The SEALDD layer provides a general functionality to support data storage and data delivery by introducing 5G interaction (N5/N33 in control plane, N6 in user plane), including application data storage and management, application signalling and data transmission, E2E URLCC transmission, IoT message transmission (i.e. MSGin5G), etc.
For media delivery functionality in SEALDD, as shown in Figure D.2-1, the functionality/protocol defined in SA4 can be reused and further enhanced by SEALDD for supporting media type traffic, 5GMS/RTC AF and 5GMS RTC AS in
TS 26.501 and
TS 26.506 is utilized in SEALDD server to support the general media type delivery. The 5G transmission adaptation component is added in SEALDD, to facilitate the specific optimization for XR application provided by 5G network.
NOTE: The functionality about 5G transmission adaptation component for media type will be further detailed based on the other progresses (e.g. application enabler for XR Services).