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Supervisory Control and Data Acquisition (SCADA) systems play a crucial role in national critical infrastructures, and any failure may result in severe damages. Initially SCADA networks were separated from other networks and used proprietary communications protocols that were well known only to the device manufacturers. At that time such isolation and obscurity ensured an acceptable security level...
The paper concerns bandwidth allocation problem on the telecommunication market where there are many sellers and buyers. Sellers offer the bandwidth of telecommunication links. Buyers are interested in the purchase of the bandwidth of several links that makes up an end-to-end connection between two nodes of telecommunication network. We analyze three auction models supporting such a bandwidth exchange:...
The multicommodity exchange for trading bandwidth commodities in undirected networks, in the form of the BUCBT bandwidth exchange model, is presented. The BUCBT model allows for the most efficient allocations of undirected resources. An associated allocation model is formulated as a multicommodity network flow problem with directed flows. The equivalence of the associated model to the undirected bandwidth...
Since the telecommunication market becomes more complex and dynamic, a strong need for a new, efficient and flexible bandwidth trading mechanisms appears. We believe that good mechanisms, that allow effective and fair allocation of bandwidth between market participants will help to develop the real competitive bandwidth market. In this paper we compare two different double-sided bandwidth auction...
In this paper we present a multicommodity bandwidth exchange model for balancing aggregated communication bandwidth resources (BACBR) that allows us to aggregate similar offers. In this model offers submitted to sell (or buy) the same, similar, or equivalent network resources (or demands for end-to-end connections) are aggregated into single commodities. BACBR model is based on the balancing communication...
In this paper we present the multicommodity auction model BCBT-I that allocates indivisible network resources among bidders. The approach can be considered as a generalization of the basic multicommodity model for balancing communication bandwidth trade (BCBT). The BCBT model assumes that offers concerning inter-node links and point-to-point bandwidth demands can be realized partially. However, in...
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