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Content for TR 22.856 Word version: 19.2.0

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7.1 Consolidated potential requirements 7.1.1 Localized Mobile Metaverse Service Functionality 7.1.2 Digital representation of users and avatar functionality 7.1.3 Operational efficiency, exposure, and coordination of mobile metaverse services 7.1.4 Security and Privacy aspects of mobile metaverse services 7.1.5 Digital Asset Management 7.1.6 Charging requirements for mobile metaverse services
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7 Consolidated potential requirements and KPIs p. 81

7.1 Consolidated potential requirements p. 81

7.1.1 Localized Mobile Metaverse Service Functionality p. 81

Table 7.1.1-1: Localized Mobile Metaverse Service Functionality Consolidated Requirements

CPR #	Consolidated Potential Requirement	Original PR #	Comment
[CPR 1.1]	Subject to operator policy, the 5G system shall provide a means to define and expose to an authorized third party a spatial anchor, i.e. an association between a physical location (a point or volume in three dimensional space) and service information. NOTE: Service information can include information to enable users to discover and access services, e.g. type of service, URLs, configuration data, the distance between the user and the spatial anchor, etc.	[PR 5.1.6-1] [PR 5.1.6-2] [PR 5.1.6-3] [PR 5.4.6-2] [PR 5.4.6-3]
[CPR 1.2]	Subject to operator policy, the 5G system shall enable an authorized third party to request the information associated with a specific spatial anchor. NOTE: How the service and location information is used by the third party to access a mobile metaverse server and the AR media itself is out of scope of this requirement.	[PR 5.4.6-4]
[CPR 1.3]	Subject to operator policy, the 5G system shall provide an authorized third party a means to define authorization to access spatial anchor information and to manage the spatial anchor(s), e.g. add, remove or modify spatial anchors.	[PR 5.4.6-5]
[CPR 1.4]	Subject to operator policy, regulatory requirements and user consent, the 5G system shall provide a means for a UE to provide sensor data, (e.g. from UE sensors, cameras, etc.) to the network in order to derive localization information, e.g. to produce or modify a spatial map or discover or find spatial anchors. The 5G system shall enable an authorized third party to obtain all of the spatial anchors located in a given three-dimensional area. NOTE: How an authorized third party identifies which three-dimensional area to request spatial anchors in is not in scope of the 3GPP standard. Spatial localization and mapping information could be used to identify areas of interest.	[PR 5.5.6.1-1] [PR 5.5.6.1-2] [PR 5.5.6.2-2] [PR 5.5.6.2-3] [PR 5.4.6-3]
[CPR 1.5]	Subject to operator policy and regulatory requirements, the 5G system shall support mechanisms to expose a spatial map or derived localization information to authorized third parties.	[PR 5.5.6.1-3]
[CPR 1.6]	Subject to operator policy, regulatory requirements and user consent, the 5G System shall be able to process and expose information related to a UE's location and direction of orientation to authorized third parties. NOTE: This requirement does not affect the ability of regulatory services, e.g., legal intercept service, to access required information without consent of the user.	[PR 5.19.6-1]

7.1.2 Digital representation of users and avatar functionality p. 82

Table 7.1.2-1: Digital representation of users and avatar functionality Consolidated Requirements

CPR #	Consolidated Potential Requirement	Original PR #	Comment
[CPR 2.1]	The 5G system shall support 5G CN to provide real-time feedback in support of conversational XR communication among multiple users simultaneously. NOTE: The feedback can include information such as network condition, achieved QoS. Such information can be used by the IMS, for example, to trigger the codec negotiation.	[PR 5.3.6.2-1]
[CPR 2.2]	Subject to user consent, the 5G system (including IMS) shall support multimedia conversational communications between two or more users including transfer of real time avatar media and audio media. NOTE 1: Avatar media can be transmitted on both uplink and downlink. NOTE 2: Confidentiality of the data used to produce the avatar (e.g. from the UE cameras, etc.) is assumed.	[PR 5.11.6-1] [PR 5.22.6-1] [PR 5.11.6-2] [PR 5.11.6-3] [PR 5.7.6-3]
[CPR 2.3]	Subject to user consent, the 5G system (including IMS) shall support change of media types between video and avatar media for parties of a multimedia conversational communication.	[PR 5.11.6-4]
[CPR 2.4]	The 5G system (including IMS) shall support transcoding between media such as text, GTT, video and avatar media in multimedia conversational communications. NOTE 1: Text, video or other media could allow a party to control the appearance of its avatar, e.g. to express behaviour, movement, affect, emotions, etc. NOTE 2: The transcoding of media enables avatar communication, e.g. in scenarios in which UE participating in an IMS call or other service does not support e.g. FACS, encoding avatar media, generating avatar media, etc.	[PR 5.11.6-5] [PR 5.26.6-2] [PR 5.26.6-3] [PR 5.26.6-4]
[CPR 2.5]	Subject to operator policy, regulatory requirements, and user consent, the 5G system (including IMS) shall support the capabilities of rendering the avatar based on the body movement information (e.g. body motion or facial expression) of a human user.	[PR 5.16.6.2-6]
[CPR 2.6]	The 5G system (including IMS) shall support the encoding of sensor data capturing the facial expression and movement and gestures of a person, in a standard form. NOTE: The actual transmission and rendering of facial expression and movement and gestures of a person within a multimedia conversational communication is subject to that person's consent.	[PR 5.26.6-1] [PR 5.16.6.2-5] [PR 5.16.6.2-6]
[CPR 2.7]	The 5G system (including IMS) shall support compensating for the end-to-end communication latency between the users and/or objects involved in a multimedia conversational communication prior/during rendering the digital representation (e.g. avatar) of the users and/or objects involved (e.g. by using a predictive digital representation model).	[PR 5.9.6.3] [PR 5.9.6.4]
[CPR 2.8]	Subject to operator policy and regulatory requirements, the 5G system shall support mechanisms to uniquely identify an avatar and associate the avatar with a subscriber and to expose this association to authorized third parties.	[PR 5.18.6-1] [PR 5.24.6-1]

7.1.3 Operational efficiency, exposure, and coordination of mobile metaverse services p. 84

Table 7.1.3-1: Operational efficiency, exposure, and coordination of mobile metaverse services Consolidated Requirements

CPR #	Consolidated Potential Requirement	Original PR #	Comment
[CPR 3.1]	Subject to operator policy, the 5G system shall support a mechanism that enables flexible adjustment of communication services based on e.g. the type of devices (e.g., wearables), or communication duration (e.g. more than one hour), such that the services can be operated with reduced energy utilization. NOTE: Metaverse service experience over an extended period of time (e.g. 2h) requires significant power consumption by the UE. In some cases, a device with no external power supply cannot sustain downloading and rendering of media over a long interval, e.g. for the duration of an entire feature film or athletic event.	[PR 5.7.6-1] [PR 5.7.6-2]
[CPR 3.2]	The 5G system shall be able to provide a means to associate and coordinate data flows related to one or multiple UEs e.g. associated with the same object in digital twin applications provided by the mobile metaverse service.	[PR 5.20.6-1] [PR 5.20.6-2] [PR 5.20.6-3]
[CPR 3.3]	Subject to operator policy, regulatory requirements and user consent, the 5G system (including IMS) shall be able to expose network performance information (e.g., observed or predicted bitrate, latency or packet loss) related to one or more users to an authorized third party metaverse application. NOTE: The network performance information can be per UE and take into account all available access network types, i.e. 3GPP and non-3GPP.	[PR 5.25.6-1] [PR 5.9.6-2]	The addition was motivated by the change in 22.856 CR0007.
[CPR 3.4]	Subject to operator policy, the 5G system (including IMS) shall support a mechanism, including enabling one or more authorized third party(ies), to coordinate multiple service data flows of a single mobile metaverse service delivered to/from one or more UE(s). Multiple UEs may be associated with one user/location or different users at different locations potentially using different access networks, i.e. 3GPP and non-3GPP. NOTE 1: Coordination refers to the ability to provide an acceptable level of user experience for a given service, e.g. based on latency and synchronization constraints (due to multiple sources or long distance between UEs/users). This can be based on a quantitative bound. NOTE 2: It is not assumed that it is always possible to coordinate and provide the same capabilities regardless of whether 3GPP or non-3GPP access is used.	[PR 5.27.6-3] [PR 5.9.6-1] [PR 5.3.6.2-3] [PR 5.25.6-2] [PR 5.10.6-1] [PR 5.12.6-1]	The addition was motivated by the change in 22.856 CR0007.
[CPR 3.5]	The 5G system shall enable the coordination of diverse media, transmitted to a UE from one or more mobile metaverse services associated with a physical location, to be combined to form a localized service experience.	[PR 5.1.6-4] [PR 5.4.6-1]
[CPR 3.6]	Subject to operator policy, the 5G system shall support exposure mechanisms enabling an authorized third party to determine one or more subscribers to whom mobile metaverse media can be distributed in a resource efficient manner.	[PR 5.27.6-1]
[CPR 3.7]	Subject to operator policy and user consent, the 5G system shall support a means to provide resource efficient communication of third party mobile metaverse media to one or more subscribers.	[PR 5.27.6-2]
[CPR 3.8]	The 5G system shall provide a mechanism to maintain consistent user experience, for a given UE, when XR media from different mobile metaverse services have different communication performance, e.g., resolution, latency or packet loss.	[PR 5.8.6-1] [PR 5.27.6-5]

7.1.4 Security and Privacy aspects of mobile metaverse services p. 85

Table 7.1.4-1: Security and Privacy aspects of mobile metaverse services Consolidated Requirements

CPR #	Consolidated Potential Requirement	Original PR #	Comment
[CPR 4.1]	Subject to operator policies, regulatory requirements and user consent, the 5G system shall be able to support mechanisms to expose to a trusted third party (e.g. the conference focus) the result of the UE authenticating the user. NOTE: How a UE authenticates the user's identity at the terminal equipment, e.g. using biometrics, is out of scope of the present document.	[PR 5.3.6.2-2]
[CPR 4.2]	Subject to operator policy, regulatory requirements and user consent, the 5GS shall support mechanisms to authorize Spatial Localization Service.	[PR 5.5.6.2-1]
[CPR 4.3]	Subject to operator policy, regulatory requirements and user consent, the 5G system shall be able to authorize the avatar to be used in mobile metaverse services.	[PR 5.24.6-2]
[CPR 4.4]	Subject to operator policy, regulatory requirements and user consent, the 5G system shall provide time-bound authorization for specified subscribers to use an avatar in mobile metaverse services.	[PR 5.24.6-3] [PR 5.24.6-4] [PR 5.24.6-5]
[CPR 4.5]	Subject to operator policy, regulatory requirements and user consent, the 5G system shall be able to identify the subscriber who has the right to use an avatar in mobile metaverse services.	[PR 5.24.6-5]
[CPR 4.6]	Subject to operator policy, regulatory requirements and subscriber consent, the 5G system shall provide a means to temporarily authorize a third party to use a subscriber's digital representation and access specific multimedia communication services on behalf of the subscriber, including not by means of a UE, with restrictive conditions e.g., authorized list of parties.	[PR 5.17.6-1]

7.1.5 Digital Asset Management p. 86

Table 7.1.5-1: Digital Asset Management Consolidated Requirements

CPR #	Consolidated Potential Requirement	Original PR #	Comment
[CPR 5.1]	Subject to operator policy, regulatory requirements and user consent, the 5G system shall be able to provide functionality to store digital assets associated with a user, and to remove such digital assets associated with a user.	[PR 5.13.6-1] [PR 5.15.6-1] [PR 5.16.6.2-1]
[CPR 5.2]	Subject to operator policy, regulatory requirements and user consent, the 5G system shall provide a means to allow a user to securely access and update their digital assets.	[PR 5.13.6-1] [PR 5.15.6-1] [PR 5.16.6.2-1]
[CPR 5.3]	Subject to user consent, the 5G system shall be able to allow a trusted third party to retrieve the digital asset(s) associated with a user, e.g. when the user accesses a specific application. NOTE: When a user accesses an immersive mobile metaverse service, the authorized third party (service provider) could obtain relevant digital assets of a user associated with that service.	[PR 5.13.6-2] [PR 5.13.6-3] [PR 5.14.6-1] [PR 5.15.6-2]
[CPR 5.4]	Subject to operator requirements and regulatory requirements, the 5G system shall provide secure means to authorize the use of digital assets associated with a user (e.g. digital assets belonging to a third party customer).	[PR 5.16.6.2-2] [PR 5.13.6-5] [PR 5.15.6-3]
[CPR 5.5]	The 5G system shall provide mechanisms to certify the authenticity of the digital assets associated with a user.	[PR 5.13.6-4]
[CPR 5.6]	The 5G system shall be able to associate a stored digital asset with one or more User Identities.	[PR 5.28.6-1]
[CPR 5.7]	Subject to operator policy, regulatory requirements and user consent, the 5G system shall support a mechanism for users to define conditions (e.g. based on user location information) to restrict the access to, and management of, stored digital assets associated with User Identity.	[PR 5.28.6-2]
[CPR 5.8]	The 5G system shall support mechanisms to request specific formats of stored digital assets associated with a user by an authorized mobile metaverse service. NOTE: The main use case considered during development of this requirement was that stored digital assets such as avatar representation can be provided at different levels of graphical accuracy.	[PR 5.14.6-2]

7.1.6 Charging requirements for mobile metaverse services p. 86

Table 7.1.6-1: Consolidated Requirements on charging for mobile metaverse services

CPR #	Consolidated Potential Requirement	Original PR #	Comment
[CPR 6.1]	The 5G system shall be able to collect charging information for the actions related to spatial anchors, where a third party creates, deletes or modifies a spatial anchor or associated service information. NOTE: It is assumed that exposure of network anchors and associated service information can be a service provided by a network operator to third parties.	[PR 5.4.6-6] [PR 5.4.6-7]
[CPR 6.2]	The 5G system shall support the collection of charging information associated with the exposure of a spatial map or derived localization information to authorized third parties.	[PR 5.5.6.1-4]
[CPR 6.3]	The 5G system shall support the collection of charging information associated with the production or modification of a spatial map on behalf of an authorized third party.	[PR 5.5.6.1-5]
[CPR 6.4]	The 5G system shall support the collection of charging information associated with exposing spatial location service information to authorized third parties.	[PR 5.5.6.2-4]
[CPR 6.5]	The 5G system shall support collection of charging information associated with initiating and terminating avatar call.	[PR 5.11.6-6] [PR 5.17.6-2]
[CPR 6.6]	The 5G system shall be able to collect charging information for transcoding services associated with avatar call.	[PR 5.26.6-5]
[CPR 6.7]	The 5G system shall be able to collect charging information associated with distribution of third party mobile metaverse media to one or more subscribers.	[PR 5.27.6.4]
[CPR 6.8]	The 5G system shall be able to collect charging information per UE or per application, related to the use of digital assets associated with a user (e.g. typically a human user with a certain subscription).	[PR 5.16.6.2-3] [PR 5.16.6.2-4] [PR 5.17.6-2]
[CPR 6.9]	The 5G system shall be able to collect charging information per UE for managing the digital assets associated with a user (e.g. typically a human user with a certain subscription) or a third party. NOTE: A third party who has digital assets could be an enterprise customer having service level agreement with the operator.	[PR 5.16.6.2-3]