Section: 5.44.4 Identifiers for PIN
Content: A PIN is managed at the PIN application layer. A unique PIN ID in a PLMN is designated to a PIN, e.g. by PIN application layer as specified in TS 23.542[ Application layer support for Personal IoT Network ]  [181]. In 5GS the PIN ID is only used in the traffic descriptor of URSP rules, for routing traffic of specific PIN towards a dedicated (DNN, S-NSSAI) combination as specified in clause 6.6.2 of TS 23.503[ Policy and charging control framework for the 5G System (5GS); Stage 2 ]  [45]. If a PIN contains more than one PEGCs, the list of PEGCs may be grouped together following the 5G VN group management principles as specified in clause 5.29.2. Then the PEGCs of a PIN can be identified by an External Group ID by the AF for PIN. The AF for PIN may use the External Group ID to manage the list of PEGCs that are part of a PIN and for providing URSP guidance (as specified in clause 5.44.2) and/or QoS requests applicable to all the PEGCs (as specified in clause 5.44.3). NOTE: The PEMCs can also be grouped together with the PEGCs using the 5G VN group management functionality for enabling the PEMCs to communicate with PEGCs via UPF local switch in order to manage the PIN.