No abstract

Infrastructure networks like power systems can be suitable media for data communication, either as broadband which it is called BPL (Broadband over Power Line) or narrowband which it is known PLC (Power Line Carrier). Also it is claimed that security robustness of complex communication networks like the Internet to an intentional attack (that brings down network nodes) depends on their topology. In this article, we investigate the dependency of BPL data communication network (as a kind of communication networks) security robustness against the intentional attack to the topology of power system that has been ignored in past studies. The analysis is based on graph theory. We derived two security criteria (biggest cluster size and cluster diameter) for our assessment. It is shown that by changing the structure of power system, the security robustness of the data communication network will be varied. This study brightens the way for future layout development of combined data communication networks with different infrastructures.

In this article, we investigate the user access, i.e., the average number of times of a mobile user entrance, to a Wireless Local Area Network (WLAN) cell in a WLAN and third generation (3G) telecommunication coupled networkwhen an attack causes harm to its adjacent network. The adjacent network is a 3G network. The considered attack is a removal attack that makes a 3G cell, in an adjacent network, disabled to support its services. To do the study, regular Markov chain model is applied. This study shows the dependency of user access to the structure of its adjacent network.