Radio Aware Codec Rate Adaptation in User Equipment
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Solution Overview
Problem
Current wireless communication systems face challenges in adapting codec rates effectively during transition states, such as radio reconfigurations or handovers, leading to reduced service quality due to radio unaware adaptations that lower codec rates unnecessarily, especially in dynamic radio environments like 5G and non-terrestrial networks.
Innovation Solution
Implementing radio aware codec rate adaptation techniques in user equipment (UE) that identify whether it is in a steady or transition state, pausing or modifying codec rate determination during transitions, and resuming or adjusting based on steady-state conditions to maintain optimal quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If codec rate adaptation is performed continuously based on radio throughput, then responsiveness to radio conditions is improved, but service quality deteriorates during transition states due to unnecessary rate reductions
Solution Approach 1:
The system dynamically adjusts the codec rate determination process based on the detected radio state. During steady states, continuous adaptation maintains responsiveness, while during transition states, the determination is paused to prevent quality degradation. This dynamic switching between adaptation modes resolves the contradiction between responsiveness and reliability.
Solution Approach 2:
The system implements feedback by continuously monitoring radio state indicators (such as RRC state, handover status, reconfiguration events) and using this information to control the codec rate adaptation process. The feedback mechanism enables the system to distinguish between steady and transition states, allowing it to activate or pause adaptation accordingly, thus maintaining both responsiveness and service quality.
2Reliability
If codec rate adaptation is paused during transition states, then service quality is maintained, but responsiveness to radio throughput changes is reduced
Solution Approach 1:
The system dynamically controls the codec rate determination process by detecting transition states (through RRC state changes, handover detection, reconfiguration event monitoring) and pausing adaptation only during these specific periods. This selective pausing maintains service quality during transitions while preserving responsiveness during steady states, resolving the contradiction between reliability and speed.
3Adaptability or versatility
If network-based codec rate adaptation is used, then centralized control is achieved, but implementation complexity and latency increase
Solution Approach 1:
The UE autonomously performs codec rate adaptation by independently detecting its own radio state (RRC state, handover status, reconfiguration events) and making adaptation decisions locally. This self-service approach eliminates the need for complex network-based control mechanisms, reducing implementation complexity and latency while maintaining effective centralized-like control through autonomous decision-making.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may identify radio access technology (RAT) state information associated with the UE, the RAT state information including an indication of whether the UE is operating in a steady state or is operating in a transition state. The UE may adapt a codec rate associated with an application of the UE based at least in part on whether the UE is operating in the steady state or is operating in the transition state. Numerous other aspects are provided.