6.26 5G LAN-type service
22.2613GPPRelease 18Service requirements for the 5G systemTS
6.26.1 Description
5G expands the scope and reach of 3GPP-defined technologies. There are multiple market segments in the realm of residential, office, enterprise and factory, where 5G will need to provide services with similar functionalities to Local Area Networks (LANs) and VPN’s but improved with 5G capabilities (e.g. high performance, long distance access, mobility and security).
6.26.2 Requirements
6.26.2.1 General
The 5G system shall support 5G LAN-type service in a shared RAN configuration.
The 5G system shall support 5G LAN-type service over a wide area mobile network.
The 5G network shall support service continuity for 5G LAN-type service, i.e. the private communication between UEs shall not be interrupted when one or more UEs of the private communication move within the same network that provides the 5G LAN-type service.
The 5G system shall support use of unlicensed as well as licensed spectrum for 5G LAN-type services.
The 5G system shall enable the network operator to provide the same 5G LAN-type service to any 5G UE, regardless of whether it is connected via public base stations, indoor small base stations connected via fixed access, or via relay UEs connected to either of these two types of base stations.
6.26.2.2 5G LAN-virtual network (5G LAN-VN)
A UE shall be able to select a 5G LAN-VN, that the UE is a member of, for private communication.
A 5G system shall support 5G LAN-VNs with member UEs numbering between a few to tens of thousands.
The 5G system shall be able to support large numbers of small 5G LAN-VNs.
NOTE: Targeting residential deployments translate into millions of 5GLAN-VN per operator per country. These residential 5G LAN-VNs typically contain between 10-50 devices.
The 5G LAN-VN shall support member UEs that are subscribed to different PLMNs, e.g. a 5G LAN-VN may span multiple countries and have member UEs that have a subscription to a PLMN in their home country.
The 5G system shall support on-demand establishment of UE to UE, multicast, and broadcast private communication between members UEs of the same 5G LAN-VN. Multiple types of data communication shall be supported, at least IP and Ethernet.
The 5G network shall ensure that only member UEs of the same 5G LAN-VN are able to establish or maintain private communications among each other using 5G LAN-type service.
The 5G system shall allow member UEs of a 5G LAN-VN to join an authorized multicast session over that 5G LAN-VN.
The 5G system shall be able to restrict private communications within a 5G LAN-VN based on UE’s location (i.e. when the UE moves out of the area it can no longer communicate on the 5G LAN-VN).
The 5G network shall enable member UEs of a 5G LAN-VN to use multicast/broadcast over a 5G LAN-type service to communicate with required latency (e.g. 180 ms).
The 5G system shall support a mechanism to provide consistent QoE to all the member UEs of the same 5G LAN-VN.
The 5G system shall support routing based on a private addressing scheme within the 5G LAN-VN.
The 5G system shall support a communication path between a non-3GPP device in the CPN and a UE in the 5G-LAN VN via the eRG of the CPN, for an eRG that is part of the 5G LAN-VN.
6.26.2.3 Creation and management
The 5G network shall enable the network operator to scale up/down a 5G LAN-VN, e.g. the coverage, capacity for efficient consumption of network resources.
The 5G network shall enable the network operator to create, manage, and remove 5G LAN-VN including their related functionality (subscription data, routing and addressing functionality).
The 5G network shall enable the network operator to add one or more authorized UEs to an existing 5G LAN-VN.
NOTE 1: A UE needs to be authorized by the MNO to use 5G LAN-type service before it can be added to any 5G LAN-VN.
NOTE 2: some use cases will require user permission for a UE to be added to a 5G LAN-VN.
The 5G system shall enable the network operator to add an authorized UE to multiple independent 5G LAN-VNs.
The 5G network shall enable the network operator to remove one or more UEs from an existing 5G LAN-VN.
NOTE 3: Removing a UE from a 5G LAN-VN does not have impact on other 5G LAN-VNs that the UE is a member of.
The 5G system shall enable the network operator to configure a 5G LAN-VN that is available only within a geographical area.
Based on MNO policy, the 5G network shall provide suitable means to allow an authorised third party to
– monitor changes in QoS policy that pertains to LAN-VN performance;
– configure and receive information regarding the achieved performance for a specific UE;
– configure and receive information regarding the achieved performance for a specific network;
– receive notification of changes in specific configuration aspects of the UE in the VN (e.g., changes in group membership information.)
6.26.2.4 Privacy
The 5G system shall be able to prevent the sharing of a UE’s identifying information (e.g. SUPI, MSISDN) on private communication among UEs using 5G LAN-type service.
6.26.2.5 Traffic types
A 5G system shall support all media types (e.g. voice, data, multimedia) for 5G LAN-type service.
The 5G system shall support traffic scenarios typically found in a home setting (from sensors to video streaming, relatively low amount of UEs per group, many devices are used only occasionally) for 5G LAN-type service.
The 5G system shall support traffic scenarios typically found in an office setting (from sensors to very high data rates e.g. for conferencing, medium amount of UEs per group) for 5G LAN-type service.
The 5G system shall support traffic scenarios typically found in an industrial setting (from sensors to remote control, large amount of UEs per group) for 5G LAN-type service.
6.26.2.6 Discovery
The 5G system shall enable a member UE to discover other member UEs within the same 5G LAN-VN.
The 5G LAN-type service shall be able to support existing non-3GPP service discovery mechanisms (e.g. mechanisms to discover printers).
6.26.2.7 (void)
6.26.2.8 Indirect communication mode
The 5G system shall support 5G LAN-type service for authorized UEs using indirect network connection or direct network connection.
The 5G network shall be able to provide a remote UE using 5G LAN-type service with same level of service as if the remote UE would be using a direct network connection (i.e. provide required QoS for the Ethernet packets transferred between remote UE and relay UE if they are using 3GPP access).
The 5G network shall be able to support service continuity for the private communication between a remote UE with other member UEs of the same 5G LAN-VN, when the remote UE changes from one relay UE to another or when the UE changes between direct and indirect network connection.
6.26.2.9 Service exposure
Based on MNO policy, the 5G network shall provide suitable APIs to allow a trusted third-party to create/remove a 5G LAN-VN.
Based on MNO policy, the 5G network shall provide suitable APIs to allow a trusted third-party to manage a 5G LAN-VN dedicated for the usage by the trusted third-party, including the address allocation.
Based on MNO policy, the 5G network shall provide suitable APIs to allow a trusted third-party to authorize/deauthorize UEs to access a specific 5G LAN-VN managed by the trusted third-party.
Based on MNO policy, the 5G network shall provide suitable APIs to allow a trusted third-party to add/remove an authorized UE to/from a specific 5G LAN-VN managed by the trusted third-party.