A. N. Sandalov, R. V. Sorokin, N. A. Soukhareva, M.V. Lomonosov Moscow State University, Moscow, Russia
SYNCHROINFO JOURNAL. Volume 5, Number 4 (2019). P. 17-18.
Key parameters describing properties of Radio Ethernet channel at the packet level are the message delivery time and bit error rate. The difference between Radio Ethernet and Ethernet link is made basically in a random backoff of message transfer and the mechanism of the message retransmitting. Due to existing in Radio Ethernet the mechanism of repeated transfer the bit error arising at a physical level, as though “flows” in value of delivery time, as since distortion of a data segment in the channel provokes repeated transfer of this segment and hence increases delivery time. Restriction of interpacket intervals distribution function width, for streams lost-free, in 1200 mks also corresponds to absence of repeated transfers, and value 1200 mks turns out from the conservation law of an average interval of following, i.e. 600 mks “in one side” plus 600 mks “in another”.
Keywords: Radio Ethernet, Ethernet link.