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Content for  TS 23.434  Word version:  18.6.0

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9.5  Procedures and information flows for Location management (Off-network) |R17|p. 91

9.5.1  Generalp. 91

Location information of VAL service user shall be provided by the location management client of one UE to the location management client of another UE. The location information reporting triggers are based on the location reporting configuration. Different type of location information can be provided e.g. retrieved from non-3GPP source.
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9.5.2  Information flows for off network location managementp. 91

9.5.2.1  Off-network location reporting trigger configurationp. 91

Table 9.5.2.1-1 describes the information flow from the location management client-1 to the location management client-2 for the off-network location reporting configuration.
Information Element Status Description
IdentityMIdentity of the VAL user to which the location reporting configuration is targeted or identity of the VAL UE.
Requested location informationMIdentifies what location information is requested
List of triggering criteria(s)MOne or more triggering criteria that identifies when the location management client will send the location report. Each triggering criteria is identified by trigger-id.
Minimum time between consecutive reportsODefaults to 0 if absent otherwise indicates the time interval between consecutive reports
Life Time of the configurationOTime till when location report configurations are valid.
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9.5.2.2  Off-network location reporting trigger configuration responsep. 92

Table 9.5.2.2-1 describes the information flow from the location management client-2 to the location management client-1 for the off-network location reporting configuration response. The Off-network location reporting trigger configuration response acts as an acknowledgement to the location management client-1.
Information Element Status Description
ResultMIndicates the success or failure for the operation
CauseOProvides reason for the failure.
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9.5.2.3  Off-network location management ackp. 92

The Off-network location management ack message is sent from the message receiver location management client-2 to message originator location management client-1.

9.5.2.4  Off-network location reportp. 92

Table 9.5.2.4-1 describes the information flow from the location management client-2 to the location management client-1 for the off-network location report.
Information Element Status Description
Triggering eventMIdentity of the event that triggered the sending of the report
Location InformationMLocation information shared by VAL client e.g. retrieved from non-3GPP source
Acknowledgement RequiredOIf present, indicate the recipient of the message to acknowledge the message.
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9.5.2.5  Off-network location reporting trigger cancelp. 92

Table 9.5.2.5-1 describes the information flow from the location management client-1 to the location management client-2 for the off-network location reporting trigger cancel.
Information Element Status Description
IdentityMIdentity of the VAL user to which the location reporting trigger cancel is targeted or identity of the VAL UE.
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9.5.2.6  Off-network location reporting trigger cancel responsep. 92

Table 9.5.2.6-1 describes the information flow from the location management client-2 to the location management client-1 for the off-network location reporting cancel response. The Off-network location reporting trigger cancel response acts as an acknowledgement to the location management client-1.
Information Element Status Description
ResultMIndicates the success or failure for the operation
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9.5.2.7  Off-network location requestp. 93

Table 9.5.2.7-1 describes the information flow from the location management client-1 to the location management client-2 for the off-network location request.
Information Element Status Description
IdentityMIdentity of the VAL user to which the location request is targeted or identity of the VAL UE.
Requested location informationMIdentifies what location information is requested
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9.5.2.8  Off-network location responsep. 93

Table 9.5.2.8-1 describes the information flow from the location management client-2 to the location management client-1 for the off-network location response. The Off-network location response acts as an acknowledgement to the location management client-1.
Information Element Status Description
ResultMIndicates the success or failure for the operation
Location InformationMLocation information shared by VAL client e.g. retrieved from non-3GPP source
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9.5.3  Event-triggered location reporting procedurep. 93

9.5.3.1  Location reporting trigger configurationp. 93

Figure 9.5.3.1-1 illustrates the procedure for configuring location reporting triggers from the location management client-1 residing in UE-1 to the location management client-2 residing in UE-2.
Pre-condition:
  • The UE-1 and UE-2 are within PC5 communication range of each other, and aware of Layer-2 ID of each other.
  • The VAL service user in UE-1 is authorized to configure location reporting trigger to the UE-2.
  • The VAL service user in UE-1 requests to configure location reporting triggers to the UE-2.
Reproduction of 3GPP TS 23.434, Fig. 9.5.3.1-1: Location reporting trigger configuration
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Step 1.
The location management client-1 in UE-1 sends off network location reporting trigger configuration message to the location management client-2 in UE-2 containing the initial location reporting event triggers configuration (or a subsequent update) for reporting the location of the VAL UE. The message includes information elements as specified in Table 9.5.2.1-1.
Step 2.
The location management client-2 stores the location reporting configuration, and sends off network location reporting trigger configuration response to the location management client-1. The message includes information elements as specified in Table 9.5.2.2-1.
Step 3.
Upon receiving the off network location reporting trigger configuration response message, the location management client-1 sends off-network location management ack messages. The message includes information elements as specified in clause 9.5.2.3.
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9.5.3.2  Location reportingp. 94

Figure 9.5.3.2-1 illustrates the procedure for sending off-network location report from the location management client-2 residing in UE-2 to the location management client-1 residing in UE-1.
Pre-condition:
  • The UE-1 and UE-2 are within PC5 communication range of each other, and aware of Layer-2 ID of each other.
  • The location management client-1 has previously configured off-network location reporting triggers to the location management client-2 as specified in clause 9.5.3.1.
Reproduction of 3GPP TS 23.434, Fig. 9.5.3.2-1: Location reporting
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Step 1.
The location management client-2 is monitoring the location reporting triggers and one of the event is triggered.
Step 2.
The location management client-2 sends the off-network location report message. The message includes information elements as specified in Table 9.5.2.4-1.
Step 3.
Upon receiving the off network location report message, the location management client-1 sends the off-network location management ack message if requested in the received message. The message includes information elements as specified in clause 9.5.2.3.
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9.5.3.3  Location reporting trigger cancelp. 94

Figure 9.5.3.3-1 illustrates the procedure for sending off-network location reporting trigger cancel from the location management client-1 residing in UE-1 to the location management client-2 residing in UE-2.
Pre-condition:
  • The UE-1 and UE-2 are within PC5 communication range of each other, and aware of Layer-2 ID of each other.
  • The location management client-1 has previously configured location reporting triggers to the location management client-2 as specified in clause 9.5.3.1.
Reproduction of 3GPP TS 23.434, Fig. 9.5.3.3-1: Location reporting trigger cancel
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Step 1.
The location management client-1 in UE-1 sends off network location reporting trigger cancel message to the location management client-2 in UE-2 to cancel the location reporting trigger configuration. The message includes information elements as specified in Table 9.5.2.5-1.
Step 2.
The location management client-2 clears the location reporting configuration, and sends off network location reporting trigger cancel response to the location management client-1. The message includes information elements as specified in Table 9.5.2.6-1.
Step 3.
Upon receiving the off network location reporting trigger configuration response message, the location management client-1 sends off-network location management ack message. The message includes information elements as specified in clause 9.5.2.3.
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9.5.4  On-demand location reporting procedurep. 95

Figure 9.5.4-1 illustrates the procedure for on-demand location report from the location management client-1 residing in UE-1 to the location management client-2 residing in UE-2.
Pre-condition:
  • The UE-1 and UE-2 are within PC5 communication range of each other, and aware of Layer-2 ID of each other.
  • The VAL service user in UE-1 is authorized to request location report from the UE-2.
  • The VAL service user in UE-1 requests immediate location reporting to the UE-2.
Reproduction of 3GPP TS 23.434, Fig. 9.5.4-1: Location reporting trigger cancel
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Step 1.
Based on configurations such as periodical location information timer the location management client-1 initiates the immediately request location information from the location management client-2. The location management client sends an off-network location request to the location management client-2. The message includes information elements as specified in Table 9.5.2.7-1.
Step 2.
VAL user or VAL UE is notified and asked about the permission to share its location. VAL user can accept or deny the request
Step 3.
The location management client-2 immediately responds to the location management client-1. If permission is received from the VAL user, the location management client-2 includes a report containing location information identified by the location management client-1 and available to the location management client-2. The message includes information elements as specified in Table 9.5.2.8-1.
Step 4.
Upon receiving the off network location reporting trigger configuration response message, the location management client-1 sends off-network location management ack message. The message includes information elements as specified in clause 9.5.2.3.
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