4.9.28 Test procedure for removing video from an ongoing call in 5GC
38.508-13GPP5GSPart 1: Common test environmentRelease 17TSUser Equipment (UE) conformance specification
4.9.28.1 Scope
The purpose of this procedure is to remove video from an established speech call.
4.9.28.2 Procedure description
4.9.28.2.1 Initial conditions
System Simulator:
– 1 NR Cell connected to 5GC, default parameters.
User Equipment:
– The UE is in state 3N-A and registered to the IMS.
4.9.28.2.2 Procedure sequence
Table 4.9.28.2.2-1: IMS video removal from established call in 5GC
|
St |
Procedure |
Message Sequence |
TP |
Verdict |
|
|
U – S |
Message |
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|
1 |
The SS transmits an RRCReconfiguration message and a PDU SESSION MODIFICATION COMMAND message. |
<– |
NR RRC: RRCReconfiguration |
– |
– |
|
– |
EXCEPTION: Steps 2 and 3 can occur in any order. |
– |
– |
– |
– |
|
2 |
The UE transmits an RRCReconfigurationComplete message |
–> |
NR RRC: RRCReconfigurationComplete |
– |
– |
|
3 |
Check: Does the UE transmit a ULInformationTransfer message, an UL NAS TRANSPORT message and an PDU SESSION MODIFICATION COMPLETE message? |
–> |
NR RRC: ULInformationTransfer 5GMM: UL NAS TRANSPORT 5GSM: PDU SESSION MODIFICATION COMPLETE |
– |
– |
4.9.28.3 Specific message contents
Table 4.9.28.2.3-1: RRCReconfiguration (step 1, Table 4.9.28.2.2-1)
|
Derivation Path: Table 4.6.1-13. |
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|
Information Element |
Value/remark |
Comment |
Condition |
|
|
RRCReconfiguration ::= SEQUENCE { |
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|
criticalExtensions CHOICE { |
||||
|
rrcReconfiguration SEQUENCE { |
||||
|
radioBearerConfig SEQUENCE { |
||||
|
drb-ToReleaseList SEQUENCE (SIZE (1..maxDRB)) OF DRB-Identity { |
1 entry |
|||
|
DRB-Identity[1] |
DRB-Identity linked to the IMS video bearer |
entry 1 |
||
|
} |
||||
|
} |
||||
|
nonCriticalExtension SEQUENCE { |
||||
|
masterCellGroup SEQUENCE { |
||||
|
rlc-BearerToReleaseList SEQUENCE (SIZE (1..maxLC-ID)) OF LogicalChannelIdentity { |
1 entry |
|||
|
LogicalChannelIdentity[1] |
Same value as drb-Identity[1] above |
entry 1 |
||
|
} |
||||
|
} |
||||
|
} |
||||
|
} |
||||
|
} |
||||
|
} |
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Table 4.9.28.2.3-2: PDU SESSION MODIFICATION COMMAND (step 1, Table 4.9.28.2.2-1)
|
Derivation Path: Table 4.7.2-9. |
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|
Information Element |
Value/remark |
Comment |
Condition |
|||||
|
PDU session ID |
Same value as sent in PDU SESSION ESTABLISHMENT REQUEST message. |
|||||||
|
Authorized QoS rules |
||||||||
|
QoS rule[1] |
||||||||
|
QoS rule identifier |
‘00000100’B |
QoS rule 7 |
||||||
|
Rule operation code |
‘010’B |
Delete existing QoS rule |
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|
Authorized QoS flow descriptions |
||||||||
|
QoS flow descriptions[1] |
||||||||
|
QFI |
’00001000’B |
QFI 8 |
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|
Operation code |
‘010’B |
Delete existing QoS flow |
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