Wireless Multilink Device Reconfiguration for Latency Reduction
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Solution Overview
Problem
Current systems for artificial reality, such as VR, AR, and MR, face challenges in reducing latency and maintaining a seamless user experience due to latency issues that can cause judder and motion sickness, particularly in head-wearable displays where image rendering and user movement synchronization is critical.
Innovation Solution
A wireless multilink device (MLD) system that enables adaptive multi-link reconfiguration, allowing for adding, removing, or switching links between MLDs while maintaining connection through at least one link, to optimize communication resources and reduce latency by dynamically managing channel access based on utilization and priority.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If multi-link reconfiguration is performed to optimize communication resources and reduce latency, then latency is reduced and user experience is enhanced, but connection stability may be compromised during the reconfiguration process
Solution Approach 1:
The system performs preliminary actions by establishing a target link before breaking the source link during multi-link reconfiguration. This ensures that the connection path is prepared in advance, allowing seamless transition without interrupting data transmission, thus reducing latency while maintaining connection stability.
Solution Approach 2:
The patent implements beforehand cushioning by maintaining redundant links during the reconfiguration process. The source link remains active until the target link is fully established and verified, providing a buffer that prevents connection drops and ensures continuous stable communication while optimizing resource allocation.
2Productivity
If links are dynamically added or removed to optimize communication resources, then resource efficiency is improved, but system complexity increases
Solution Approach 1:
The system applies dynamics by enabling flexible addition and removal of communication links based on real-time conditions such as signal quality, traffic load, and resource availability. This dynamic adaptation optimizes resource efficiency while the automated management algorithms keep system complexity under control by making decisions based on predefined criteria and current state.
Solution Approach 2:
The multi-link system implements self-service through automated link management where the system autonomously adds, removes, or switches links based on performance metrics and resource conditions. This self-managing capability improves resource efficiency without requiring complex external control, as the system handles its own optimization using embedded decision-making logic.
3Speed
If link switching is performed to reduce latency, then response time is improved, but the risk of connection interruption increases
Solution Approach 1:
The system performs preliminary action by pre-establishing the target link before switching from the source link. This ensures that the new connection path is ready and verified in advance, enabling fast switching with minimal interruption. The response time is improved because the transition is prepared beforehand, while connection interruption risk is reduced because the target link is already operational.
Solution Approach 2:
The patent uses an intermediary approach by maintaining the source link active during the switching process until the target link is fully established. This intermediary state acts as a bridge, ensuring continuous connectivity while enabling fast switching. The response time is improved through efficient switching mechanisms, while connection interruption is prevented by the overlapping operation of source and target links during transition.
Data Source
AI summary
Disclosed herein includes A first wireless multilink device (MLD) including a transceiver configured to send, to a second wireless MLD, a request for multi-link reconfiguration. The transceiver may be configured to receive, from the second wireless MLD, a response to the request for the multi-link reconfiguration. The multi-link reconfiguration may include configuring to implement at least one of: adding a link, removing a link or switching one end of a link, between the first wireless MLD and the second wireless MLD. The first wireless MLD and the second wireless MLD may maintain connection via at least one link during the multi-link reconfiguration.