PDU Set Mapping for XR QoS Prioritization
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Solution Overview
Problem
Existing XR communication systems face challenges in maintaining quality of service (QoS) due to factors like size, weight, and power constraints, leading to issues with data prioritization and latency, resulting in discarded data that affects the overall XR experience.
Innovation Solution
The system maps protocol data unit (PDU) sets to communication channels based on importance metrics, allowing for selective prioritization and allocation to radio link control (RLC) or logical channel (LCH) entities, ensuring that critical data is transmitted with higher priority and reducing data discard rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If data prioritization is controlled to reflect usage importance, then power consumption and device size can be reduced, but quality of service and latency are affected
Solution Approach 1:
The patent applies local quality by assigning different priority levels to different PDU types based on their specific usage requirements. Critical PDU types (e.g., eye tracking data, hand tracking data, controller data) are assigned higher priorities and mapped to specific communication channels with appropriate QoS parameters, while less critical PDU types are assigned lower priorities. This selective prioritization ensures that power consumption is optimized without compromising the quality of service for critical XR data transmissions.
2Productivity
If data is transmitted according to periodic schedule, then frame rate is maintained, but data is discarded after useful time expires affecting quality of service
Solution Approach 1:
The patent implements preliminary action by pre-configuring priority mappings and QoS parameters for different PDU types before transmission. The system预先 establishes the mapping between PDU types and communication channels with appropriate priority levels, ensuring that critical data is immediately transmitted with high priority when available, rather than waiting for periodic scheduling. This prevents data discard and maintains quality of service while achieving smooth frame rates.
3Productivity
If multiple PDU sets are mapped to same QoS flows, then communication efficiency is improved, but data prioritization based on importance is reduced
Solution Approach 1:
The patent applies segmentation by dividing PDU sets into distinct groups based on their priority levels and mapping them to different QoS flows and communication channels. Instead of mapping all PDU sets to the same channel, the system segments them into multiple channels with different QoS parameters, ensuring that critical PDU types receive appropriate prioritization while maintaining overall communication efficiency through organized data flow management.
Data Source
AI summary
Disclosed herein are aspects related to a device that can include a wireless communication interface and one or more processors. The one or more processors can assign a first protocol data unit (PDU) set and a second PDU set to at least one of a quality of service (QoS) flow or a data radio bearer (DRB). The one or more processors can identify a first metric of the first PDU set and a second metric of the second PDU set. The one or more processors can determine, based at least on the first metric and the second metric, one or more entities for communication of the first PDU set and the second PDU set to a remote device. The one or more processors can cause the wireless communications interface to communicate the first PDU set and the second PDU set from the at least one of the QoS flow or the DRB according to the determination.


