Dear all, I am running some tests trying to simulate "hidden nodes" or "asymmetric links". Are there any rules that determine when a node is hidden from another node, under TOSSIM (tinyos 2.x) radio model? For example, is it the case that a link is hidden from another if their gains differ more than a fixed constant, or if the absolute value of the gain is bigger or smaller than a constant?
I thought that all nodes with gain bigger than -77dBM(CCA threshold value) would be out of range of the source node. For example, for the topology 0 1 -83 1 0 -85 I thought that 0 would not hear 1 and vice versa. However, in my results, I have been able to exchange communication packets between them! Also, if one node had very big gain, and the other node has a reasonably small one, they seem to be both out of range from each other! Are there some equations that I can use to calculate the asymmetric links, or a node's range given their gains? Many thanks, Eli -- Dr. Eleftheria Katsiri Lecturer in Computer Science Birkbeck College, University of London office: +44 (0) 207 631 6862 email: [EMAIL PROTECTED] web: www.dcs.bbk.ac.uk/~eli <http://www.dcs.bbk.ac.uk/%7Eeli> -- Dr. Eleftheria Katsiri Lecturer in Computer Science Birkbeck College, University of London office: +44 (0) 207 631 6862 email: [EMAIL PROTECTED] web: www.dcs.bbk.ac.uk/~eli <http://www.dcs.bbk.ac.uk/%7Eeli> -- Dr. Eleftheria Katsiri Lecturer in Computer Science Birkbeck College, University of London office: +44 (0) 207 631 6862 email: [EMAIL PROTECTED] web: www.dcs.bbk.ac.uk/~eli
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