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Content for  TS 22.179  Word version:  19.3.0

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5.7  MCPTT priority requirementsp. 28

5.7.1  Overviewp. 28

MCPTT Emergency Group Call and MCPTT Imminent Peril group call are MCPTT Group Calls that provide the MCPTT User elevated priority towards obtaining resources of the MCPTT system. The MCPTT Emergency Private Call similarly provides elevated priority to resources of the MCPTT system. The MCPTT Emergency Alert provides a notification of an MCPTT Emergency situation from an MCPTT UE, regardless if the user is signed in with the MCPTT Service or not.
The MCPTT Emergency Alert is initiated from an MCPTT UE to inform the MCPTT Service of the user's immediate need of assistance due to the user's personal, life-threatening situation. If the user is not properly authenticated, he is treated as a temporary MCPTT User with limited permissions. The user initiates this notification by actuating a user interface on the MCPTT UE. The notification to the MCPTT Service includes the MCPTT User's ID, potentially an MCPTT Group ID, the user's Mission Critical Organization name and the most current location available for the user's MCPTT UE.
The user profile/group configuration determines which MCPTT Group ID is used, if any. If the user profile indicates that a dedicated (i.e., not used for everyday traffic) MCPTT Emergency Group is to be used, then the MCPTT Emergency call traffic moves to a different group. MCPTT Users that support MCPTT Emergency situations are required to monitor the dedicated MCPTT Emergency Group(s) for call activity. If the user profile indicates that the selected (i.e., currently active) MCPTT Group is to be used, then its Group ID is used, unless no group is selected.
After the MCPTT User has initiated an MCPTT Emergency Alert, MCPTT Emergency Private Call or MCPTT Emergency Group Call, the MCPTT User is considered to be in the MCPTT Emergency State. The user remains in the MCPTT Emergency State until the MCPTT User cancels the MCPTT Emergency State.
An MCPTT Group Call started by an MCPTT User while in the MCPTT Emergency State or previously started but followed by an MCPTT Emergency Alert becomes an MCPTT Emergency Group Call. The MCPTT Group ID used for the MCPTT Emergency Group Call is the same MCPTT Group ID included in the MCPTT Emergency Alert. An MCPTT User or dispatcher might initiate an MCPTT Emergency Group Call without an MCPTT Emergency Alert. The start of an MCPTT Emergency Group Call starts an In-progress Emergency condition for the MCPTT Group. Any subsequent MCPTT Group Call made by any MCPTT Group Member of an MCPTT Group which has an In-progress Emergency is treated as an MCPTT Emergency Group Call. MCPTT Emergency Group priority is removed when the In-progress Emergency for the group is cancelled.
An MCPTT Private Call started by an MCPTT User while in the MCPTT Emergency State becomes an MCPTT Emergency Private Call.
MCPTT Imminent Peril group call is differentiated from MCPTT Emergency Group Call based on for whom the assistance is required. The MCPTT Emergency Group Call is initiated by an MCPTT User for assistance for the MCPTT Emergency condition involving that user. The MCPTT Imminent Peril group call is initiated by an MCPTT User for assistance to other MCPTT Users or persons of the general public observed to be in trouble and may soon need assistance.
There is no MCPTT Imminent Peril Alert and no MCPTT Imminent Peril State for MCPTT Users. The granting of an MCPTT Imminent Peril group call starts an In-progress Imminent Peril condition for the MCPTT Group. Any subsequent MCPTT Group Call made by any MCPTT Group Member of an MCPTT Group which has an In-progress Imminent Peril condition is treated as an MCPTT Imminent Peril group call. MCPTT Imminent Peril Group priority is removed when the In-progress Imminent Peril for the group is cancelled.
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5.7.2  Call types based on prioritiesp. 28

5.7.2.1  MCPTT Emergency Group Callp. 28

5.7.2.1.1  MCPTT Emergency Group Call requirementsp. 28
[R-5.7.2.1.1-001]
Void
[R-5.7.2.1.1-002]
Void
[R-5.7.2.1.1-003]
Void
[R-5.7.2.1.1-004]
Void
[R-5.7.2.1.1-005]
Void
[R-5.7.2.1.1-006]
Void
[R-5.7.2.1.1-007]
Void
[R-5.7.2.1.1-008]
Void
[R-5.7.2.1.1-009]
Void
[R-5.7.2.1.1-010]
Void
[R-5.7.2.1.1-011]
Void
[R-5.7.2.1.1-012]
Void
[R-5.7.2.1.1-013]
Void
[R-5.7.2.1.1-014]
Void
5.7.2.1.2  MCPTT Emergency Group Call cancellation requirementsp. 29
[R-5.7.2.1.2-001]
Void
[R-5.7.2.1.2-002]
Void
[R-5.7.2.1.2-003]
Void
[R-5.7.2.1.2-004]
Void
[R-5.7.2.1.2-005]
Void

5.7.2.2  Imminent Peril group callp. 29

5.7.2.2.1  Imminent Peril group call requirementsp. 29
[R-5.7.2.2.1-001]
Void
[R-5.7.2.2.1-002]
Void
[R-5.7.2.2.1-003]
Void
[R-5.7.2.2.1-004]
Void
[R-5.7.2.2.1-005]
Void
[R-5.7.2.2.1-006]
Void
[R-5.7.2.2.1-007]
Void
[R-5.7.2.2.1-008]
Void
[R-5.7.2.2.1-009]
Void
5.7.2.2.2  Imminent Peril group call cancellation requirementsp. 29
[R-5.7.2.2.2-001]
Void
[R-5.7.2.2.2-002]
Void
[R-5.7.2.2.2-003]
Void
[R-5.7.2.2.2-004]
Void

5.7.2.3  MCPTT Emergency Private Call (with Floor control)p. 30

5.7.2.3.1  MCPTT Emergency Private Call (with Floor control) requirementsp. 30
[R-5.7.2.3.1-001]
The MCPTT Service shall support MCPTT Emergency Private Calls (with Floor control) from authorized MCPTT Users.
[R-5.7.2.3.1-002]
When an MCPTT User initiates an MCPTT Emergency Private Call (with Floor control) this may trigger an MCPTT Emergency Alert for that MCPTT User.
[R-5.7.2.3.1-003]
When an MCPTT User initiates an MCPTT Emergency Private Call (with Floor control) this shall put that MCPTT User into an MCPTT Emergency State.
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5.7.2.3.2  MCPTT Emergency Private Call (with Floor control) cancellation requirementsp. 30
[R-5.7.2.3.2-001]
The MCPTT Service shall support cancellation of the MCPTT Emergency priority of an MCPTT Emergency Private Call (with Floor control) by an authorized MCPTT User.
[R-5.7.2.3.2-002]
The MCPTT Service shall support cancellation of the MCPTT Emergency priority of an MCPTT Emergency Private Call (with Floor control) when criteria established by the MCPTT Administrator are met (e.g., timeout).
[R-5.7.2.3.2-003]
The MCPTT Service shall support an MCPTT User cancelling their own MCPTT Emergency State.

5.7.2.4  MCPTT Emergency Alertp. 30

5.7.2.4.1  MCPTT Emergency Alert requirementsp. 30
[R-5.7.2.4.1-001]
Void
[R-5.7.2.4.1-002]
Void
[R-5.7.2.4.1-003]
Void
[R-5.7.2.4.1-004]
Void
[R-5.7.2.4.1-005]
Void
[R-5.7.2.4.1-006]
Void
[R-5.7.2.4.1-007]
Void
[R-5.7.2.4.1-008]
Void
[R-5.7.2.4.1-009]
Void
[R-5.7.2.4.1-010]
Void
[R-5.7.2.4.1-011]
Void
[R-5.7.2.4.1-012]
Void
5.7.2.4.2  MCPTT Emergency Alert cancellation requirementsp. 30
[R-5.7.2.4.2-001]
Void
[R-5.7.2.4.2-002]
Void
[R-5.7.2.4.2-003]
Void

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