There's a major difference between a metaverse service and traditional multi-media service. A mobile metaverse service provides a platform which supports different applications to complete a task such as gaming, online-working, online-education, etc. Users will have no limitations on the terminals they use. In existing XR applications, specific brand of VR glasses or gloves are required to be used in a game, different brands of VR glasses and gloves will be very hard to map and coordinate in a same game. But in mobile metaverse services, the nature of the standard will support the coordination between different equipment belonging to different applications or brands.
John has a pair of VR glasses and a pair of tactile gloves. Usually, he uses VR glasses for VR games and tactile gloves for vertical painting where he can feel the brushstrokes. These two activities were running on two different network slices. As the VR glasses was bought to play VR games, the VR game application has a network slice A which is better support the game service. Tactile gloves belong to Brand B which has another network slice B.
In the mobile metaverse, there are many different types of services such as games, concerts, education, etc. And the mobile metaverse services has subscribed different network slice for these different types of service, and different QoS for different flows accordingly for better user experience.
John used both the VR glasses and the tactile gloves in distinct mobile metaverse services with very good user combined experience.
The 5G system can support different communication performance policies for services and provides some support for resolving conflicts between the policies of different services.
There is however no way to for the 5G system to coordinate the communication performance delivered so that divergence in communication performance is reduced for distinct services (i.e. from different service providers).
Clause 4.3.1 of TS 23.503
includes the following general requirement "The PCC framework shall allow the resolution of conflicts which would otherwise cause a subscriber's Subscribed Guaranteed Bandwidth QoS to be exceeded."
Clause 22.214.171.124 of TS 23.503
explains that "Service pre-emption priority enables the PCF to resolve conflicts where the activation of all requested active PCC rules for services would result in a cumulative authorized QoS which exceeds the Subscribed Guaranteed bandwidth QoS."
The 5G system shall provide the capability of reducing the differences between different mobile metaverse services communication performance for a given UE to prevent inconsistency of experience due to XR media with divergent or conflicting characteristics, e.g., resolution, latency or packet loss.