T5051

Validity timer value for UE policies for 5G ProSe direct discovery over PC5 (see clause 5.2), which is specified in 3GPP TS 24.555 [17] clause 5.3.

Start using the new UE policies for 5G ProSe direct discovery received in MANAGE UE POLICY COMMAND message

Stop using the old UE policies for 5G ProSe direct discovery

Initiate the UE-requested ProSeP provisioning procedure

(NOTE 1)

T5052

Validity timer value for UE policies for 5G ProSe direct communication over PC5 (see clause 5.2), which is specified in 3GPP TS 24.555 [17] clause 5.4.

Start using the new UE policies for 5G ProSe direct communications received in MANAGE UE POLICY COMMAND message

Stop using the old UE policies for 5G ProSe direct communications

Initiate the UE-requested ProSeP provisioning procedure

(NOTE 1)

T5053

Validity timer value for UE policies for 5G ProSe UE-to-network relay UE (see clause 5.2), which is specified in 3GPP TS 24.555 [17] clause 5.5.

Start using the new UE policies for 5G ProSe UE-to-network relay received in MANAGE UE POLICY COMMAND message

Stop using the old UE policies for 5G ProSe UE-to-network relay

Initiate the UE-requested ProSeP provisioning procedure

(NOTE 1)

T5054

Validity timer value for UE policies for 5G ProSe remote UE (see clause 5.2), which is specified in 3GPP TS 24.555 [17] clause 5.6.

Start using the new UE policies for 5G ProSe Remote UE received in MANAGE UE POLICY COMMAND message

Stop using the old UE policies for 5G ProSe Remote UE

Initiate the UE-requested ProSeP provisioning procedure

(NOTE 1)

T5055

Validity timer value for the security related parameters at the 5G ProSe UE-to-network relay UE, used for UE-to-network relay discovery when the security procedure over control plane as specified in 3GPP TS 33.503 [34] is used (see clause 5.2), which is specified in 3GPP TS 24.555 [17] clause 5.5.

Start using the security related parameters for discovery in the new UE policies for 5G ProSe UE-to-network relay UE received in MANAGE UE POLICY COMMAND message

Stop using the security related parameters for discovery in the old UE policies for 5G ProSe UE-to-network relay UE

Consider the existing configured security related parameters for discovery as invalid

T5056

Validity timer value for the security related parameters at the 5G ProSe remote UE, used for UE-to-network relay discovery when the security procedure over control plane as specified in 3GPP TS 33.503 [34] is used (see clause 5.2), which is specified in 3GPP TS 24.555 [17] clause 5.6.

Start using the security related parameters for discovery in the new UE policies for 5G ProSe remote UE received in MANAGE UE POLICY COMMAND message

Stop using the security related parameters for discovery in the old UE policies for 5G ProSe remote UE

Consider the existing configured security related parameters for discovery as invalid

T5057

Validity timer value for UE policies for 5G ProSe usage information reporting (see clause 5.2), which is specified in 3GPP TS 24.555 [17] clause 5.7.

Start using the new UE policies for 5G ProSe usage information reporting received in MANAGE UE POLICY COMMAND message

Stop using the old UE policies for 5G ProSe usage information reporting

Initiate the UE-requested ProSeP provisioning procedure

(NOTE 1)

NOTE 1: The timers expire only once.

T5080

8s

NOTE 1

Upon sending a PROSE DIRECT LINK ESTABLISHMENT REQUEST message

Upon receiving a PROSE DIRECT LINK ESTABLISHMENT ACCEPT or PROSE DIRECT LINK ESTABLISHMENT REJECT message from the target UE if the Target user info is included in the PROSE DIRECT LINK ESTABLISHMENT REQUEST message

Retransmission of PROSE DIRECT LINK ESTABLISHMENT REQUEST message if the Target user info is included in the PROSE DIRECT LINK ESTABLISHMENT REQUEST message; or

may abort the ongoing procedure if the Target user info is not included in the PROSE DIRECT LINK ESTABLISHMENT REQUEST message

T5081

5s

Upon sending a PROSE DIRECT LINK MODIFICATION REQUEST message

Upon receiving a PROSE DIRECT LINK MODIFICATION ACCEPT or PROSE DIRECT LINK MODIFICATION REJECT or PROSE DIRECT LINK RELEASE REQUEST message from the target UE

Retransmission of PROSE DIRECT LINK MODIFICATION REQUEST message

T5082

2s

Upon sending a PROSE DIRECT LINK IDENTIFIER UPDATE REQUEST message

Upon receiving a PROSE DIRECT LINK IDENTIFIER UPDATE ACCEPT or PROSE DIRECT LINK IDENTIFIER UPDATE REJECT or PROSE DIRECT LINK RELEASE REQUEST message from the target UE

Retransmission of the PROSE DIRECT LINK IDENTIFIER UPDATE REQUEST message

T5083

2s

Upon sending a PROSE DIRECT LINK IDENTIFIER UPDATE ACCEPT message

Upon receiving a PROSE DIRECT LINK IDENTIFIER UPDATE ACK message or PROSE DIRECT LINK RELEASE REQUEST message from the initiating UE

Retransmission of the PROSE DIRECT LINK IDENTIFIER UPDATE ACCEPT message

T5084

5s

Upon receiving a PC5 signalling message or PC5 user plane data

Upon 5G ProSe direct link release or upon initiating the 5G ProSe direct link keep-alive procedure

Initiate the 5G ProSe direct link keep-alive procedure

T5085

5s

Upon sending a PROSE DIRECT LINK KEEPALIVE REQUEST message

Upon receiving a PC5 signalling message or PC5 user plane data

Retransmission of the PROSE DIRECT LINK KEEPALIVE REQUEST message

T5086

Default 10m

NOTE 2

Upon receiving a Maximum inactivity period in a PROSE DIRECT LINK KEEPALIVE REQUEST message, receiving a PC5 signalling message or receiving PC5 user plane data

Upon receiving a PC5 signalling message or PC5 user plane data

Either initiate the 5G ProSe direct link keep-alive procedure or the 5G ProSe direct link release procedure

T5087

5s

Upon sending a PROSE DIRECT LINK RELEASE REQUEST message

Upon receiving a PROSE DIRECT LINK RELEASE ACCEPT message from the target UE

Retransmission of PROSE DIRECT LINK RELEASE REQUEST message

T5088

As described in clause 7.2.2.5 and clause 7.2.6.3

Upon receiving a PROSE DIRECT LINK ESTABLISHMENT REJECT message with PC5 signalling protocol cause value set to #13 "congestion situation" and a back-off timer value is provided in the message

Upon receiving a PROSE DIRECT LINK RELEASE REQUEST message with PC5 signalling protocol cause value set to #13 "congestion situation" and a back-off timer value is provided in the message

Upon receiving PROSE PC5 DISCOVERY message from the same UE-to-network relay UE due to starting announcing UE procedure or discoveree UE procedure as described in clause 8.2.1.2.1.2 and clause 8.2.1.3.2.2 respectively

Take the peer UE onboard for UE-to-network relay UE discovery and selection

T5089

2s

Upon sending a PROSE DIRECT LINK SECURITY MODE COMMAND message

Upon receiving a PROSE DIRECT LINK SECURITY MODE COMPLETE or PROSE DIRECT LINK SECURITY MODE REJECT message from the target UE

Retransmission of PROSE DIRECT LINK SECURITY MODE COMMAND message

T5090

NOTE 2

Upon establishing a 5G ProSe direct link and satisfying the privacy requirement for 5G UE-to-network relay or at least one of ProSe identifiers for the 5G ProSe direct link satisfying the privacy requirements or

upon completing the 5G ProSe direct link identifier update procedure

Upon completing a 5G ProSe direct link identifier update or

upon accepting a PROSE DIRECT LINK IDENTIFIER UPDATE REQUEST message or

upon a 5G ProSe direct link release

Transmission of PROSE DIRECT LINK IDENTIFIER UPDATE REQUEST message

T5091

8s

Upon sending a PROSE DIRECT LINK REKEYING REQUEST message

Upon receiving a PROSE DIRECT LINK REKEYING RESPONSE message or PROSE DIRECT LINK RELEASE REQUEST message from the target UE

Retransmission of PROSE DIRECT LINK REKEYING REQUEST message

T5092

2s

Upon sending a PROSE DIRECT LINK AUTHENTICATION REQUEST message

Upon receiving a PROSE DIRECT LINK AUTHENTICATION RESPONSE or DIRECT LINK AUTHENTICATION REJECT message from the target UE

Retransmission of PROSE DIRECT LINK AUTHENTICATION REQUEST message

T5093

2s

Upon sending a PROSE AA MESSAGE TRANSPORT REQUEST message

Upon receiving a PROSE AA MESSAGE TRANSPORT RESPONSE message from the target UE

Retransmission of PROSE AA MESSAGE TRANSPORT REQUEST message

NOTE 1: If the Target user info is not included in the PROSE DIRECT LINK ESTABLISHMENT REQUEST message, then the initiating UE may keep the timer T5080 running upon receiving PROSE DIRECT LINK ESTABLISHMENT ACCEPT message.

NOTE 2: The value of this timer is the privacy timer value which is one of the configuration parameters for 5G ProSe direct communication (see clause 5.2.4 and clause 5.2.5) and it is specified in 3GPP TS 24.555 [17] clause 5.4, clause 5.5 and clause 5.6.

T5060

NOTE 1

Upon receiving a ProSe application code with an associated T5060 timer in a DISCOVERY_RESPONSE message whose transaction ID contained in the <response-announce> element matches the value sent by the UE in a DISCOVERY_REQUEST message with the command set to "announce", as described in clause 6.2.2.4.

Upon receiving a ProSe application code with an associated T5060 timer in the Update info in the <discovery-update-request> element in a DISCOVERY_UPDATE_REQUEST message and the discovery entry ID in the <discovery-update-request> element is known, as described in clause 6.2.11.3.

Upon receiving a new T5060 timer value for the same ProSe application code or receiving a new Timer associated with a new ProSe application code for the same ProSe application ID in a DISCOVERY_RESPONSE message.

When the UE selects a new PLMN.

Upon receiving a <discovery-update-request> element in a DISCOVERY_UPDATE_REQUEST message and the discovery entry ID in the <discovery-update-request> element is known, as described in clause 6.2.11.3.

Stop announcing the associated ProSe application code over the PC5 interface and re-initiate the announce request procedure if the request from upper layers to announce the ProSe application ID corresponding to the associated ProSe application code is still in place.

T5062

NOTE 2

Upon receiving a ProSe restricted code or ProSe restricted code prefix with an associated T5062 timer in a DISCOVERY_RESPONSE message whose transaction ID contained in the <restricted-announce-response> element matches the value sent by the UE in a DISCOVERY_REQUEST message with the command set to "announce" and the discovery type set to "Restrict discovery", as described in clause 6.2.3.4.

Upon receiving a ProSe restricted code with an associated T5062 timer in the Update info in the <discovery-update-request> element in a DISCOVERY_UPDATE_REQUEST message and the discovery entry ID in the <discovery-update-request> element is known, as described in clause 6.2.12.3.2.

Upon receiving a new T5062 timer value for the same ProSe restricted code or ProSe restricted code prefix, or upon receiving a new T5062 timer associated with a new ProSe restricted code or ProSe restricted code prefix for the same RPAUID in a DISCOVERY_RESPONSE message.

When the UE selects a new PLMN.

Upon receiving a ProSe restricted code with an associated T5062 timer in the Update info in the <discovery-update-request> element in a DISCOVERY_UPDATE_REQUEST message and the discovery entry ID in the <discovery-update-request> element is known, as described in clause 6.2.12.3.2.

Stop announcing the associated ProSe restricted code over the PC5 interface if the ProSe restricted code is already allocated; and re-initiate the announce request procedure if the request from upper layers to announce the RPAUID corresponding to the associated ProSe restricted code is still in place.

T5064

NOTE 3

Upon receiving a discovery filter with an associated T5064 timer in a DISCOVERY_RESPONSE message whose transaction ID contained in the <response-monitor> element matches the value sent by the UE in a DISCOVERY_REQUEST message with the command set to "monitor", as described in clause 6.2.4.4.

Upon receiving a discovery filter in the Update info in the <discovery-update-request> element in a DISCOVERY_UPDATE_REQUEST message and the discovery entry ID in the <discovery-update-request> element is known, as described in clause 6.2.11.3.

Upon receiving a new T5064 timer value for the same discovery filter in a DISCOVERY_RESPONSE message.

Upon receiving a <discovery-update-request> element in a DISCOVERY_UPDATE_REQUEST message and the discovery entry ID in the <discovery-update-request> element is known, as described in clause 6.2.11.3.

Stop using the associated discovery filter for ProSe direct discovery monitoring over the PC5 interface and re-initiate the monitor request procedure, if the request from upper layers to monitor the ProSe application ID corresponding to the associated discovery filter is still in place.

T5066

NOTE 4

Upon receiving a Restricted discovery filter with an associated T5066 timer in a DISCOVERY_RESPONSE message whose transaction ID contained in the <restricted-monitor-response> element matches the value sent by the UE in a DISCOVERY_REQUEST message with the command set to "monitor" and the discovery type set to "Restrict discovery", as described in clause 6.2.5.4.

Upon receiving a Restricted discovery filter in the Update info in the <discovery-update-request> element in a DISCOVERY_UPDATE_REQUEST message and the discovery entry ID in the <discovery-update-request> element is known, as described in clause 6.2.12.3.2.

Upon receiving one or more new T5066 timer values for the same discovery entry in a DISCOVERY_RESPONSE message.

Upon receiving a Restricted discovery filter in the Update info in the <discovery-update-request> element in a DISCOVERY_UPDATE_REQUEST message and the discovery entry ID in the <discovery-update-request> element is known, as described in clause 6.2.12.3.2.

Stop using the associated Restricted discovery filter for restricted 5G ProSe direct discovery monitoring over the PC5 interface and re-initiate the monitor request procedure, if the request from upper layers to monitor the corresponding discovery target is still in place.

T5068

NOTE 5

Upon receiving a ProSe response code and discovery query filters with an associated T5068 timer in a DISCOVERY_RESPONSE message whose transaction ID contained in the < restricted-discoveree-response > element matches the value sent by the UE in a DISCOVERY_REQUEST message with the command set to "response" and the discovery type set to "Restrict discovery", as described in clause 6.2.6.4.

Upon receiving a new T5068 timer value for the same discovery entry in a DISCOVERY_RESPONSE message.

When the UE selects a new PLMN.

Stop announcing the associated ProSe response code or monitoring with the associated discovery query filter(s) over the PC5 interface and re-initiate the discoveree request procedure if the request from upper layers to announce the RPAUID in Model B is still in place.

T5070

NOTE 6

Upon receiving a ProSe query code and discovery response filters with an associated T5070 timer in a DISCOVERY_RESPONSE message whose transaction ID contained in the < restricted-discoverer-response > element matches the value sent by the UE in a DISCOVERY_REQUEST message with the command set to "query" and the discovery type set to "Restrict discovery", as described in clause 6.2.7.4.

Upon receiving a new T5070 timer value for the same discovery entry in a DISCOVERY_RESPONSE message.

Stop announcing the associated ProSe query code or monitoring with the associated discovery response filter(s) over the PC5 interface and re-initiate the discoverer request procedure if the request from upper layers to query for the same targets in Model B is still in place.

T5072

NOTE 7

Upon receiving a T5072 timer in a MATCH_REPORT_ACK message whose transaction ID contained in the <match-ack> element matches the value sent by the UE in a MATCH_REPORT message, as described in clause 6.2.8.4.

Upon receiving a new T5072 timer value for the same ProSe application code in a MATCH_REPORT_ACK message.

Upon receiving a MATCH_REPORT_ACK message with a <match-reject> element containing PC3a control protocol cause value is #5.

The UE may inform the upper layers that the corresponding ProSe application ID is no longer matched.

T5074

NOTE 7

Upon receiving a T5074 timer in a MATCH_REPORT_ACK message whose transaction ID contained in the <match-ack> element matches the value sent by the UE in a MATCH_REPORT message, as described in clause 6.2.8.4.

Upon receiving a new T5074 timer value for the same ProSe application code in a MATCH_REPORT_ACK message.

When the corresponding T5074 timer for the ProSe application code is stopped or expires.

The UE needs to

send a Match Report on next instance it detects the corresponding ProSe application code.

T5076

NOTE 8

Upon receiving a T5076 timer in a MATCH_REPORT_ACK message whose transaction ID contained in the <restricted-match-ack> element matches the value sent by the UE in a MATCH_REPORT message, as described in clause 6.2.9.4 or 6.2.10.4.

Upon receiving a new T5076 timer value for the same ProSe restricted code or ProSe response code in a MATCH_REPORT_ACK message.

Upon receiving a MATCH_REPORT_ACK message with a <match-reject> element containing PC3a control protocol cause value #5.

The UE may inform the upper layers that the corresponding RPAUID is no longer matched.

T5077

NOTE 8

Upon receiving a T5077 timer in a MATCH_REPORT_ACK message whose transaction ID contained in the <restricted-match-ack> element matches the value sent by the UE in a MATCH_REPORT message, as described in clause 6.2.9.4.

Upon receiving a new T5077 timer value for the same ProSe restricted code or ProSe response code in a MATCH_REPORT_ACK message.

When the corresponding T5076 timer for the ProSe restricted code or ProSe response code is stopped or expires.

The UE needs to

send a Match Report on next instance it detects the corresponding ProSe restricted code or ProSe response code.

NOTE 1: The value of this timer is provided by the 5G DDNMF during the announce request and discovery update procedure for open 5G ProSe direct discovery.

NOTE 2: The value of this timer is provided by the 5G DDNMF during the announce request and discovery update procedure for restricted 5G ProSe direct discovery model A.

NOTE 3: The value of this timer is provided by the 5G DDNMF during the monitor request and discovery update procedure for open 5G ProSe direct discovery.

NOTE 4: The value of this timer is provided by the 5G DDNMF during the monitor request and discovery update procedure for restricted 5G ProSe direct discovery model A.

NOTE 5: The value of this timer is assigned by the 5G DDNMF during the discoveree request procedure for restricted 5G ProSe direct discovery model B.

NOTE 6: The value of this timer is assigned by the 5G DDNMF during the discoverer request procedure for restricted 5G ProSe direct discovery model B.

NOTE 7: The value of this timer is provided by the 5G DDNMF during the match report procedure for open 5G ProSe direct discovery.

NOTE 8: The value of this timer is provided by the 5G DDNMF during the match report procedure for restricted 5G ProSe direct discovery model  A or match report procedure for restricted 5G ProSe direct discovery model B.

T5061

NOTE 1

Upon assigning a ProSe application code with an associated T5060 value to the UE, as described in clause 6.2.2.3 and clause 6.2.11.2.

Upon receiving a new DISCOVERY_REQUEST message from the UE with the command set to "announce" for the same ProSe application ID.

Delete the association between the UE, the requested ProSe application ID and the corresponding ProSe application code allocated by the 5G DDNMF.

T5063

NOTE 3

Upon assigning a ProSe restricted code or ProSe restricted code prefix with an associated T5062 value to the UE, as described in clause 6.2.3.3 and clause 6.2.12.3.1.

Upon receiving a new DISCOVERY_REQUEST message from the UE with the command set to "announce" for the same RPAUID or discovery entry ID. Set to be the same as the discovery entry in which this timer is running.

Delete the association between the UE, the RPAUID and the corresponding ProSe restricted code or ProSe restricted code prefix allocated by the 5G DDNMF.

T5065

NOTE 2

Upon assigning a discovery filter with an associated T5064 value to the UE, as described in clause 6.2.4.3 and clause 6.2.11.2.

Upon receiving a new DISCOVERY_REQUEST message from the UE with the command set to "monitor" for the same ProSe application ID

Delete the association between the UE, the requested ProSe application ID and the corresponding discovery filter allocated by the 5G DDNMF.

T5067

NOTE 4

Upon assigning a Restricted discovery filter with an associated T5066 value to the UE, as described in clause 6.2.5.3 and clause 6.2.12.3.1.

Upon receiving a new DISCOVERY_REQUEST message from the UE with the command set to "monitor" and discovery entry ID set to be the same as the discovery entry in which this timer is running.

Delete the association between the UE, the RPAUID and the corresponding Restricted discovery filter allocated by the 5G DDNMF.

T5069

NOTE 5

Upon assigning a ProSe query code, ProSe response code and discovery query filter(s) with an associated T5068 value to the UE, as described in clause 6.2.6.3.

Upon receiving a new DISCOVERY_REQUEST message from the UE with the command set to "response" for the same RPAUID or discovery entry ID. Set to be the same as the discovery entry in which this timer is running.

Delete the discovery entry in discoveree UE context which contains association between the UE, the RPAUID and the corresponding ProSe query code, ProSe response code, discovery query filter(s) allocated by the 5G DDNMF.

T5071

NOTE 6

Upon retrieving the ProSe query code, ProSe response code from discoveree UE context and assigning Discovery Response Filter(s) with an associated T5070 value to the UE, as described in clause 6.2.7.3.

Upon receiving a new DISCOVERY_REQUEST message from the UE with the command set to "query" and discovery entry ID set to be the same as the discovery entry in which this timer is running.

Delete the discovery entry in discoverer UE context which contains the association between the UE, the RPAUID and the corresponding Discovery Response Filter(s) allocated by the 5G DDNMF.

NOTE 1: The value of this timer is assigned by the 5G DDNMF during the announce request and discovery update procedure for open 5G ProSe direct discovery.

NOTE 2: The value of this timer is assigned by the 5G DDNMF during the monitor request and discovery update procedure for open 5G ProSe direct discovery.

NOTE 3: The value of this timer is assigned by the 5G DDNMF during the announce request and discovery update procedure for restricted 5G ProSe direct discovery model A.

NOTE 4: The value of this timer is assigned by the 5G DDNMF during the monitor request and discovery update procedure for restricted 5G ProSe direct discovery model A.

NOTE 5: The value of this timer is assigned by the 5G DDNMF during the discoveree request procedure for restricted 5G ProSe direct discovery model B.

NOTE 6: The value of this timer is assigned by the 5G DDNMF during the discoverer request procedure for restricted 5G ProSe direct discovery model B.

T5100

Privacy timer value for source layer-2 ID of UE for 5G ProSe communication over PC5 (see clause 5.2), which is specified in 3GPP TS 24.555 [17] clause 5.4.

Upon initiating transmission of broadcast mode 5G ProSe communication over PC5, as described in clause 7.3.2.4.

Upon receiving an indication from upper layers that the application layer identifier has been changed while performing transmission of broadcast mode 5G ProSe communication over PC5, as described in clause 7.3.2.4.

Upon T5100 expiration while performing transmission of broadcast mode 5G ProSe communication over PC5, as described in clause 7.3.2.4.

Upon stopping transmission of broadcast mode V2X communication over PC5, as described in clause 7.3.2.4.

Change the value of the source layer-2 ID self-assigned by the UE for broadcast mode ProSe communication over PC5.

If the data unit(s) of a ProSe application contains IP data, change the value of the source IP address self-assigned by the UE for broadcast mode 5G ProSe communication over PC5.

T5200

Privacy timer value for source layer-2 ID of UE for 5G ProSe communication over PC5 (see clause 5.2), which is specified in 3GPP TS 24.555 [17] clause 5.4.

Upon initiating transmission of groupcast mode 5G ProSe communication over PC5, as described in clause 7.4.2.4.

Upon receiving an indication from upper layers that the application layer identifier has been changed while performing transmission of groupcast mode 5G ProSe communication over PC5, as described in clause 7.4.2.4.

Upon T5200 expiration while performing transmission of groupcast mode 5G ProSe communication over PC5, as described in clause 7.4.2.4.

Upon stopping transmission of groupcast mode 5G ProSe communication over PC5, as described in clause 7.4.2.4.

Change the value of the source Layer-2 ID self-assigned by the UE for groupcast mode ProSe communication over PC5.

If the data unit(s) of a ProSe application contains IP data, change the value of the source IP address self-assigned by the UE for groupcast mode 5G ProSe communication over PC5.

T5106

NOTE 1

Upon receiving a T5106 value in a PROSE ADDITIONAL PARAMETERS ANNOUNCEMENT RESPONSE message as described in clause 10.3.25.

Upon receiving one or more new T5106 timer values in a PROSE ADDITIONAL PARAMETERS ANNOUNCEMENT_RESPONSE message.

Re-initiate the additional parameters announcement request procedure, if the upper layer application still needs to obtain NCGI or TAI of the cell serving the 5G ProSe layer-3 UE-to-network relay.

T5107

NOTE 2

Upon sending a PROSE ADDITIONAL PARAMETERS ANNOUNCEMENT RESPONSE message as described in clause 10.3.25.

Upon sending a new PROSE ADDITIONAL PARAMETERS ANNOUNCEMENT RESPONSE message.

Stop the cell ID or TAI announcement in the PROSE PC5 DISCOVERY message for relay discovery additional Information.

NOTE 1: The value of this timer is provided by the 5G ProSe layer-3 UE-to-network relay UE during the 5G ProSe additional parameters announcement procedure.

NOTE 2: The value of this timer is assigned by the 5G ProSe layer-3 UE-to-network relay UE during the 5G ProSe additional parameters announcement procedure.

T5094

Expiration time of the 5G ProSe UE-to-network relay discovery security parameters for 5G ProSe remote UE (see clause 8.2.9.2.2).

Reception of the 5G ProSe UE-to-network relay discovery security parameters for 5G ProSe remote UE.

Stop using the old 5G ProSe UE-to-network relay discovery security parameters for 5G ProSe remote UE.

Initiation of 5G ProSe UE-to-network relay discovery security parameters request procedure, requesting the 5G ProSe UE-to-network relay discovery security parameters for 5G ProSe remote UE.

T5095

Expiration time of the 5G ProSe UE-to-network relay discovery security parameters for 5G ProSe UE-to-network relay UE (see clause 8.2.9.2.2).

Reception of the 5G ProSe UE-to-network relay discovery security parameters for 5G ProSe UE-to-network relay UE.

Stop using the old 5G ProSe UE-to-network relay discovery security parameters for 5G ProSe UE-to-network relay UE.

Initiation of 5G ProSe UE-to-network relay discovery security parameters request procedure, requesting the 5G ProSe UE-to-network relay discovery security parameters for 5G ProSe UE-to-network relay UE.

T5108

2s

Upon sending the PROSE PC5 DISCOVERY message for 5G ProSe UE-to-network relay discovery solicitation used to trigger the PROSE PC5 DISCOVERY message signal strength measurement between the UE and the 5G ProSe UE-to-network relay UE with which the UE has a link established

Upon receiving the PROSE PC5 DISCOVERY message for 5G ProSe UE-to-network relay discovery response from the 5G ProSe UE-to-network relay UE with which the UE has a link established

Retransmission the PROSE PC5 DISCOVERY message for 5G ProSe UE-to-network relay discovery solicitation

T5109

NOTE

Upon receiving the PROSE PC5 DISCOVERY message for 5G ProSe UE-to-network relay discovery response used for the the PROSE PC5 DISCOVERY message signal strength measurement from the 5G ProSe UE-to-network relay UE with which the UE has a link established

Upon releasing the 5G ProSe direct link with a 5G ProSe UE-to-network relay UE

Sending the PROSE PC5 DISCOVERY message for 5G ProSe UE-to-network relay discovery solicitation used to trigger the PROSE PC5 DISCOVERY message signal strength measurement between the UE and the 5G ProSe UE-to-network relay UE with which the UE has a link established

NOTE: The value of this timer is left to implementation.

T50xy

Expiration time of the 5G ProSe UE-to-network relay discovery security material for 5G ProSe remote UE (see clause 8.2.12.2.2).

Reception of the 5G ProSe UE-to-network relay discovery security material for 5G ProSe remote UE.

Stop using the old 5G ProSe UE-to-network relay discovery security material for 5G ProSe remote UE.

Initiation of 5G ProSe UE-to-network relay discovery security material request procedure, requesting the 5G ProSe UE-to-network relay discovery security material for 5G ProSe remote UE.

T50yz

Expiration time of the 5G ProSe UE-to-network relay discovery security material for 5G ProSe UE-to-network relay UE (see clause 8.2.12.2.2).

Reception of the 5G ProSe UE-to-network relay discovery security material for 5G ProSe UE-to-network relay UE.

Stop using the old 5G ProSe UE-to-network relay discovery security material for 5G ProSe UE-to-network relay UE.

Initiation of 5G ProSe UE-to-network relay discovery security material request procedure, requesting the 5G ProSe UE-to-network relay discovery security material for 5G ProSe UE-to-network relay UE.