9 Service specific aspects

22.1533GPPMultimedia priority serviceRelease 19TS

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

9.1 MPS for MMTEL voice

9.1.1 General

MPS for MMTEL voice provides the Service User with priority voice communication sessions in periods of severe network congestion during which normal commercial voice service is degraded.

The system shall support:

– MPS for MMTEL voice and voice conference calls for an authorized Service User using a UE with a subscription for MPS,

NOTE 1: In this case of an UE with an MPS subscription, subscription related information stored in the UE is used, e.g., membership in a special access class as per TS 22.011 [6] is used for EUTRAN access to the EPC and membership in Access Identity 1 as per TS 22.261 [7] is used for 5G (NR and E-UTRAN access to the 5GC).

– MPS for MMTEL voice and voice conference calls for an authorized Service User using a UE that does not have an MPS subscription, and

NOTE 2: In this case, the Service User is not identified by the subscription information stored in the UE (e.g., the Service User borrows a UE that does not have an MPS subscription). In this case, radio interface priority is not provided for the initial request for invocation of MPS. It is provided only after MPS is established for the MMTEL voice call.

– MPS for all participants of an authorized MMTEL voice conference call.

NOTE 3: MPS for all participants of an MMTEL voice conference call allows a Service User (i.e., the host) to establish an MMTEL voice conference with MPS for all participants, or upgrade on ongoing MMTEL voice conference to MPS for all participants regardless of their subscription to MPS.

9.1.2 Invocation and revocation

9.1.2.1 Invocation

A Service User, using a UE with an MPS subscription, can invoke MPS to request priority for an MMTEL voice/conference call, e.g., when the normal MMTEL call cannot be established, or to upgrade an already established normal MMTEL call to MPS.

The system shall support means for a Service User using a UE with an MPS subscription to:

– initiate MPS for an MMTEL voice call or an MPS MMTEL voice conference call, or

– request upgrade of an established MMTEL voice call, or an established MMTEL voice conference call to MPS.

NOTE 1: MPS invocation using a UE with an MPS subscription is done using a predetermined method (e.g., by the Service User inclusion of an MPS-unique identifier or feature code as part of the request to establish an MPS for MMTEL voice call).

A Service User, using a UE with an MPS subscription, can invoke MPS to request priority for an MMTEL voice call or conference call during roaming, e.g., when the normal MMTEL voice/conference call cannot be established, or to upgrade an already established normal MMTEL call to MPS.

The system shall support means for a Service User using a UE with an MPS subscription to:

– initiate MPS for an MMTEL voice call, or an MPS MMTEL voice conference call when roaming within the home country and outside the home country, or

– requests upgrade of an established MMTEL voice call, or an established MMTEL voice conference call to MPS when roaming within the home country and outside the home country.

NOTE 2: MPS invocation using a UE with an MPS subscription is done using a predetermined method (e.g., by the Service User inclusion of an MPS-unique identifier or feature code as part of the request to establish an MPS for MMTEL voice call) that is recognized by the visited PLMN.

A Service User using a UE that does not have an MPS subscription can invoke MPS to request priority for an MMTEL voice call or MMTEL voice conference call, e.g., when the normal MMTEL voice call or MMTEL voice conference call cannot be established.

The system shall support means for a Service User using a UE that does not have a subscription for MPS to initiate MPS for an MMTEL voice call or MMTEL voice conference call.

NOTE 3: MPS invocation using a UE that does not have an MPS subscription is done using a predetermined method that is outside the scope of 3GPP (e.g., by the Service User use of a predetermined access number, such as a special telephone number).

A Service User who is the host of a MMTEL voice conference can invoke MPS to upgrade the entire MMTEL voice conference call to obtain priority treatment for all participants on the MMTEL voice conference call, e.g., when the normal MMTEL voice conference call cannot be established, or to upgrade an already established normal MMTEL conference call to MPS.

The system shall support means for a Service User to:

– initiate MPS for all participants of an MMTEL voice conference call, or

– request upgrade of all participants of an ongoing MMTEL voice conference call to MPS.

The system shall provide MPS for a late participant joining an MPS for MMTEL voice conference after MPS was activated for all participants.

NOTE 4: When MPS is invoked for all participants of a MMTEL voice conference, the user priority level is based on the host MPS Service User, except in cases where an individual participant used MPS to join the conference with a higher user priority level, the higher user priority level is kept.

NOTE 5: The invocation of MPS for all participants may be done using a customized feature of a voice conference service (available only to the host) that indicates a request for priority to the system.

9.1.2.2 Revocation

The 3GPP system shall revoke MPS for the following cases:

upon end of an MPS MMTEL voice call, or an MPS MMTEL voice conference call from a UE with an MPS subscription, and the UE shall return to normal conditions (i.e., use of normal MMTEL voice service),
upon end of an MPS MMTEL voice call, or an MPS MMTEL voice conference call from a UE that does not have an MPS subscription, and the UE shall return to normal conditions (i.e., use of normal voice service), and
upon end of an MPS MMTEL voice conference call where MPS was provided to all participants on the voice conference call, and the UEs shall return to normal conditions (i.e., use of normal MMTEL voice service).

The 3GPP system shall revoke MPS for an individual participant leaving an ongoing MPS for MMTEL voice conference where MPS is activated for all participants.

When an MPS MMTEL voice call or an MPS MMTEL voice conference call is not explicitly ended, upon UE detachment/deregistration (e.g., orderly power down), the system in the RPLMN shall automatically revoke MPS such that MPS priority treatment shall not automatically apply to subsequent calls upon subsequent registration.

9.1.3 Authentication and authorization

The system shall support means to authenticate and authorize an MPS MMTEL voice or voice conference call request from a UE with an MPS subscription.

The system shall support means to authenticate and authorize a Service User request for an MPS MMTEL voice or voice conference call from a UE that does not have an MPS subscription.

NOTE 1: The method for authenticating and authorizing the Service User using a UE that does not have an MPS subscription is predetermined. As part of the authentication and authorization process, the Service User provides MPS credentials (e.g., a calling card number, PIN or security token) specifically assigned for the purpose of obtaining MPS from a UE that does not have an MPS subscription.

The system shall support means for a visited PLMN, including a visited PLMN within or outside of the home country, to verify with the home PLMN that a UE is authorized for MPS, and to authorize an MPS for MMTEL voice or voice conference call.

NOTE 2: The method for authenticating and authorizing UE for MPS when roaming is based on operator policy and roaming agreements between the visited PLMN and home PLMN for MPS as per clause 5.8.

The system shall support means to authenticate and authorize a Service User request to establish or upgrade all participants of an MMTEL voice conference call to MPS priority.

9.1.4 Signalling

The system shall provide priority treatment to the invocation signalling in the network once the request by the Service User for MPS for an MMTEL voice or MMTEL voice conference call is identified by the system.

The system shall support a means for MPS activation when normal MMTEL voice service is congested at the request of the Service User.

The system shall provide priority treatment to the affected signalling when MPS is activated for an MMTEL voice call, or MMTEL voice conference call.

9.1.5 Media

The system shall provide priority treatment to the audio media flows, when MPS is activated for an MMTEL voice call or MMTEL voice conference call.

9.2 MPS for MMTEL video

9.2.1 General

The primary purpose of MPS for MMTEL video is to provide the Service User with priority video communication sessions in periods of severe network congestion during which normal commercial video service is degraded.

The system shall support:

– MPS for MMTEL video and video conference calls for an authorized Service User using a UE with a subscription for MPS,

NOTE 1: In the case of an UE with an MPS subscription, subscription related information stored in the UE is used, e.g., membership in a special access class as per TS 22.011 [6] is used for EUTRAN access to the EPC and membership in Access Identity 1 as per TS 22.261 [7] is used for 5G (NR and E-UTRAN access to the 5GC).

– MPS for MMTEL video and video conference calls for an authorized Service User using a UE that does not have an MPS subscription, and

– MPS for all participants of an authorized MMTEL video conference call.

NOTE 3: MPS for all participants of an MMTEL video conference call allows a Service User (i.e., the host) to establish an MMTEL video conference with MPS for all participants, or upgrade on ongoing MMTEL video conference to MPS for all participants regardless of their subscription to MPS.

9.2.2 Invocation and revocation

9.2.2.1 Invocation

A Service User, using a UE with an MPS subscription, can invoke MPS to request priority for an MMTEL video call or MMTEL video conference call, e.g., when the normal MMTEL video call cannot be established, or to upgrade an already established normal MMTEL call to MPS.

The system shall support means for a Service User using a UE with an MPS subscription to:

– initiate MPS for an MMTEL video call or an MPS MMTEL video conference call, or

– request upgrade of an established MMTEL video call, or an established MMTEL video conference call to MPS.

NOTE 2: In the case where the MMTEL video call is already established but becomes unacceptable, the invocation by the Service User to upgrade the MMTEL video call to MPS may be done using a using a specialized MPS application on the UE (i.e., as an alternative to releasing and retrying the call which may fail).

A Service User, using a UE with an MPS subscription, can invoke MPS to request priority for an MMTEL video call or MMTEL video conference call during roaming, e.g., when the normal MMTEL video call cannot be established, or to upgrade an already established normal MMTEL video/conference call to MPS.

The system shall support means for a Service User using a UE with an MPS subscription to:

– initiate MPS for an MMTEL video call, or an MPS MMTEL video conference call when roaming within the home country and outside the home country, or

– request upgrade of an established MMTEL video call, or an established MMTEL video conference call to MPS when roaming within the home country and outside the home country.

NOTE 3: MPS invocation using a UE with an MPS subscription is done using a predetermined method (e.g., by the Service User inclusion of an MPS-unique identifier or feature code as part of the request to establish an MPS for MMTEL video call) that is recognized by the visited PLMN.

NOTE 4: In the case where the MMTel video call is already established but becomes unacceptable, the invocation by the Service User to upgrade the MMTel video call to MPS may be done using a using a specialized MPS application on the UE (i.e., as an alternative to releasing and retrying the call which may fail) that is recognized by the visited PLMN.

A Service User, using a UE that does not have an MPS subscription, can invoke MPS to request priority for an MMTEL video call or MMTEL video conference call, e.g., when the normal MMTEL video call, or MMTEL video conference call cannot be established

The system shall support means for a Service User using a UE that does not have a subscription for MPS to initiate MPS for an MMTEL video call or MMTEL video conference call.

NOTE 5: MPS invocation using a UE that does not have an MPS subscription is done using a predetermined method (e.g., by the Service User use of a predetermine access number, such as a special telephone number) and is outside the scope of 3GPP.

A Service User who is the host of a MMTEL video conference can invoke MPS to upgrade the entire MMTEL video conference call to obtain priority treatment for all participants on the MMTEL video conference call, e.g., when the normal MMTEL video call cannot be established, or to upgrade an already established normal MMTEL video conference call to MPS.

The system shall support means for a Service User to:

– initiate MPS for all participants of an MMTEL video conference call, or

– request upgrade of all participants of an ongoing MMTEL video conference call to MPS.

The system shall provide MPS for a late participant joining an MPS for MMTEL video conference after MPS was activated for all participants.

NOTE 6: When MPS is invoked for all participants of a MMTEL video conference, the user priority level is based on the host MPS Service User, except in cases where an individual participant used MPS to join the conference with a higher user priority level, the higher user priority level is kept.

NOTE 7: The invocation of MPS for all participants may be done using a customized feature of a video conference service (available only to the host) that indicates a request for priority to the system.

9.2.2.2 Revocation

The 3GPP system shall revoke MPS for the following cases:

upon end of an MPS MMTEL video call, or an MPS MMTEL video conference call from a UE with an MPS subscription, and the UE shall return to normal conditions (i.e., use of normal MMTEL video service),
upon end of an MPS MMTEL video call, or an MPS MMTEL video conference call from a UE that does not have an MPS subscription, and the UE shall return to normal conditions (i.e., use of normal video service), and
upon end of an MPS MMTEL video conference call where MPS was provided to all participants on the video conference call, and the UEs shall return to normal conditions (i.e., use of normal MMTEL video service).

The 3GPP system shall revoke MPS for an individual participant leaving an ongoing MPS for MMTEL video conference where MPS is activated for all participants.

When an MPS MMTEL video call or an MPS MMTEL video conference call is not explicitly ended, upon UE detachment/deregistration (e.g., orderly power down), the 3GPP system in the RPLMN shall automatically revoke MPS such that MPS priority treatment shall not automatically apply to subsequent calls upon subsequent registration.

9.2.3 Authentication and authorization

The system shall support means to authenticate and authorize an MPS MMTEL video or video conference call request from a UE with an MPS subscription.

The system shall support means to authenticate and authorize a Service User request for an MPS MMTEL video or video conference call from a UE that does not have an MPS subscription.

The system shall support means for a visited PLMN, including a visited PLMN outside of the home country, to verify with the home PLMN that a UE is authorized for MPS, and to authorize an MPS for MMTEL video or video conference call.

NOTE 2: The method for authenticating and authorizing UE for MPS when roaming is based on operator policy and roaming agreements between the visited PLMN and home PLMN for MPS as per clause 5.8.

The system shall support means to authenticate and authorize a Service User request to establish or upgrade all participants of an MMTEL video conference call to MPS priority.

9.2.4 Signalling

The system shall provide priority treatment to the invocation signalling in the network once the request by the Service User for MPS for an MMTEL video or MMTEL video conference call is identified by the system.

The system shall support a means for MPS activation when normal MMTEL video service is congested at the request of the Service User.

The system shall provide priority treatment to the affected signalling when MPS is activated for an MMTEL video call, or MMTEL video conference call.

9.2.5 Media

The system shall provide priority treatment to the audio and video media flows, when MPS is activated for an MMTEL video call or MMTEL video conference call.

The system shall support a means to differentiate the priority between the audio and video streams of a given MPS MMTEL video call.

The system shall support a means to differentiate the priority between the audio and video streams of MPS participants (Service Users) on an MMTEL video conference call.

The system shall retain the audio of an MPS for MMTEL video call or MMTEL video conference call when both the audio and video cannot be supported but the audio can be supported.

The system shall support priority re-establishment of the video media when an MPS MMTEL video call, or an MPS MMTEL video conference call, is in progress with only audio media and the conditions which previously blocked the video media are no longer applicable.

NOTE: This requirement does not imply the need to introduce a new IMS feature. It adds the need for priority treatment using the existing IMS feature for re-establishment of the video media.

9.3 MPS for DTS

9.3.1 General

MPS for Data Transport Service (DTS) is a generic priority packet transport service that applies independently of the specific data application being used. It is a specific example of Priority Data Bearer Service described in clause 5.4a. MPS for DTS provides the Service User with priority for applications using the default bearer upon request (in the case of EPS), or QoS flow associated with the default QoS rule upon request (in the case of 5GS), to one or more selected active Packet Data Networks (PDNs)/Data Networks (DNs), in periods of severe network congestion during which normal commercial data service is degraded. MPS for DTS may also apply to other bearers (in the case of EPS) and other QoS Flows (in the case of 5GS) based on operator policy and regulatory rules.

NOTE 1: Service Data Flows (SDFs) previously mapped to the default bearer (in case of EPS) / QoS flow associated with the default QoS rule (in case of 5GS), are upgraded to MPS priority.

The system shall support:

– MPS for DTS for an authorized Service User using a UE with a subscription for MPS, and

NOTE 2: In this case of an UE with an MPS subscription, subscription related information stored in the UE is used, e.g., membership in a special access class as per TS 22.011 [6] is used for EUTRAN access to the EPC and membership in Access Identity 1 as per TS 22.261 [7] is used for 5G (NR and E-UTRAN access to the 5GC).

– MPS for DTS for an authorized Service User using a UE that does not have an MPS subscription.

NOTE 3: In this case, the Service User is not identified by the subscription related information stored in the UE (e.g., the Service User borrows a UE that does not have an MPS subscription). In this case, radio interface priority is not provided for the initial request for invocation of MPS. It is provided only after MPS is established for the DTS session.

MPS for DTS may be used to by a Service User to obtain priority access (e.g., Virtual Private Network (VPN) access) to an enterprise network (e.g., a private corporate network or private Government Agency network to download data and/or access enterprise applications such as email, text/chat/presence, voice and video).

The system shall support for an authorised Service User, an end-to-end MPS for DTS connection between the MPS subscribed UE and an associated enterprise network supporting MPS on demand based on operator policy and when agreements are in place for MPS.

NOTE 4: The end-to-end MPS for DTS connection between the UE and an associated enterprise network is supported either using a web browser (e.g., use of a predetermined address (i.e., URL) in a web browser) or using a user-selectable option provided as part of the VPN client in the UE with an MPS subscription.

MPS for DTS provides an IoT device with subscription to MPS with priority for applications using a specific default bearer (in the case of EPS), or default QoS flow (in the case of 5GS), towards a single specified PDN/DN;in the case of IoT connectivity to an enterprise, MPS also provides priority for the terminating access network (connected to the enterprise).

The system shall support:

– MPS for DTS for an authorized IoT device with a subscription for MPS, and

– an end-to-end MPS for DTS connection between the MPS subscribed IoT device and an associated enterprise network supporting MPS on demand based on operator policy when agreements are in place for MPS.

NOTE 5: An MPS specialized application on the MPS subscribed IoT device is used to support MPS for DTS through machine interactions that may not directly involve a human Service User.

An authorized enterprise network supporting MPS uses MPS for DTS to activate priority for remote MPS subscribed UEs and MPS subscribed IoT devices associated with the enterprise network based on operator policy when agreements are in place for MPS.

The system shall support:

– for an authorized enterprise network supporting MPS, activation of MPS for DTS for remote MPS subscribed UEs associated with the enterprise network on demand based on operator policy when agreements are in place for MPS, and

– for an authorized enterprise network supporting MPS, activation of MPS for DTS for remote MPS subscribed IoT devices associated with the enterprise network on demand based on operator policy when agreements are in place for MPS.

NOTE 6: MPS for DTS activation by an authorized enterprise network supporting MPS involves prearrangement and configuration (i.e., subscription arrangement identifying the enterprise network authorization for remote activation of DTS in IoT devices) within the MPS Service Provider PLMN.

9.3.2 Invocation and revocation

9.3.2.1 Invocation

A Service User, using a UE with an MPS subscription, can invoke MPS for DTS to request priority, e.g., when the normal data session cannot be established, or to upgrade an already established normal data session to MPS.

The system shall support means for a Service User using a UE with an MPS subscription to initiate MPS for a DTS session.

NOTE 1: MPS invocation using a UE with an MPS subscription is done using a predetermined method (e.g., by the Service User using a web browser to enter a predetermined address such as an URL).

A Service User, using a UE with an MPS subscription, can invoke MPS to request priority during roaming, e.g., when the normal data sessions cannot be established, or to upgrade an already established normal data session to MPS.

The system shall support means for a Service User using a UE with an MPS subscription to initiate MPS for DTS session when roaming within the home country and outside the home country.

NOTE 2: MPS for DTS invocation using a UE with an MPS subscription is done using a predetermined method (e.g., by the Service User using a web browser to enter a predetermined address such as an URL) recognized by the visited PLMN.

A Service User, using a UE that does not have an MPS subscription, can invoke MPS for DTS to request priority, e.g., when the normal data session cannot be established, or to upgrade an already established normal data session to MPS.

The system shall support means for a Service User using a UE that does not have a subscription for MPS to initiate MPS for DTS.

NOTE 3: MPS for DTS invocation using a UE that does not have an MPS subscription is done using a predetermined method (e.g., by the Service User use of a predetermine URL address) and is outside the scope of 3GPP.

A Service User, using a UE with an MPS subscription, can invoke MPS for DTS to obtain priority for Virtual Private Network (VPN) access to an enterprise network (e.g., a Government Agency private enterprise network), e.g., when normal data session cannot be established or is degraded.

The system shall support means for a Service User using a UE with an MPS subscription to initiate an MPS for DTS session to an associated enterprise network supporting MPS on demand based on operator policy and when agreements are in place for MPS.

NOTE 4: Invocation of MPS for DTS is done either using a web browser (e.g., use of a predetermined address (i.e., URL) in a web browser) or using a user-selectable option provided as part of the VPN client in the UE with an MPS subscription.

An IoT device with an MPS subscription can invoke MPS for DTS to request priority when normal data service is degraded.

The system shall support means for an IoT device with an MPS subscription to initiate an MPS for DTS session to an enterprise network supporting MPS.

NOTE 5: An MPS specialized application on the MPS subscribed IoT device is responsible for determining whether or not to invoke MPS for DTS in support of the data communication needs. The MPS specialized application allows invocation/revocation of the DTS through machine interactions that may not directly involve a human Service User.

An authorized enterprise network supporting MPS activates MPS for DTS to request priority for MPS subscribed UEs and MPS subscribed IoT devices associated with the enterprise network when normal data service is unacceptable.

The 3GPP system shall support means for an authorized enterprise network supporting MPS to request activation of MPS for DTS for the following cases:

– a specific MPS subscribed UE or IoT device, and

– a group of MPS subscribed UEs or IoT devices.

NOTE 6: MPS for DTS invocation done by the enterprise network supporting MPS involves prearrangement and configuration (i.e., subscription arrangement identifying the enterprise network authorization for remote activation of DTS in IoT devices) within the MPS Service Provider PLMN. For example, an MPS specialized application hosted in the enterprise network (e.g., IoT application server) may be responsible for determining whether or not to invoke MPS for DTS. The MPS specialized application allows invocation/revocation of the DTS through machine interactions that may not directly involve a human Service User.

The system shall support receiving and authenticating MPS for DTS invocation requests from authorized MPS Service Users via public non-3GPP networks.

NOTE 7: The intent of the above requirement is to allow an authorized MPS Service User to send a request via the Internet to establish an MPS for DTS session for one or more active PDNs/DNs of a UE.

The system shall support discovery and selection of active data connections upon receipt of an MPS for DTS invocation request by an authorized MPS Service User.

9.3.2.2 Revocation

The system shall support means to release an MPS for DTS session for the cases:

– an MPS Service User using a UE with an MPS subscription,

– an MPS Service User using a UE that does not have an MPS subscription, and

– an IoT device with an MPS subscription.

The system shall support means for an authorized enterprise network supporting MPS to explicitly request to release an MPS for DTS session or group of MPS for DTS sessions while maintaining basic connectivity to the MPS subscribed UE(s) or IoT device(s).

The system shall support means for an MPS Service User to explicitly release an MPS for DTS session from a UE with an MPS subscription when roaming, including outside the home country.

If MPS for DTS is not explicitly revoked by the Service User or an IoT device, the system in the RPLMN shall automatically revoke MPS:

– upon UE detachment/deregistration (e.g., power down), or

– when all the connections pertaining to the MPS for DTS session are released (without explicit release of the MPS for DTS session).

The system shall automatically revoke MPS when the maximum allowed duration for an MPS for DTS session is reached.

9.3.3 Authentication and authorization

The system shall support means to authenticate and authorize an MPS for DTS session request from a UE with an MPS subscription.

The system shall support means to authenticate and authorize a Service User request for an MPS for DTS session from a UE that does not have an MPS subscription.

NOTE 1: The method for authenticating and authorizing the Service User using a UE that does not have an MPS subscription is predetermined. As part of the authentication and authorization process, the Service User provides MPS credentials (e.g., PIN or security token) specifically assigned for the purpose of obtaining MPS from a UE that does not have an MPS subscription.

NOTE 2: The method for authenticating and authorizing UE for MPS when roaming is based on operator policy and roaming agreements between the visited PLMN and home PLMN for MPS as per clause 5.8.

The system shall support means to authenticate and authorize an MPS for DTS session request from an IoT device with an MPS subscription.

The system shall support means to authenticate and authorise an enterprise network supporting MPS requesting activation of MPS for DTS for the following cases:

– a specific MPS subscribed UE or IoT device, and

– a group of MPS subscribed UEs or IoT devices.

9.3.4 Signalling

The system shall provide priority treatment to the invocation signalling in the network once the MPS for DTS request is identified by the system.

The system shall support a means for MPS for DTS activation when normal data service is congested.

9.3.5 Media

The system shall provide priority treatment to the affected media flows when an MPS for DTS session is activated.

The system shall provide priority treatment to the affected media flows when MPS for DTS is activated for the connection between an MPS subscribed UE or IoT device and an associated enterprise network supporting MPS.

NOTE: Both the MPS subscribed UE or IoT device and the enterprise network must be served by the same PLMN.

9.3.6 QoS

The system shall be capable of supporting a set of default QoS characteristics for an active MPS for DTS session.

The system shall be capable of verifying authorization for a requested QoS modification to an active MPS for DTS session.

The system shall be capable of making authorized QoS modifications in support of MPS for DTS for all media traffic supported via the default bearer (in the case of EPS), or the default QoS flow (in the case of 5GS).

The system shall support means to allow a Service User to request QoS modifications for an active MPS for DTS session.

The system shall support means to provide a Service User with an indication that a requested QoS modification of an active MPS for DTS session was successful.

9.3.7 Security

The system shall support security capabilities to verify an enterprise network’s authorization to request MPS for DTS activation.