Tethering Equipment Packet Prioritization for Low-Latency XR Signals
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Solution Overview
Problem
Signal transmission delay and interference in extended reality (XR) services cause issues like lag and motion sickness due to low SNR, crowding, and handover events, particularly affecting control signal packets when connected to cellular networks.
Innovation Solution
Prioritize control signal packets by determining their sizes and designating specific ranges for higher transmission priority in tethering equipment, using methods like Wi-Fi, Bluetooth, and 5G sidelink to reduce latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control signal packets are transmitted without prioritization in cellular networks, then all data packets are treated equally, but transmission delay and interference increase causing lag and motion sickness
Solution Approach 1:
The patent applies local quality by differentiating transmission priorities based on packet type. Control signal packets (small size, ranging from 50-200 bytes) are assigned high priority for immediate transmission, while large video packets are assigned lower priority. This selective quality assignment ensures that critical control signals experience minimal delay and interference, directly resolving the contradiction between transmission reliability and delay.
Solution Approach 2:
The system implements feedback mechanisms where the tethering equipment continuously monitors packet sizes, identifies control signal packets based on their characteristic small size, and dynamically adjusts transmission priorities. This feedback loop ensures that control packets are consistently prioritized, maintaining low latency and high reliability even in varying network conditions.
2Productivity
If small control signal packets are transmitted alongside large video packets in cellular networks, then network resources are shared, but control packets experience heavy interference and low SNR
Solution Approach 1:
The patent segments network traffic into different priority categories based on packet size characteristics. Control signal packets (50-200 bytes) are separated from large video packets and assigned to high-priority transmission queues. This segmentation isolates control packets from interference caused by large packet transmissions, maintaining high SNR while preserving overall network productivity through efficient resource allocation.
3Reliability
If packet prioritization is implemented based on size ranges, then control signal packets can be identified and prioritized, but system complexity increases due to packet size determination and designation
Solution Approach 1:
The patent simplifies packet identification by using packet size as a key parameter to distinguish control signal packets from video packets. By establishing clear size thresholds (50-200 bytes for control packets), the system avoids complex deep packet inspection while maintaining reliable identification. This parameter-based approach reduces device complexity while ensuring accurate prioritization of control signals.
Data Source
AI summary
A method of wireless signal transmission management includes transmitting a plurality of data packets to tethering equipment from user equipment to tethering equipment, determining a size of each of the plurality of data packets by the tethering equipment, designating data packets of the plurality of data packets having a specific range of sizes as control signal packets by the tethering equipment, and prioritizing in transmitting the control signal packets to a cellular network by the tethering equipment.