8.120 Monitoring Event Information
29.2743GPP3GPP Evolved Packet System (EPS)Evolved General Packet Radio Service (GPRS) Tunnelling Protocol for Control plane (GTPv2-C)Release 18Stage 3TS
The Monitoring Event Information contains the monitoring event parameters that are necessary to transfer over the S3/S16/S10 interface.
The Monitoring Event Information is coded as depicted in Figure 8.120-1.
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Bits |
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Octets |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
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1 |
Type = 189 (decimal) |
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2 to 3 |
Length = n |
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4 |
Spare |
NSCF |
NSUI |
NSUR |
Instance |
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5 to 8 |
SCEF Reference ID |
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9 |
SCEF ID Length |
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10 to k |
SCEF ID |
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(k+1) to (k+2) |
Remaining Number of Reports |
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(k+3) to (n+4) |
These octet(s) is/are present only if explicitly specified |
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Figure 8.120-1: Monitoring Event Information
The SCEF Reference ID, the SCEF ID shall be encoded as specified in clause 8.4.4 and 8.4.5 of 3GPP TS 29.336 [69].
The SCEF ID Length indicates the length of the SCEF ID in octets.
The source MME/SGSN shall set the NSUR (Notify SCEF when UE becomes Reachable) flag to "1" to indicate that the target MME/SGSN shall send a notification to SCEF when the UE becomes reachable, if a monitoring event, with the Monitoring-Type is set to "AVAILABILITY_AFTER_DDN_FAILURE", or "UE_REACHABILITY_AND_IDLE_STATUS_INDICATION" or "AVAILABILITY_AFTER_DDN_FAILURE_AND_IDLE_STATUS_INDICATION" or "UE_REACHABILITY".
The source MME/SGSN shall set the NSUI (Notify SCEF when UE becomes Idle) flag to "1" to indicate that the target MME/SGSN shall send a notification to SCEF when the UE gets into idle mode, if a monitoring event, with the Monitoring-Type is set to "UE_REACHABILITY_AND_IDLE_STATUS_INDICATION" or "AVAILABILITY_AFTER_DDN_FAILURE_AND_IDLE_STATUS_INDICATION".
The source MME/SGSN shall set the NSCF (Notify SCEF about Communication Failure events) flag to "1" to indicate that the target MME/SGSN shall send a notification to the SCEF if it detects a communication failure event.
NOTE: This enables the target MME/SGSN to notify the SCEF about communication failure events that can happen with the target RAN (e.g. radio link failure during the handover execution) before the target MME/SGSN interacts with the HSS.
The Remaining Number of Reports indicates the number of reports which are outstanding to be sent to the SCEF. It shall be encoded as specified in clause 8.4.8 of 3GPP TS 29.336 [69].
8.121 ECGI List
MBMS Cell List is an extendable IE that is coded as depicted in Figure 8.120-1. The ECGI identity types are defined in 3GPP TS 23.003 [2].
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Bits |
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Octets |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
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1 |
Type = 190 (decimal) |
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2 to 3 |
Length = n |
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4 |
Spare |
Instance |
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5 to 6 |
Number of ECGI Fields = m |
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7 to (m*7+6) |
ECGI List of m ECGI Fields |
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(m*7+7) to (n+4) |
These octet(s) is/are present only if explicitly specified |
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Figure 8.121-1: ECGI List
The Number of ECGI Fields shall indicate the number of ECGI fields in the ECGI List.
In the present version of this specification, the Length n shall be set to m times 7 plus 2.
The ECGI List shall consist of m ECGI fields. Each ECGI field shall be encoded as specified in clause 8.21.5 and thus is 7 octets long.