Content for  TS 22.261  Word version:  20.0.0

The 5G system shall support mechanisms to identify a PIN, a PIN Element, an eRG and a PRAS. Subject to local regulations, the 5G system shall support regulatory requirements for emergency calls, PWS and eCall for UEs connected via a CPN. The 5G system shall support applications on an Application Server connected to a CPN or PIN. The 5G system shall be able to support PINs with PIN Elements subscribed to more than one network operator (e.g., a PIN Element that is a MUSIM UE and subscribes to different operators respectively, one PIN Element subscribed to network operator A and another PIN Element subscribed to network operator B). Subject to regulatory requirements and operator policy, the 5G system shall support an efficient data path within the CPN for intra-CPN communications. Subject to regulatory requirements and operator policy, the 5G system shall support a data path not traversing the 5G network for intra-PIN communications via direct connections. The 5G system shall enable the network operator to provide any 5G services to any UE via a PRAS connected via an eRG. The 5G system shall minimize service disruption for a UE that is moving between CPN access and operator provided mobile access. The 5G system shall minimize service disruption when a CPN communication path changes between two PRASes. The 5G system shall be able to minimize service disruption when a PIN Element changes the communication path from one PIN Element (e.g. PIN Element with Gateway Capability) to another PIN Element or operator provided mobile access. The communication path between PIN Elements may include licensed and unlicensed spectrum as well as 3GPP and non-3GPP access. The 5G system shall be able to support PRAS sharing between multiple PLMNs. The 5G system shall support mechanisms to aggregate, switch or split the service between non-3GPP RAT and PIN direct connections using licensed spectrum.

Subject to operator policy, the 5G network shall support an authorised eRG without a USIM to access the 5G core network via wireline access only. The 5G system shall be able to support access to the 5G network and its services via at least one gateway (i.e. PIN Element with Gateway Capability or eRG or legacy residential gateway) for authorised UEs and authorised non-3GPP devices in a PIN or a CPN. The 5G system shall be able to support IP traffic offload to data network for a CPN. Under operator control, an eRG, shall be able to efficiently deliver 5G multicast/broadcast services to authorized UEs and non-3GPP devices in the CPN.

The 5G system shall allow PIN Elements to communicate when there is no connectivity between a PIN Element with Gateway Capability and a 5G network. For a Public Safety PIN licensed spectrum may be used for PIN direct communications otherwise unlicensed spectrum shall be used. When a CPN has lost connectivity with the 5G network, the 5G system shall provide an operator-controlled mechanism to enable:

• in the default configuration, or under certain conditions configured by the operator, the PRAS radio interface shall be deactivated; and
• under certain other conditions configured by the operator, the CPN shall continue existing intra-CPN communication, as long as no interaction with the 5G network is needed (e.g. refreshing security keys).

The 5G system shall enable a UE or non-3GPP device in a CPN or PIN to discover other UEs or non-3GPP devices within the same CPN or PIN subject to acess rights. The 5G system shall efficiently support service discovery mechanisms where a UE or non-3GPP device in a CPN or PIN can discover, subject to access rights:

• availability and reachability of other entities (e.g. other UEs or non-3GPP devices) on the CPN or PIN;
• capabilities of other entities on the CPN (e.g. PRAS, eRG) or PIN (e.g. relay UE, connection types) and/or;
• services provided by other entities on the CPN or PIN (e.g. the entity is a printer).

The 5G system shall support a mechanism for an Authorised Administrator to indicate whether a PIN element is discoverable by other PIN elements of the same PIN. The 5G system shall support a mechanism for an Authorised Administrator to indicate whether a PIN element is discoverable by UEs that are not members of the PIN.

In addition to the relay selection requirements in clause 6.9.2.4, relay selection within a PIN is enabled for both UEs and non-3GPP device and supports the additional selection criteria:

• The 5G system shall support a mechanism for a PIN Element to select a relay for PIN direct connection that enables access to the target PIN Element.

The 5G system shall provide user privacy; location privacy, identity protection and communication confidentiallity for non-3GPP devices and UEs that are using the PIN Element with Gateway Capability, eRG or PRAS. The 5G system shall support a mechanism to minimize the security risk of communications using an eRG. The 5G system shall enable the network operator associated with an eRG to control the security policy of an eRG. Subject to operator policy, the 5G network shall provide support to authenticate an eRG without a USIM to access the 5G core network via wireline access only. The 5G system shall support a mechanism to minimize the security risk of communications via a PRAS. The PRAS (and its associated backhaul connectivity) shall provide a level of security equivalent to regular 5G base stations. The 5G system shall enable the network operator associated with the Premises Radio Access Station (PRAS) to control the security policy of the PRAS. The 5G system shall support authentication of a UE with 3GPP credentials for communication with entities (UEs, non-3GPP devices) in a CPN. The 5G system shall provide support for a network operator to authenticate a PRAS. The 5G system shall provide support for a network operator to authorize a PRAS for its use in a CPN. The 5G system shall support a PIN Element using non operator managed credentials (e.g. provided by a third party) for performing communications within the PIN when those communications use PIN direct connections. The 5G system shall support a mechanism to mitigate repeated and unauthorized attempts to access PIN Elements (e.g. mitigate a malicious flood of messages).

The 5G system shall support real time E2E QoS monitoring and control for any intra-CPN data traffic to or from a UE (i.e. via eRG or via PRAS and eRG). The 5G system shall support real time E2E QoS monitoring and control for any data traffic between a UE within a CPN and the 5G network (i.e. via eRG or via PRAS and eRG).

The 5G system shall support charging data collection for data traffic to/from individual UEs in a CPN or PIN (i.e., UEs behind the PIN Element with Gateway Capability or eRG and/or PRAS). The 5G system shall be able to generate charging data that can differentiate between backhaul for the PRAS and other data traffic over the same access.

The 5G system shall support a mechanism for the network operator to provision an eRG with:

• policies on which transport (e.g. wireless, cable, etc.) is best suited for different negotiated QoS levels,
• authentication credentials,
• identification,
• initial OA&M information, and
• associated subscription.
  The 5G system shall enable the network operator to configure a PRAS with:
  • radio settings pertaining to licensed spectrum,
  • authentication credentials,
  • identification,
  • initial OA&M information, and
  • associated subscription.
  Subject to operator policy, the 5G system shall enable the Authorised Administrator to provision a PRAS with UE access considerations (allowing all UEs, or allowing specific UEs only)
  The 5G system shall provide a mechanism for the Authorised Administrator to trigger initial provisioning of an eRG.
  The 5G system shall provide a mechanism for the Authorised Administrator to trigger initial provisioning of a PRAS.
  The 5G system shall support mechanisms for a network operator or authorized 3rd party (e.g., a PIN User) to create, remove and manage a PIN, including:
  • Authorizing/deauthorizing PIN Elements;
  • Authorizing/deauthorizing PIN Elements with Management Capability;
  • Authorizing/deauthorizing PIN Elements with Gateway Capability;
  • Establishing duration of the PIN;
  • Configure PIN Elements to enable service discovery of other PIN Elements;
  • Authorize/deauthorise if a PIN Element can use a PIN Element with Gateway Capability to communicate with the 5GS;
  • Authorize/deauthorise for a PIN Element(s):
  • which other PIN Element it can communicate with,
  • which applications/service or service in that PIN it can access,
  • which PIN Element it can use as a relay.
  • Authorize/deauthorise a UE to perform service discovery of PIN Elements over the 5G network;
  • Configure a PIN Element for external connectivity e.g.via 5G system;
  The 5G system shall support a mechanism to enable a UE that is not a PIN Element of the PIN or a non-3GPP device that is not a PIN element of the PIN to request to join the PIN.
  The 5G system shall support mechanisms for a network operator to configure the following policies in a PIN:
  • Configure the connectivity type (e.g. licensed, unlicensed PIN direct connection) a PIN Element can use.
  5G system shall be able to support mechanism to provide life span information of the PIN to the authorized 3rd party or the PIN elements when the PIN is created for limited time span.
  The 5G system shall provide means to control which UEs can connect to a PRAS.
  The 5G system shall support mechanisms to provision a PIN Element to use either licensed (under control of a MNO) or unlicensed spectrum (may be under the control of the MNO, or not) (e.g., when it has no connectivity to the 5G system).

Based on operator policy, the 5G system shall be able to provide means to allow an authorized third-party to monitor the resource utilisation of the network service that is associated with the third-party. Based on operator policy, the 5G system shall be able to provide an indication about a planned change of bitrate, latency, or reliability for a QoS flow to an authorized 3rd party so that the 3rd party AI/ML application is able to adjust the application layer behaviour if time allows. The indication shall provide the anticipated time and location of the change, as well as the target QoS parameters. Based on operator policy, 5G system shall be able to provide means to predict and expose predicted network condition changes (i.e. bitrate, latency, reliability) per UE, to an authorized third party. Subject to user consent, operator policy and regulatory constraints, the 5G system shall be able to support a mechanism to expose monitoring and status information of an AI-ML session to a 3rd party AI/ML application. 5G system shall be able to provide event alerting to an authorized 3rd party, together with a predicted time of the event (e.g., alerting about traffic congestion or UE moving into/out of a different geographical area). The 5G system shall be able to expose aggregated QoS parameter values for a group of UEs to an authorized service provider. The 5G system shall be able to support an authorised 3rd party to change aggregated QoS parameter values associated with a group of UEs, e.g. UEs of a FL group. Subject to user consent, operator policy and regulatory requirements, the 5G system shall be able to expose information (e.g. candidate UEs) to an authorized 3rd party to assist the 3rd party to determine member(s) of a group of UEs (e.g. UEs of a FL group).

Based on user consent, operator policy and trusted 3rd party request, the 5G system shall support a means to authorize specific UEs to transmit data (e.g. AI-ML model data for a specific application,) via direct device connection in a certain location and time. Based on user consent, operator policy, and trusted 3rd party's request, the 5G system shall be able to provide means for an operator to authorize specific UEs who participate in the same service (e.g. for the same AI-ML FL task) to exchange data with each other via direct device connection, e.g. when direct network connection cannot fulfil the required QoS. Based on user consent, operator policy and trusted 3rd party request, the 5G system shall be able to dynamically add or remove specific UEs to/from the same service (e.g. a AI-ML federated learning task) when communicating via direct device connection. Based on user consent and operator policy, the 5G system shall be able to provide means for the network to configure and modify remote UEs' communication QoS, when a relay UE is involved, e.g., to satisfy end to end latency for proximity-based work task offloading. Subject to user consent and operator policy, the 5G system shall be able to support configuration of the QoS (e.g., latency, reliability, data rate) of a communication path using direct device connection, e.g., for AI-ML data transfer. Based on user consent, operator policy and trusted 3rd party request, the 5G system shall be able to support means to monitor the QoS characteristics (e.g. data rate, latency) of traffic transmitted via direct device connection or relayed by a UE, and 5G network expose the monitored information to the 3rd party. Subject to user consent, operator policy and trusted 3rd party request, the 5G system shall be able to provide means the network to predict and expose QoS information changes for UEs' traffic using direct or indirect network connection (e.g., bitrate, latency, reliability).The 5G system shall be able to support a mechanism for a trusted third-party to negotiate with the 5G system for a suitable QoS for direct device connections of multiple UEs exchanging data with each other (e.g. a group of UEs using the same AI-ML service). Based on user consent, operator policy and trusted 3rd party's request, the 5G system shall be able to support and provision an aggregated QoS for multiple remote UEs served by a relay UE. Based on user consent, operator policy and trusted 3rd party's request, the 5G system shall be able to support configuring specific QoS limitations applied to multiple UEs communicating via direct device connection (e.g. part of a joint AI-ML inference task). Subject to user consent, regulation, trusted 3rd party's request and operator policy, the 5G network shall be able to expose information to assist the 3rd party to determine candidate UEs for data transmission via direct device connection (e.g. for AIML model transfer for a specific application). Subject to user consent, operator policy, regulation and trusted 3rd party's request, the 5G network shall be able to expose information of certain UEs using the same service to the 3rd party (e.g. to assist a joint AIML task of UEs in a specific area using direct device communication) The 5G system shall be able to support charging mechanisms for multiple UEs exchanging data for the same service using the direct device connection (e.g. for AI-ML applications).