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Stationary collectors reading wireless, battery powered smart meters, oftenoperate in harsh channel conditions to cut network installation cost to aminimum, challenging the individual link to each meter. The desired performancemeasure is reliable reception of at least some data from as many as possiblemeters, rather than increasing the fraction of received packets from one meter.As a first step for improving reliable reception, and motivated by the recentrevision of Wireless M-Bus, we propose the use of a deterministic packettransmission interval to group packets from the same meter. We derive theprobability of falsely pairing packets from different senders in the simplecase of no channel errors, and show through simulation and data from anexperimental deployment the probability of false pairing with channel errors.The pairing is an essential step towards recovery of metering data from as manyas possible meters under harsh channel conditions. From the experiment we findthat more than 15% of all conducted pairings are between two erroneous packets,which sets an upper bound on the number of additional meters that can bereliably recovered.

Reliable Reception of Wireless Metering Data with Protocol Coding