B.2 Network behaviour

3GPP44.318Generic Access Network (GAN)Mobile GAN interface layer 3 specificationRelease 17TS

When the GANC-SEGW receives an IP packet from the GANC, it shall make sure that the DSCP (DiffServ Code Point) values from the ‘inner’ IP header are mapped to the ‘outer’ IP header (according to operator configuration) before forwarding the packet to the MS using the established SA. When several flows are using the same IPsec tunnel and have a different QoS, e.g. a PS streaming class flow and a PS background flow, the GANC may decide to assign a specific DSCP value for each flow identified by its Packet Flow Identifier.