5.5 Simultaneous access to multiple services

23.2213GPPArchitectural requirementsRelease 17TS

A UE can have multiple services active simultaneously. When the services are part of different IP addressing domains, separate EPS Bearer or PDP contexts and IP addresses are required. The UE shall support multiple IP addresses when simultaneous EPS Bearer or PDP contexts are activated that require separate IP addresses for different addressing domains.

Figure 5-6 shows an example of a connection between a UE and an Internet/Intranet service that is not available in the Visited Network with a simultaneous connection to the Visited Network’s IM Subsystem. In this example, there may be two IPv6 addresses allocated, or one IPv4 address allocated for internet/Intranet access and oneIPv6 address for IM subsystem access.

Figure 5-6: UE Accessing Home Internet/Intranet Services and Visited Network IM CN Subsystem Services