5.2 UE radio bearer test mode procedures

34.1093GPPRelease 17Special conformance testing functionsTerminal logical test interfaceTS

5.2.1 Activate UE radio bearer test mode

Figure 5.2.1.1: Activate UE radio bearer test mode procedure

5.2.1.1 General

The SS uses the activate UE radio bearer procedure to get the UE into a test mode where: the SS can set up radio bearers to be terminated in the UE test loop function without having to involve CC or SM; and to disable any control mechanisms in NAS protocols (TC protocol excluded) or in any UE applications that otherwise could cause the RRC connection to be released.

5.2.1.2 Initiation

The SS can initiate the UE radio bearer test mode when an RRC connection is established.

The SS requests the UE to activate the UE radio bearer test mode by transmitting an ACTIVATE RB TEST MODE message. The SS then starts timer TT01.

5.2.1.3 Reception of ACTIVATE RB TEST MODE message by UE

When the UE receives the ACTIVATE RB TEST MODE message then the radio bearer test mode shall be activated.

When the radio bearer test mode is active the UE shall:

– accept any requested radio bearer setup within the radio access capabilities of the UE;

– terminate all user plane radio bearer(s) in the UE test loop function;

– discard all SDUs delivered by the RLC layer to the UE test loop function for a radio bearer without a closed test loop if the configuration of that radio bearer does not include the PDCP layer;

– discard all SDUs delivered by the PDCP layer to the UE test loop function for a radio bearer without a closed test loop if the configuration of that radio bearer includes the PDCP layer (configured by "PDCP info" (see [5]);

– disable any control mechanisms in NAS protocols or in any UE applications that otherwise could cause the RRC connection to be released; and

– optionally, if the UE supports CSG Proximity Indication, ignore any non 3GPP radio signals which are normally used in determining proximity to a CSG (closed subscriber group) cell and delete any previously stored cell information for proximity detection.

NOTE: The UE may provide other means which would guarantee that the UE ignores any non 3GPP radio signals which are normally used in determining proximity to a CSG (closed subscriber group) cell and deletes any previously stored cell information for proximity detection. For such UEs the above mentioned CSG requirements in UE test mode may not apply.

When the radio bearer test mode has been activated the UE shall transmit the ACTIVATE RB TEST MODE COMPLETE message.

NOTE: For UEs not supporting UE test loop mode 4 then the UE does not need to provide any CC or SM functionality while the radio bearer test mode is active. For testing of UE uplink packet filtering using UE test loop mode 4 then SM procedures are used by the SS to configure uplink packet filters. Thus for UEs supporting UE test loop mode 4 then the UE has to provide SM functionality while the radio bearer test mode is active.

5.2.1.4 Reception of ACTIVATE RB TEST MODE COMPLETE message by SS

Upon reception of the ACTIVATE RB TEST MODE COMPLETE message the SS stops timer TT01.

The reception of the ACTIVATE RB TEST MODE COMPLETE message by SS confirms that the UE radio bearer test mode has been activated in the UE.

5.2.1.5 TT01 timeout

If TT01 expires, then the SS shall indicate this to the test case. The procedure is then completed.

5.2.2 Deactivate UE radio bearer test mode

Figure 5.2.2.1: Deactivate UE radio bearer test mode procedure

5.2.2.1 General

The purpose of this procedure is to deactivate the radio bearer test mode and return UE to normal operation.

5.2.2.2 Initiation

The SS can deactivate the UE radio bearer test mode when an RRC connection is established and the UE radio bearer test mode is active.

The SS requests the UE to deactivate the UE radio bearer test mode by transmitting a DEACTIVATE RB TEST MODE message. The SS then starts timer TT01.

5.2.2.3 Reception of DEACTIVATE RB TEST MODE message by UE

When the UE receives DEACTIVATE RB TEST MODE message then the radio bearer test mode shall be deactivated and UE shall be returned to normal operation.

When the UE has deactivated the radio bearer test mode the UE shall transmit the DEACTIVATE RB TEST MODE COMPLETE message using the RRC UPLINK DIRECT TRANSFER message.

5.2.2.4 Reception of DEACTIVATE RB TEST MODE COMPLETE message by SS

Upon reception of the DEACTIVATE RB TEST MODE COMPLETE message the SS stops timer TT01.

The reception of DEACTIVATE RB TEST MODE COMPLETE message by SS confirms that the UE radio bearer test mode has been deactivated in the UE.

5.2.2.5 TT01 timeout

If TT01 expires, then the SS shall indicate this to the test case. The procedure is then completed.