UE Logical Channel Multiplexing for Multi-Modal VR Synchronization
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Solution Overview
Problem
Existing radio access networks (RAN) lack the ability to support multi-modal synchronization for immersive multi-modal virtual reality applications, leading to asynchrony between different media components and negatively impacting user perception due to unsuitable logical channel prioritization.
Innovation Solution
Enhanced logical channel prioritization (LCP) and multiplexing methods are implemented in user equipment (UE) to ensure multi-modal synchronization by using multi-modal service identifiers (MMSIDs) for prioritizing and multiplexing data flows, ensuring they meet synchronization thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional logical channel prioritization is used, then transmission efficiency is maintained, but multi-modal synchronization cannot be achieved
Solution Approach 1:
The patent introduces a new parameter (multi-modal service identifier) into the logical channel prioritization process. This parameter enables the system to distinguish between different types of data flows and apply appropriate prioritization rules, thereby achieving multi-modal synchronization without fundamentally changing the existing LCP mechanism.
Solution Approach 2:
The patent segments the data transmission process by introducing multi-modal service identifiers that categorize different data flows. This segmentation allows the system to apply different prioritization strategies to different segments (data flows), enabling precise control over synchronization while maintaining overall system efficiency.
2Measurement precision
If data flows are transmitted via separate logical channels, then channel independence is maintained, but synchronization precision deteriorates
Solution Approach 1:
The patent merges multiple data flows that share the same multi-modal service identifier into a single multiplexed transmission stream. This combining approach allows the system to maintain synchronization precision by treating related data flows as a unified entity, while still leveraging the independence of underlying logical channels for flexible resource allocation.
Data Source
AI summary
A method of multi-modal synchronization and a user equipment are provided. The method includes: obtaining a first data flow to be transmitted via a first logical channel and a second data flow to be transmitted via a second logical channel; receiving an uplink grant and performing logical channel prioritization to select the first data flow; determining whether a first multi-modal service identifier of the first logical channel and a second multi-modal service identifier of the second logical channel are the same; and in response to the second multi-modal service identifier being the same as the first multi-modal service identifier, performing multiplexing for the first data flow and the second data flow.