Page 218 - Big data - Concept and application for telecommunications

5 Big data - Concept and application for telecommunications

7.2.5 Data transfer

The device is recommended to provide other IoT components with transfer configuration parameters for
sensed IoT data in order to apply required network resources (e.g., data buffer and network QoS) for data
transfer quality support.

7.2.6 Data visualization
The device is recommended to show the sensed IoT data according to application requirements, e.g., in real
time.

7.3 Requirements of the gateway for big data

7.3.1 Data collection
The gateway is required to efficiently collect the sensing IoT data or monitoring IoT data from connected
devices. For example, the gateway can arrange the collection period for each connected device according to
application or network requirements to avoid large amount of useless IoT data being frequently collected.
7.3.2 Data pre-processing

The gateway is recommended to pre-process the collected IoT data to verify and improve their quality. For
example, some inaccurate sensing IoT data collected from one connected device can be detected by the
gateway via comparing with the sensing IoT data from other similar connected devices.

The gateway is recommended to associate a time stamp to collected IoT data if there is no associated time
stamp from connected devices.

The gateway is recommended to associate a semantic description to collected IoT data if there is no
associated semantic description from connected devices.

The gateway is recommended to have the ability to perform local operations, e.g., in case the collected IoT
data is not required by other remote components of the IoT system.

7.3.3 Data storage

The gateway is recommended to support data storage for the collected IoT data and operation log files.
NOTE – The size of data storage depends on the application requirements. The data storage of a gateway can
be based on a local disk or based on cloud storage.
7.3.4 Data transfer

The gateway is recommended to aggregate the collected IoT data for transfer in order to reduce the transfer
overhead.
NOTE 1 – Aggregation is particularly beneficial in cases where the destination of the IoT data is the same.

The gateway is recommended to provide buffer mechanisms for transfer in order to ease transfer pressure
on the network.

NOTE 2 – If the network is busy, the gateway can buffer IoT data within a tolerable time before transmission.
The gateway is recommended to compress IoT data before transfer in order to reduce the transfer load.

7.3.5 Data analysis
The gateway is recommended to have the ability to perform data analysis on its collected data. For example,
these results can be then sent to local applications according to their requests so that the latency can be
reduced compared with performing the data analysis on the remote IoT platform.
NOTE – The gateway data analysis capability can be used to support edge computing.

7.4 Requirements of the network for big data

General network requirements of the IoT can be found in [ITU-T Y.4100].

210 Network and infrastructure