Page 686 - Unleashing the potenti al of the Internet of Things

5 Unleashing the potential of the Internet of Things

8.5.3 Data collection time provision

According to the capability requirements described in clause 9.5.4 of [ITU-T Y.2065] , the EHM
capabilities on the device layer of the EHM terminal and EHM gateway are recommended to support
data collection time provision, so that the collected EHM data can be marked with the collection time.

This capability includes:
1) Time calibration
The time calibration capability is used to obtain time parameters from the SSAS layer and
calibrate the built-in time clock of EHM devices.

2) Time provision
The time provision capability is used to provide calibrated collection time along with the
collected EHM data.

8.5.4 Device-based locating
According to the capability requirements described in clause 9.5.5 of [ITU-T Y.2065], the EHM
capabilities on the device layer of the EHM terminal and EHM gateway are recommended to support
device-based locating capability.
NOTE – Different techniques (e.g., GPS, gyroscope and motion state sensor) can be used to get the position
of EHM terminals or EHM gateways.
It is recommended that location accuracy be indicated along with the location information.

8.5.5 Gateway
According to the capability requirements described in clause 9.5.2 of [ITU-T Y.2065], the device
layer of the EHM gateway is required to provide gateway capabilities [ITU-T Y.2067] for connected
EHM end points or EHM terminals, e.g., network adaptation capability and raw data processing
capability.

8.6 Management capabilities of EHM components
According to the capability requirements described in clause 9.6 of [ITU-T Y.2065], the EHM
components are required to support the following management capabilities:
1) fault management
The EHM gateway and IoT platform are required to recognize, isolate, correct and log faults.
The EHM end point, EHM terminal and EHM application server are required to recognize,
correct and log faults.
2) configuration management
The EHM terminal and EHM end point are required to be able to be configured remotely.
The IoT platform and EHM application server are required to support remote device
configuration. The EHM gateway is required to be able to configure the connected EHM end
points according to configuration requests from the IoT platform or EHM application server.
3) initialization and registration management
The EHM terminal is required to support initialization set-up and registration capability. The
EHM end point is required to complete the initialization set-up and registration procedure by
itself or with the help of the EHM gateway. The EHM gateway is required to support the
initialization set-up and registration capability to help EHM end points, where necessary, in
order to complete the initialization set-up and registration.

672 Rec. ITU-T Y.4408/Y.2075 (09/2015)