3GPP TSG GERAN#65 Tdoc GP-150049
Shanghai, P.R. China Agenda item 7.1.5.3.5
10
th
– 12
th
March, 2015
Source: Ericsson
1(4)
On the definition of system capacity for CIoT
1 Introduction
At GERAN#62 a new feasibility study named Cellular System Support for Ultra Low
Complexity and Low Throughput Internet of Things (WI code: FS_IoT_LC) was approved, see
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In this paper, the sourcing company analyzes the system capacity results for NB M2M
presented in [3] with the intention to initiate a discussion on the targeted reliability of
message delivery for Cellular IoT.
2 Discussion
System capacity simulation results from [3] are shown by the blue and magenta curves in
Figure 1 (with and without IP header compression, respectively). It should be noted that the
simulation results have been read visually from plots in [3] and may therefore have minor
discrepancies.
The red vertical line shows the target number of MS per sector according to the TR in [2].
In Figure 1 the requested traffic is also shown as a black dashed line. This line corresponds
to the number of reports that the devices requested to send. It has been calculated
according to the agreed traffic models in [2] (also described in sections 3 and 4 of [3]).
