Model for polling in noisy multihop systems with application to PLC and AMR

The present paper presents a Markov Chain model of polling in noisy multi-hop systems typical of Power Line Communications (PLC) as well as of other systems. The model includes the transmission of a Backwards Error Indication Packet (BEIP) to the master when the transmission is blocked in one of the downstream hops as well as the possibility to reduce the global time-out value below that strictly necessary to avoid having two simultaneous polls within the system. Two Case Studies are presented; the OPERA PLC access broadband specification and a narrow band PLC based Automatic Meter Reading (AMR) system. Explicit formulas for the delay in these systems and curves representing the behavior of the studied cases are given.

• Type: Conference
• Year: 2008
• Where: ISCC
• Authors: Joseph M. Selga, Agustín Zaballos, Jaume Abella, Guiomar Corral
• Keywords: Backwards Error Indication, Communications, ISCC 2008, Markov Chain Model, Noisy Multi-hop Systems