Page 216 - Big data - Concept and application for telecommunications

5 Big data - Concept and application for telecommunications

Figure 3 – IoT data operations

In Figure 3, the boxes represent the IoT data operations and the arrows represent the data flows with
associated directionality. The circle, cross point of the data flows, is merely intended to represent the fact
that there is no unique logical sequencing of the various IoT data operations.
In particular, for the operation of data collection, a unidirectional data flow is shown since this data flow can
only be from data collection to other operations; similarly, for the operation of data visualization, the data
flow can only be from other operations to data visualization, so it is also shown as unidirectional data flow;
for the other IoT data operations, bi-directional data flows are used to describe their possible data flows.

NOTE 1 – The sequencing of IoT data operations in IoT depends greatly on the service and deployment
scenarios. Cloud computing and edge computing are two technologies that may be implemented in the IoT
for support of different IoT data operation sequences: e.g., cloud computing can be used to perform data
analysis after the data are transferred to the remote IoT platform, while edge computing can be used to
perform data analysis locally such as at the gateway.
NOTE 2 – Detailed information concerning relationships between IoT data roles and IoT data operations is
provided in Appendix II.2.
NOTE 3 – Detailed information concerning relationships between IoT data operations and IoT components
are described in Appendix II.3.

7.1.1 Data collection
Data collection is the data operation related to measurement processes and/or data information gathering
from components of IoT.
NOTE – Data collected by an IoT platform directly from sensors and data collected by an IoT platform via a
gateway can be seen as two typical examples of data collection scenarios.
7.1.2 Data transfer

Data transfer is the IoT data operation related to the physical transfer of IoT data between components of
IoT as well as between the IoT system and external systems.
7.1.3 Data storage

Data storage is the IoT data operation related to the physical storage of IoT data.
NOTE – The data storage local to an edge IoT component such as a gateway and/or device and the remote
data storage in a core IoT component such as an IoT platform and IoT application server (e.g., cloud based
storage) can be seen as two typical examples of the data storage scenarios.

7.1.4 Data pre-processing
Data pre-processing is the IoT data operation on the IoT data aiming to ensure and/or enhance the quality
or efficiency of other IoT data operations.

208 Network and infrastructure