Peripheral Device Collision Avoidance for Multi-Link Audio

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing systems face challenges in avoiding collisions between audio packets transmitted over different wireless links, leading to sporadic or continuous packet collisions that disrupt audio quality, particularly in gaming and phone link applications.

Innovation Solution

A peripheral device, such as a headset, equipped with a radio receiver and processor, predicts collisions between audio packets by analyzing transmission scheduling parameters from multiple central devices. It then requests updates to these parameters to prevent collisions, dynamically switching the audio stream transmission scheduling to ensure robust communication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If audio packets are transmitted over multiple wireless links simultaneously, then audio quality and communication robustness are improved, but packet collisions occur leading to audio disruption

Engineering Contradiction:

Improvecommunication robustnessVSAvoidpacket collisions

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The peripheral device performs preliminary analysis of transmission scheduling parameters from multiple central devices to predict potential packet collisions before they occur. By proactively identifying scheduling conflicts in the transmission timelines, the system can take preventive actions such as adjusting scheduling parameters or prioritizing critical packets, thereby avoiding collisions that would disrupt audio quality while maintaining simultaneous multi-link transmission

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements a feedback mechanism where the peripheral device continuously monitors transmission scheduling parameters from multiple central devices, predicts potential collisions, and communicates back to the central devices for scheduling adjustments. This closed-loop feedback enables dynamic optimization of transmission schedules to prevent packet collisions while maintaining robust multi-link audio transmission

Inventive Principle:

Principle #23Feedback

2Reliability

If transmission scheduling parameters are dynamically adjusted to avoid collisions, then packet collision prevention is improved, but system complexity increases

Engineering Contradiction:

Improvecollision avoidanceVSAvoidscheduling management complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The peripheral device autonomously performs collision prediction by analyzing transmission scheduling parameters from multiple central devices without requiring complex external coordination. The device uses its own processing capabilities to identify potential collisions and independently determines scheduling adjustments, eliminating the need for elaborate multi-device negotiation protocols and reducing overall system complexity while maintaining effective collision avoidance

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS20250071807A1Peripheral device directed collision avoidance

Publication Date: 2025.02.27 NXP BV

AI summary

One example discloses a peripheral device, including: a radio receiver configured to, receive a first set of audio packets transmitted over a first wireless link from a first central device, and receive a second set of audio packets transmitted over a second wireless link by the second central device; and a processor configured to predict a collision between the first set of audio packets and the second set of audio packets based on a set of transmission scheduling parameters.