheme for the base station reservation buffer Obtained results show that performance of D-RMA protocols are superior when compared with a traditional "non-dynamic" protocol, both in terms of offered GoS to carried services and number of activable connections in a microcell at the same time >
13 citations
14 Nov 1994
TL;DR: This paper presents a study on the management of bursty loss-sensitive sources traffic in ATM (asynchronous transfer mode) networks and confirms that the introduction of a per-burst monitoring component contributes both to increase network performance and to improve network resource utilization.
Abstract: This paper presents a study on the management of bursty loss-sensitive sources traffic in ATM (asynchronous transfer mode) networks. In particular, the study is focused on the policing mechanisms, which allow the active connections traffic to be monitored in order to avoid congestion. A new policing mechanism, "double threshold avalanche tagging" (DTAT) is developed and its behaviour is tested using an ATM network model and assuming homogeneous sources. In such a new mechanism the advantage of adding a per-burst marking component to traditional per-cell marking based mechanisms, such as VLB (virtual leaky bucket) and AT (avalanche tagging), is considered. The results obtained confirm that the introduction of a per-burst monitoring component contributes both to increase network performance and to improve network resource utilization. >
14 Nov 1994
TL;DR: An upper bound on burst loss probability, which can be used at the call set up phase, has been computed and is useful for assuring a given network quality of service to each accepted virtual circuit, when the new method is adopted.
Abstract: In this paper a study on a link buffer multiplexing scheme, fast buffer reservation (FBR), has been developed. A method for statistically reserving link buffers space to virtual circuits sharing a transmission resource in ATM networks is proposed. It takes advantages from the bursty nature of traffic while preserving user burst integrity. Effective network performance improvements has been observed by simulating real system behaviour in presence of homogeneous sources traffic for different burstiness values. An upper bound on burst loss probability, which can be used at the call set up phase, has been computed. It is useful for assuring a given network quality of service to each accepted virtual circuit, when the new method is adopted. >