Page 23 - Use cases and requirements for the vehicular multimedia networks - Focus Group on Vehicular Multimedia (FG-VM)

CR5: The VMS shall allow the user to configure or limit types of data transmission over various
communication networks.

7.3 Network convergence transmission and onboard terminal processing

The network architecture of convergence transmission, as shown in Figure 6, illustrates how the
network convergence greatly improves system efficiency and user experience.

Figure 6 – The network architecture of convergence transmission
7.3.1 Use cases

Scenario 1: Vehicle A commutes in metropolitan areas with satellite broadcasting signal being
intermittently blocked by high-rise buildings; vehicle B takes a weekend excursion to remote areas
where 4G/5G cellular coverage is limited; vehicle C is on a long road trip across country during which
favorite channels from home city are played throughout the whole trip. In either of the above cases,
as long as one bearer of the converged networks has signal coverage, the services available are
uninterrupted while the overall data charges are kept at minimum;

Scenario 2: Users enjoy rich media content and various services, such as live/on-demand audios and
videos, pushed data, on-the-go Internet, emergency alert, global navigation satellite system (GNSS)
etc., on one unified in-vehicle infotainment platform over converged networks, without having to care
about the actual bearer that carries the service;

Scenario 3: The driver in a vehicle equipped with vehicular multimedia system can enjoy high-quality
audio, videos and other value-added services through in-vehicle screen and speakers;

Scenario 4: Each passenger inside a vehicle equipped with VM system can enjoy their own choice of
high-quality audio, video, and other value-added services on their personal smartphones or tablets
through Wi-Fi access;

Scenario 5: Users who have downloaded the APP on their mobile phones/pads can continue enjoying
the same program at the same quality of service using their own internet connections, when out of the
vehicle Wi-Fi coverage.

7.3.2 Gap analysis
Various media services, i.e., live/on-demand audio/video service, pushed data service, on-the-go
Internet service, shall be supported by the VMN and the vehicle VMS over a variety of underlying
broadcast and communication networks. In order to guarantee the QoS of these services and improve
the network efficiency, carefully designed transmission protocols and reception methods shall be
pursued. Firstly, the transmission protocols and reception methods shall support various underlying
physical-layer transmission standards, i.e., various wireless broadcast standards and wireless access

FGVM-01R1 (2019) 13