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� Subscribed for same or similar applications regarding QoS/Policy rules and general traffic<br />
characteristics (e.g. amount of data exchanged, data sent only at certain times)<br />
Grouping of devices could affect the way these devices authenticate towards the network, are attached or<br />
detached and how bearers and what kind of bearers are maintained.<br />
8.4.1.3 SMALL DATA TRANSMISSION<br />
This feature is intended for use with MTC devices that need to transmit and receive only small amount of<br />
data. Sending small amount of data in the attach request (or another NAS signaling message) without the<br />
need to establish bearer contexts is under consideration.<br />
8.4.1.4 MTC MONITORING<br />
This is intended for use with monitoring MTC device related events; mainly to address the needs of<br />
devices deployed in locations with high risk of vandalism or theft.<br />
Following are sample monitoring events:<br />
� Device behavior not aligned with the activated MTC feature(s) (e.g. device is transmitting data<br />
outside the allowed time period or a low mobility device moving very frequently)<br />
� Change in point of attachment (PoA) (e.g. a gas meter is removed)<br />
� Change of association between UE and UICC (e.g. UICC is stolen)<br />
� Loss of connectivity to the network<br />
MTC service provider and network operator could define the type of events that should be detected and<br />
the action that should be taken by the network. Such agreements are usually fixed in Service Level<br />
Agreements (SLAs).<br />
8.4.1.5 LOW MOBILITY<br />
This is intended for use with MTC Devices that do not move, move infrequently or move only within a<br />
certain region or area; for instance, meters (power, gas, water, heating, grid control), surveillance systems<br />
are mostly placed in a fixed location.<br />
Following are some of the potential approaches considered to address the needs of such devices:<br />
� (Limited) Paging area configured in the subscription data and the network pages in the configured<br />
area<br />
� Stepwise paging: Network first pages the last known cell or service area and if there is no<br />
response, it pages within the whole RA or TA list<br />
Network detects the lack of or rare mobility hence decides to store the last known location for subsequent<br />
paging.<br />
www.4gamericas.org February 2011 Page 89
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