Specifications

White Paper V800-Vodafone V802SE
21 August 2004
Standards, architecture and protocol
The architecture, protocols and codecs for PSS (Packet Switched Streaming) follow the 3GPP specifica-
tions to ensure interoperability between business solutions. Sony Ericsson fully supports the 3GPP stand-
ard, but will also meet the market requirements of supplementary formats and codecs.
Figure 1 shows the functional components of a
PSS client. Figure 2 gives an overview of the proto-
col stack used in a PSS client and also shows a
more detailed view of the packet based network
interface.
The functional components can be divided into
control, scene description, media codecs and the
transport of media and control data. TS 26.233
“Transparent end-to end packet switched stream-
ing service (PSS); General description” defines the
simple and extended PSS.
The control-related elements are session establish-
ment, capability exchange and session control.
• Session establishment refers to methods of
invoking a PSS session from a browser or
directly by entering an URL in the user interface
of the terminal.
Figure 1. Functional components of a PSS client