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4) Variety of mobility levels of MOC devices and gateway

Some MOC devices and gateways are mobile and can be used everywhere. Some devices and
gateway do not move. Some MOC devices and gateways move only within a certain area. Some
MOC devices and gateways should not be moved once installed (their movement would mean theft
of these devices has taken place).
5) Remote management of MOC devices in varied and large deployments

Massively deployed MOC devices cover large areas, they exist for a long time and they may be
"moving", thus making it difficult for operators or MOC end users to manage all devices in the
field.
The remote management functionality of MOC devices (e.g., firmware updates) is particularly
important in such deployments.
6) Increased security threats from limited manual intervention

Some MOC devices and gateways are required to be managed remotely rather than operated
manually in the field. This increases the security threat level, such as physical tampering, hacking,
and unauthorized monitoring and so on. So adequate security measures should be provided to detect
or resist possible attacks.
7) Variety of data communication characteristics

Most MOC applications depend on data communications driven by machines without human
interventions. The characteristics of such data communications are much different from human
driven communications.

The variety of data communications is also caused by the variability of other factors, such as packet
size (small or large packets), data transmission periods and frequency or the MOC device
communication role (initiating party or terminating party).
8) Large amounts of data transmitted to the network

With more and more intelligence embedded in devices and the large number of devices connected
to the network, large amounts of data are transmitted to the network.

8 Service requirements of MOC applications

8.1 Mobility levels
Different types of MOC applications may require different levels of MOC device and/or gateway
mobility. This includes no mobility for devices and gateway that do not move, limited mobility for
devices and gateway that move infrequently (e.g., medical devices on a patient may not move
frequently), or low geographical mobility for devices and gateway that move only within a certain
region (e.g., bus equipment devices such as a camera may move only within a city). It is needed to
provide mobility management for different mobility levels in order to reduce resource usage
(e.g., the timer of periodic location update should be reduced for the MOC devices which have
infrequent movement).

Requirements of mobility levels are as follows:
1) MOC applications are required to be supported with optimized mobility management
according to the required levels of mobility.

8.2 Time controlled network communications
In order to minimize costs and optimize network efficiency, MOC devices or MOC gateways can
locally cache the collected data and transmit them to the network during the time slots allowed or
pre-configured by the network operator.

Rec. ITU-T Y.4109/Y.2061 (06/2012) 267