DL - 4G Americas

8.4 MULTI‐RAT RELATED ENHANCEMENTS
8.4.1 MACHINE‐TYPE COMMUNICATION (MTC)
The scope of the second release of Network Improvements for Machine-Type Communication (NIMTC)
for Rel-11 has not been finalized. Considering the number of MTC features in the service requirements,
the feature work will have to be prioritized. The following MTC features may have higher priority going
forward:
� Time Controlled (network access is only allowed in certain time periods)
� Time Tolerant (improvements for a class of MTC devices that can delay transmitting data)
� MTC Group and Group-based features (improvements to allow grouping of devices e.g. for
authentication, QoS/bearer control or reduction of signaling)
� Small Data transmission (improvements for a class of MTC devices that transmits relatively small
pieces of data)
� MTC Monitoring (monitoring of MTC devices, e.g. their behavior or location)
� Low Mobility (improvements for a class of MTC devices that do not move frequently or at all)
8.4.1.1 TIME CONTROLLED, TIME TOLERANT
Time Controlled is a feature that is mainly intended for MTC devices that connect with the network only
within a defined time period. Time Tolerant is intended for MTC devices that can delay their data transfer.
While there are slight differences in the intention of these MTC devices, a single solution may fit the
needs of all these devices.
General approach considered to address the needs of such devices:
� MTC device communicates only within certain time periods (grant time intervals) and is not
allowed to communicate within certain other time periods (forbidden time intervals): Could be
configured in the subscription data
� Allows optimization of network resources and extends device’s battery lifetime
� Access outside grant time interval or during forbidden time interval could result in rejection or
different charging rates (i.e. MTC service provider has to pay extra fees)
8.4.1.2 MTC GROUP
MTC group is intended for use with MTC devices that can easily be grouped to enable optimization of
network resources. Group of devices could be defined by the network operator or based on agreements
between the service provider and the operator. It is defined at the time of subscription and is identified by
a Group ID; the Group ID is expected to be unique within the PLMN.
Currently it is assumed that devices that have the following characteristics could form a group:
� Have the same home PLMN
www.4gamericas.org February 2011 Page 88