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Table 1 Use cases: traffic aspects and requirements

From: Optimisation of NB-IoT deployment for smart energy distribution networks

Use case Traffic aspects (UL = Uplink/DL = Downlink) Requirements
Meter reading (scheduled) 4–6 messages/residential meter/day; 1600–2400 bytes (UL) ≤ 4 h, ≥ 98%
12–24 messages/industrial meter/day; 200–1600 bytes (DL) ≤ 2 h, ≥ 98%
RTP 60/1000 meters: 1 message/day
100 bytes (DL) + 25 bytes (UL)
≤ 5 s, ≥ 99%
Service switch operation 1–50/1000 meters: 1 message/day
25 bytes (DL) + 25 bytes (UL)
≤ 1–2 min, ≥ 98%
ORM 1 message/meter/event
25 bytes (UL)
≤ 20 s, ≥ 30%a
Firmware updates 2×/meter/year
400–2000 kB (DL)
≤ 4 h, ≥ 98%
  1. aFor large outages. No reliability requirement is specified for small outages, nor is the distinction between what is a ‘large’ and what is a ‘small’ outage clearly defined [5]