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Big data - Concept and application for telecommunications 5

Not all data fields of IoT data received by the IoT application server from devices, gateways, IoT platforms or
other IoT application servers may be needed. The IoT application server is required to compress received IoT
data (e.g., lossy compression by removing data fields which are not needed by the IoT application server).
Data received by the IoT application server from devices, gateways, IoT platforms or other IoT application
servers may have an inappropriate data format for data analysis. The IoT application server is required to
transform a received data format for efficient data analysis.

7.6.3 Data storage

The IoT application server is required to have the ability to store IoT data temporarily and/or permanently.
Before pre-processing, IoT data received by the IoT application server from devices, gateways, IoT platforms
or other IoT application servers are recommended to be stored temporarily and locally.
Data concerning analysis results are required to be stored permanently. IoT data stored permanently can be
stored locally or remotely.
7.6.4 Data transfer

The IoT application server is required to support application specific data transfer requirements including for,
but not limited to, latency, reliability, bandwidth and connectivity.
7.6.5 Data analysis

The IoT application server is required to have the ability to analyse IoT data according to dedicated algorithms
and customized profiles. For example, e-health monitoring (EHM) application servers should be able to
process EHM IoT data according to specific medical algorithms and specific profiles configured by doctors.

The IoT application server is recommended to have the ability to execute distributed data analysis. In case of
complex data analysis, the IoT application server should be able to make usage of resources from an IoT
platform and other IoT application servers.

7.6.6 Data visualization
The IoT application server is required to have the ability to show results of data analysis according to a
consumer's customized needs.
Personal identity and other privacy sensitive information are required to be protected.

7.6.7 Data query
The IoT application server is required to support data query on the IoT data related to its provided
applications.
The IoT application server is recommended to support semantic data query on the IoT data related to its
applications.
The IoT application server is required to support data query with access control enabling query scope
restriction.

8 Capabilities of the IoT for big data

This clause complements the functional framework of the IoT [ITU-T Y.2068] in terms of the specific
capabilities that the IoT is expected to support in order to address the challenges related to big data.

8.1 Overview

Nine capabilities are identified based on the requirements provided in clause 7, some capabilities are
deduced from corresponding requirements and others from analysis of multiple requirements:
– Big data collection
– Big data pre-processing

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