Extended Reality Transmission Adaptation Across ADU Time Domains
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Solution Overview
Problem
Existing wireless communication systems struggle to dynamically adapt HARQ feedback, repetition, and modulation and coding scheme (MCS) configurations within application data units (ADUs) for extended reality transmissions, failing to account for changing channel conditions or network/UE power considerations.
Innovation Solution
The system enables dynamic configuration of HARQ feedback, repetition, and MCS for transmissions within ADUs by communicating control signaling that sets multiple transmission configurations for different time domain durations, including the number of repetitions and activation/deactivation of HARQ processes, using redundancy version identifiers, and indicating parameters like MCS for each transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dynamic configuration of HARQ feedback, repetition, and MCS is implemented for transmissions within ADUs, then reliability of extended reality transmissions is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic configuration of transmission parameters (HARQ feedback, repetition, MCS) within ADUs by introducing a configuration indicator that points to different transmission configurations. Each configuration specifies different numbers of repetitions and HARQ feedback settings for different time domains within an ADU, allowing the system to adapt transmission reliability to changing channel conditions without fixed static settings.
Solution Approach 2:
The patent changes transmission parameters (number of repetitions, HARQ feedback activation, MCS) dynamically within an ADU based on channel conditions. The configuration indicator enables switching between different parameter sets, where each set defines specific repetition counts and HARQ feedback settings for different time domains, optimizing reliability for extended reality transmissions.
2Adaptability or versatility
If multiple transmission configurations with different repetition numbers are used for different time domain durations, then adaptability to changing channel conditions is improved, but control signaling overhead increases
Solution Approach 1:
The patent segments an ADU into multiple time domains, each associated with a specific transmission configuration. The configuration indicator divides the ADU transmission into segments with different repetition numbers and HARQ feedback settings, allowing tailored adaptation to channel conditions in each time domain while managing control overhead through structured segmentation.
Solution Approach 2:
The patent introduces dynamic adaptability by allowing the configuration indicator to point to different transmission configurations within an ADU based on channel conditions. Each configuration enables different repetition counts and HARQ feedback settings for different time domains, providing versatility to adapt to changing conditions without requiring separate ADUs for each scenario.
3Use of energy by moving object
If repetition is deactivated for some transmissions within an ADU, then power consumption is reduced, but reliability may deteriorate
Solution Approach 1:
The patent applies local quality by enabling repetition only in specific time domains within an ADU where channel conditions require enhanced reliability, while deactivating repetition in time domains with better conditions. The configuration indicator specifies different repetition numbers for different time domains, optimizing the balance between power consumption and reliability locally rather than applying a uniform setting across the entire ADU.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. Described techniques provide for dynamic configuration of feedback, repetition, and/or modulation and coding scheme(s) for transmissions within an application data unit (ADU). A user equipment (UE) and a network entity may communicate control signaling indicating transmission configurations for a set of multiple time domain durations within an ADU and a start of a first time domain duration. The transmission configurations may indicate a number of repetitions for each transmission. In some cases, the network entity may transmit control signaling that separately configures a number of repetitions for each feedback process of a set of multiple feedback processes associated with an ADU and indicates whether repetition is enabled for each feedback process and a redundancy version identifier sequence for repetitions for each feedback process. The UE and the network entity may communicate transmissions within the ADU in accordance with the control signaling.