4.2 Typical use of the MCPTT Service

22.1793GPPMission Critical Push to Talk (MCPTT) over LTERelease 17Stage 1TS

NOTE: Even though this subclause is written from an organization specific perspective the text is illustrative for typical use of MCPTT Services by all MCPTT Users.

Public safety workers often operate in groups and perform different tasks during the day/week. Many tasks and operations are controlled, assisted and/or coordinated by a dispatcher.

For their communications public safety workers are organized in groups. People that are working together communicate in the same MCPTT Group, the group communication helping them to coordinate quickly.

People with different tasks often communicate in separate MCPTT Groups.

Many of the public safety tasks are routine tasks, that are handled by standard procedures and communication structures, using dedicated MCPTT Groups. Communication structures and MCPTT Groups are also prepared for the handling of large incidents and control of large events. Similarly there are MCPTT Groups and procedures for coordination with public safety workers from other organizations and/or other countries.

The standard procedures and communication structures help the public safety workers to do their work successfully. This results in a long list of (>100) MCPTT Groups available to a public safety worker, from which the correct one is selected depending on the task. To help the public safety worker to quickly find and select the correct MCPTT Group for the task, the MCPTT Groups in the radio are often structured in folders and/or accessible via key-shortcuts. In addition to pre-established MCPTT Groups that users select, there are also provisions in MCPTT systems to merge MCPTT Groups and to select on behalf of a user which group they should be using and for a dispatcher to push them onto it. The large number of MCPTT Groups provisioned on devices is helpful for the device to be able to operate on the network and off the network. However the ability to provision over the air is also seen as a very useful feature, as currently Land Mobile Radio devices often have to be locally re-programmed, rather than updated over the air.