Encrypted 3D Avatar Preloading for Faster XR Session Start
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Solution Overview
Problem
Existing user representation techniques in extended reality (XR) environments suffer from noticeable delays during communication sessions due to large 3D avatar data sizes and inefficient data handling.
Innovation Solution
Pre-downloading encrypted 3D assets of users based on various factors, such as contact lists and previous communication sessions, and dynamically modifying bandwidth allocation between data streams to enhance the quality of user representations during live sessions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If 3D avatar data is downloaded during communication session initiation, then user representation quality is improved, but noticeable delays occur
Solution Approach 1:
The system pre-downloads 3D avatar assets to local storage before communication sessions begin, using triggers such as contact list access, scheduled events, or push notifications. This preliminary action ensures that when a session is initiated, the avatar data is already available locally, eliminating download delays and providing immediate high-quality user representations.
2Manufacturing precision
If 3D asset data size is increased for better quality, then user representation quality is improved, but download time and bandwidth consumption increase
Solution Approach 1:
High-quality 3D avatar assets are downloaded and stored in advance before communication sessions, when network conditions may be more favorable and user attention is not focused on session initiation speed. This allows the system to use larger, higher-quality asset files without impacting the perceived performance during actual communication.
Solution Approach 2:
The system creates and stores local copies of 3D avatar assets from remote sources. These copied assets are cached in local storage, allowing the device to use high-quality representations without repeatedly downloading the same data during sessions. The copy mechanism enables quality preservation while reducing repeated download overhead.
3Speed
If pre-downloading is performed to reduce delays, then session initiation speed is improved, but user privacy risks increase
Solution Approach 1:
Avatar assets are pre-downloaded only after obtaining user consent through privacy settings and permissions. The system establishes trust boundaries by allowing users to control which contacts can have their avatars cached, for how long, and under what conditions (e.g., scheduled events vs. ad-hoc calls). This consent-based preliminary action enables speed improvement while maintaining privacy control.
Solution Approach 2:
Pre-downloaded avatar assets are treated as temporary cached objects with limited lifetimes and scope. The system implements asset expiration policies where cached avatars are automatically removed after certain periods or after specific events. This disposable approach to cached data minimizes privacy risks by ensuring that pre-downloaded assets do not persist indefinitely beyond their intended use.
4Manufacturing precision
If multiple data streams are allocated for 3D asset delivery, then user representation quality is improved, but bandwidth consumption increases
Solution Approach 1:
The system segments 3D avatar asset data into multiple components such as geometry data, texture data, animation data, and metadata. Each segment can be independently managed, cached, and transmitted. This segmentation allows the system to prioritize critical segments for local caching while using bandwidth-efficient methods for less critical data, improving quality without proportionally increasing overall bandwidth consumption.
Solution Approach 2:
Critical 3D asset data segments are copied to local storage for repeated use across multiple sessions. Instead of repeatedly transmitting the same avatar geometry and base textures over the network, the system caches these copies locally and only transmits incremental updates or variations when needed. This copying strategy significantly reduces redundant bandwidth consumption while maintaining high user representation quality.
Data Source
AI summary
Various implementations provide a method for receiving and decrypting an asset to provide a view of a three-dimensional (3D) representation of another based on the asset. For example, a method may include prior to a communication session with a second device, receiving, from an information system (e.g., a communication session server), an encrypted asset (e.g., a 3D avatar or data associated with the 3D avatar) associated with a 3D representation of a second user. The method may further include in response to determining to initiate the communication session with the second user (e.g., on a second device), obtaining an encryption key from the information system. The method may further include providing a view of the 3D representation of the second user during the communication session based on decrypting the asset using the encryption key, the 3D representation of the second user being generated based at least on the asset.