Page 119 - 2015 Security in Telecommunications and Information Technology

Unleashing the potential of the Internet of Things 3

– Storage
A gateway has two methods to store data. The first is temporary storage, in this case the
data which are temporarily stored need to be removed according to pre-defined policies,
e.g., service logic, maximum data storage volume. The second data storage method is
permanent storage, in this case the data which are permanently stored are important for
successful service operations and for correct gateway and device operations.
For data safety and security, the data stored in gateways and applications should be kept
consistent.
The storage requirements and recommendations of the gateway are as follows:

1) The gateway is required to support local storage, including temporary and permanent
storage.

2) The gateway is recommended to support capabilities for ensuring data consistency
between the gateway and applications.
NOTE – Applications are expected to support capabilities for ensuring data consistency with
gateways.
– Device grouping
Devices may be grouped by type, location, etc. For example, all devices in the same room
can constitute a group. Likewise the devices of the same type behind a gateway can
constitute a group. A gateway can operate devices efficiently based on groups. The gateway
is required to support group operations for devices, including operations to create, update,
read and delete groups of devices.

– Data capture and aggregation
A gateway captures data from devices and transfers the data to applications. A gateway
may have multiple modes of capturing and aggregating data based on policies.
The data capture and aggregation requirements of the gateway are as follows:
1) The gateway is required to support data capture from devices based on policies, e.g.,
real time collection or time schedule-based collection.
2) The gateway is recommended to support aggregation of data from devices.
– Data dispatching and delivery
For a large number of devices behind a gateway, the gateway can efficiently dispatch and
transfer data between devices and applications based on policies.
The data dispatching and delivery requirements and recommendations of the gateway are as
follows:
1) The gateway is required to support mechanisms to dispatch data based on policies.
2) The gateway is recommended to support mechanisms to pre-process data based on
policies before dispatching them.
3) The gateway is required to support data delivery based on QoS requirements of
applications.
4) The gateway is required to support data delivery based on devices' group identification
if devices are grouped.

8.4 Application related requirements

– Application logic integration
The gateway is recommended to support application logic integration.

Rec. ITU-T Y.4101/Y.2067 (06/2014) 105