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Content for  TS 23.280  Word version:  19.2.0

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10.10.3  Ad hoc group emergency alert |R18|p. 233

10.10.3.1  Generalp. 233

The following subclauses specify the procedures for ad hoc group emergency alert initiation, ad hoc group emergency alert cancel, entering an ongoing ad hoc group emergency alert and leaving an ad hoc group emergency alert that are utilised by the following MC services:
  • MCPTT
  • MCVideo
  • MCData

10.10.3.2  Information flowsp. 233

10.10.3.2.1  Ad hoc group emergency alert request (MC service client - MC service server)p. 233
Table 10.10.3.2.1-1 describes the information flow ad hoc group emergency alert request from the MC service client to the MC service server.
Information element Status Description
MC service IDMThe identity of the alerting party.
Functional aliasOThe functional alias of the alerting party.
Ad hoc group ID (see NOTE)OThe group ID which is generated by the MC service user to be used for the ad hoc group alert.
Organization nameOThe alerting MC service user's mission critical organization name.
Location informationOThe alerting MC service client's location.
Criteria for determining the participantsMCarries the details of criteria or meaningful label identifying the criteria or the combination of both which will be used by the MC service server for determining the participants e.g., it can be a location-based criteria to invite participants in a particular area.
Additional informationOThe alerting party may provide additional information related to the alert, e.g., medical help needed or reason for the alert.
NOTE:
If this information element is not included, then the MC service server shall assign one to be used for the ad hoc group emergency alert and shall return it to the alerting party.
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10.10.3.2.2  Ad hoc group emergency alert request (MC service server - MC service client)p. 234
Table 10.10.3.2.2-1 describes the information flow ad hoc group emergency alert request from the MC service server to the MC service client.
Information element Status Description
MC service IDMThe identity of the alerting party
Functional aliasOThe functional alias of the alerting party
Ad hoc group IDMThe target group ID associated with the alert
Organization nameOThe alerting MC service user's mission critical organization name
Location informationOThe alerting MC service client's location
Additional informationOThe alerting party may provide additional information related to the alert, e.g., medical help needed or reason for the alert
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10.10.3.2.2a  Ad hoc group emergency alert request returnp. 234
Table 10.10.3.2.2a-1 describes the information flow ad hoc group emergency alert request return from the MC service server to the MC service client.
Information element Status Description
MC service IDMThe identity of the alerting party.
Functional aliasOThe functional alias of the alerting party.
Authorization resultMIndicate if authorization is success or failure.
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10.10.3.2.3  Ad hoc group emergency alert responsep. 235
Table 10.10.3.2.3-1 describes the information flow ad hoc group emergency alert response from the MC service client to the MC service server and from the MC service server to the MC service client.
Information element Status Description
MC service IDMThe identity of the target party
Functional aliasOThe functional alias of the target party
Ad hoc group IDMThe target group ID associated with the alert
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10.10.3.2.4  Ad hoc group emergency alert cancel requestp. 235
Table 10.10.3.2.4-1 describes the information flow ad hoc group emergency alert cancel request from the MC service client to the MC service server and from the MC service server to the MC service client.
Information element Status Description
MC service IDMMC service user identity of the cancelling party.
Functional aliasOThe functional alias of the cancelling party.
MC service ID (see NOTE)OMC service user identity whose emergency alert is requested to be cancelled.
Ad hoc group IDMThe ad hoc group ID with which the alert is associated
Group's in-progress emergency state cancel requestORequests cancellation of the in-progress emergency state of the group.
Additional informationOThe cancelling party may provide additional information related to cancelling the alert, e.g., technical issue resolved or medical help provided.
NOTE:
This information shall only be present if the message is requesting cancellation of another MC service user's alert. If not present, then the alert of the MC service ID of the cancelling party is being cancelled.
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10.10.3.2.4a  Ad hoc group emergency alert cancel request returnp. 235
Table 10.10.3.2.4a-1 describes the information flow ad hoc group emergency alert cancel request return from the MC service server to the MC service client.
Information element Status Description
MC service IDMThe identity of the cancelled party.
Functional aliasOThe functional alias of the cancelled party.
Authorization resultMIndicate if authorization is success or failure.
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10.10.3.2.5  Ad hoc group emergency alert cancel responsep. 236
Table 10.10.3.2.5-1 describes the information flow ad hoc group emergency alert cancel response from the MC service client to the MC service server and from the MC service server to the MC service client.
Information element Status Description
MC service IDMThe identity of the cancelled party
Functional aliasOThe functional alias of the cancelled party
Ad hoc group IDMThe ad hoc group ID associated with the alert
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10.10.3.2.6  Ad hoc group emergency alert participants list notificationp. 236
Table 10.10.3.2.6-1 describes the information flow ad hoc group emergency alert participants list notification from the MC service server to the MC service client.
Information element Status Description
MC service IDMThe identity of the notified participant.
Functional aliasOThe functional alias of the notified participant.
Ad hoc group IDMThe group ID associated with the ad hoc group emergency alert.
MC service user ID listOThe total list of MC service users who belong to the ad hoc group irrespective of having acknowledged the ad hoc group emergency alert or not.
MC service user ID listOThe list of MC service users who belong to the ad hoc group but have not acknowledged the ad hoc group emergency alert.
Criteria for determining the participantsOCarries the details of criteria or meaningful label identifying the criteria or the combination of both which may be used by the authorized users to modify it.
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10.10.3.2.7  Ad hoc group emergency alert get userlist requestp. 236
Table 10.10.3.2.7-1 describes the information flow of an ad hoc group emergency alert get userlist request sent from an MC service server at a primary MC system to another MC service server at a partner MC system.
Information element Status Description
Criteria for determining the participantsMCarries the details of criteria or meaningful label identifying the criteria or the combination of both which will be used by the MC service server for determining the participants, e.g., it can be a location-based criteria to invite participants in a particular area.
MC group IDMThe identity of the ad hoc group associated with the emergency alert.
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10.10.3.2.8  Ad hoc group emergency alert get userlist responsep. 237
Table 10.10.3.2.8-1 describes the information flow of an ad hoc group emergency alert get userlist response sent from an MC service server at a partner MC system to the MC service server at the primary MC system, whose MC service user has initiated the ad hoc group emergency alert.
Information element Status Description
MC service ID listMList of MC service IDs meeting the criteria specified in the ad hoc group emergency alert get userlist request.
MC group IDMThe identity of the ad hoc group associated with the emergency alert.
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10.10.3.2.9  Ad hoc group emergency alert user add notificationp. 237
Table 10.10.3.2.9-1 describes the information flow of an ad hoc group emergency alert user add notification sent from an MC service server at a partner MC system to the MC service server at the primary MC system, whose MC service user has initiated the ad hoc group emergency alert.
Information element Status Description
MC service IDMThe identity of an MC service client to be added to an ongoing ad hoc group emergency alert.
MC group IDMThe identity of the ad hoc group associated with the emergency alert.
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10.10.3.2.10  Ad hoc group emergency alert user remove notificationp. 237
Table 10.10.3.2.10-1 describes the information flow of an ad hoc group emergency alert user remove notification sent from an MC service server at a partner MC system to the MC service server at the primary MC system, whose MC service user has initiated the ad hoc group emergency alert.
Information element Status Description
MC service IDMThe identity of an MC service client to be removed from an ongoing ad hoc group emergency alert.
MC group IDMThe identity of the ad hoc group associated with the emergency alert.
Up
10.10.3.2.11  Ad hoc group emergency alert notifyp. 238
Table 10.10.3.2.11-1 describes the information flow for an ad hoc group emergency alert notify sent from MC service server to MC service client.
Information element Status Description
MC service IDMThe identity of the MC service client participating in the ad hoc group emergency alert.
Functional aliasOThe associated functional alias of the MC service user of the ad hoc group emergency alert participant.
MC group IDMThe ad hoc MC group ID associated with the emergency alert.
MC service ID listOThe list of the invited MC service users who acknowledge the ad hoc group emergency alert request, when MC service users join or leave the ad hoc group emergency alert. Or the list of the participating MC service users in the terminated ad hoc group emergency alert.
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10.10.3.2.12  Ad hoc group emergency alert modify request |R19|p. 238
Table 10.10.3.2.12-1 describes the information flow ad hoc group emergency alert modify request from the MC service client to the MC service server and from the MC service server to the MC service server.
Information element Status Description
MC service IDMThe identity of the requesting MC service user who is authorised to modify the ad hoc group criteria.
Functional aliasOThe functional alias of the requesting MC service user who is authorized to modify the ad hoc group criteria.
Ad hoc group IDMThe group ID used for the ad hoc group alert.
Location informationOThe requesting MC service client's location.
Criteria to determine the list of participantsMCarries the details of criteria or meaningful label identifying the criteria or the combination of both which will be used by the MC service server for determining the participants e.g., it can be a location-based criteria to invite participants in a particular area.
Additional informationOThe requesting party may provide additional information related to the alert, e.g., medical help needed or reason for the alert.
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10.10.3.2.12a  Ad hoc group emergency alert modify request return |R19|p. 239
Table 10.10.3.2.12a-1 describes the information flow ad hoc group emergency alert modify request return from the MC service server to the MC service client.
Information element Status Description
MC service IDMThe identity of the requesting MC service user.
Functional aliasOThe functional alias of the requesting MC service user.
Authorization resultMIndicate if authorization is success or failure.
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10.10.3.2.13  Ad hoc group emergency alert modify response |R19|p. 239
Table 10.10.3.2.13-1 describes the information flow ad hoc group emergency alert modify response from the MC service server to the MC service client and from the MC service server to the MC service server.
Information element Status Description
MC service IDMThe identity of the requesting MC service user who is authorised to modify the ad hoc group criteria.
Functional aliasOThe functional alias of the requesting MC service user who is authorised to modify the ad hoc group criteria.
MC service server Ad hoc group IDMThe MC service server group ID of the ad hoc group whose criterion for determining the participants is modified.
ResultMIndicates the success or failure for the result.
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