Andrzej Jajszczyk

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rovisioning of resilient communication services is a significant aspect of network engineering. One important research issue, which has recently gained attention, is resilience differentiation. The challenge is to enable provision-ing of services with different resilience characteristics such as the availability, continuity and duration of downtimes in the(More)
—A complete system which ensures reliable transmission of streaming flows in Flow-Aware Networks (FAN) is presented and analyzed in the paper. A new congestion control mechanism, called RPAEF (Remove and Prioritize in access Active Elastic Flows), is described in details. It allows for fast acceptance of new streaming flows in the admission control (AC)(More)
— In this paper it is shown that Flow-Aware Networks (FAN), although providing superior transmission quality, may force us to wait for the network resources. Such a situation is inconvenient for the realization of emergency VoIP connections. In order to overcome the presented problem, differentiated blocking along with the Static Router Configuration(More)
Two recovery techniques suited for the Next Generation Internet are studied: traditional protection rings (BLSRs) and a novel, preconfigured protection cycles (<i>p</i>-cycles) technique. Theoretical formulas describing the reliability function as well as Mean Time to Failure are derived. On the basis of our analysis, we show that <i>p</i>-cycles should not(More)
—Applicability of the concept of Flow-Aware Networking (FAN) for QoS assurance in wireless networks is studied in the paper. The link utilization efficiency for six versions of the TCP protocol in the FAN environment is investigated and compared. A new congestion control mechanism for FAN, referred to as RAMAF (Remove and Accept Most Active Flows), has been(More)