Multi-Flow XR Semi-Persistent Scheduling for Selective Decoding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing the power consumption and latency requirements of extended reality (XR) applications with multiple interdependent flows, such as virtual reality (VR), augmented reality (AR), and mixed reality (MR), due to quasi-periodic traffic with high data rates and strict packet delay budgets, leading to inefficient decoding and increased processor load.
Innovation Solution
Implementing semi-persistent scheduling (SPS) configurations for different sensory channels in XR communications, where a failure to receive data on one channel temporarily disables decoding on associated channels, optimizing power usage and reducing processor load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If semi-persistent scheduling is implemented for multiple independent XR flows, then power consumption is reduced and processor load is decreased, but decoding efficiency deteriorates when data from all flows is not available
Solution Approach 1:
The patent merges multiple independent SPS configurations into a unified structure with a common counter and association relationships. When one flow fails to receive data, the counter is not incremented, which prevents other associated flows from decoding their data, thereby avoiding wasted processing energy on incomplete XR experiences while maintaining efficient power usage.
Solution Approach 2:
The patent implements a feedback mechanism where the reception status of each SPS configuration is monitored and fed back to the counter increment logic. If any associated flow fails to receive data, the counter remains unchanged, which triggers a wait state that prevents premature decoding attempts, thus optimizing the balance between power consumption and decoding efficiency.
2Power
If semi-persistent scheduling is implemented for multiple XR flows, then processor load is reduced through selective decoding, but system complexity increases due to configuration management
Solution Approach 1:
The patent creates a universal counter structure that serves multiple SPS configurations simultaneously. This single counter manages the decoding state for all associated flows, reducing the need for separate state tracking mechanisms for each flow and thereby simplifying overall system complexity while maintaining low processor load.
Solution Approach 2:
The patent pre-establishes association relationships between SPS configurations during setup, defining which flows are linked through common counters. This preliminary configuration allows the system to automatically manage decoding states without real-time complex decision-making, reducing both processor load and operational complexity.
3Reliability
If decoding is performed on all SPS configurations independently, then data reception reliability is maintained, but power consumption increases due to unnecessary decoding operations
Solution Approach 1:
The patent extracts the decoding operation from being independently performed on each SPS configuration and instead gates it through a shared counter mechanism. The counter acts as a control gate that enables or disables decoding based on the reception status of all associated flows, eliminating unnecessary decoding operations and reducing power consumption while maintaining reliability through coordinated state management.
Solution Approach 2:
The system uses the reception status information from each SPS configuration to automatically control the counter and subsequent decoding operations. The counter self-adjusts its increment behavior based on whether all associated flows have successfully received data, enabling the system to autonomously optimize power consumption without external intervention while preserving data reception reliability.
Data Source
AI summary
Various aspects of the present disclosure relate to a method for wireless communication that includes receiving a first downlink semi-persistent scheduling configuration over radio resource control signaling, wherein the first semi-persistent scheduling configuration includes a set of identifiers that identify at least one other downlink semi-persistent scheduling configuration associated with the first downlink semi-persistent scheduling configuration. User equipment may use the scheduling configuration to temporarily disable decoding semi-persistent scheduling occasions associated with a failed occasion.