XR (Extended Reality) refers to a set of general services which leverage High Data Rate Low Latency (HDRLL), AR/VR, and tactile/multi-modality communication. SA1 defines the requirement for XR (Extended Reality) relevant Services. In Release-18, SA1 defined the requirement for tactile and multi-modal communication service in clause 6.43 of TS 22.261, including the support to provide policy(ies) for flows associated with an application, and apply 3rd party provided policy(ies). XRM in SA2 studies the key issues, solutions and conclusions on the support of advanced media services, e.g. High Data Rate Low Latency (HDRLL) services, AR/VR/XR services, and tactile/multi-modality communication services. Also, some network information is going to be exposed, including the congestion level information, Data rate, delay difference and round trip delay of QoS flow. Considering the XR requires high bandwidth and low latency requirement, it is important to explore how to ensure transmission quality from the application enabling layer, based on the capabilities of the 5GC and the policies or application information provided by AF(s).

The present document studies application enabling layer architecture requirements, key issues, and solution recommendations to support XR services. The study is based on the requirements defined in TS 22.261 and is dependent on the 5GC architecture supporting XRM services as specified in TS 23.501, TS 23.502, and TS 23.503.

The following documents contain provisions which, through reference in this text, constitute provisions of the present document.

• References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific.
• For a specific reference, subsequent revisions do not apply.
• For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.