XR CDRX Active-Time Assistance for Uplink Media Timing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing connected mode discontinuous reception (CDRX) configurations for extended reality (XR) applications, leading to issues such as timing mismatches, jitter, frame size discrepancies, and UL/DL coordination, which result in suboptimal power consumption and performance.
Innovation Solution
A wireless transmit/receive unit (WTRU) extends the CDRX active time duration based on uplink extended reality media (XRM) data properties, sends assistance information to the network node, and receives confirmation for optimized CDRX configurations, allowing the network node to adjust uplink and downlink packet delay budgets (PDB) values to align with XR traffic characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If CDRX active time duration is extended to accommodate XR data transmission, then data transmission reliability is improved, but power consumption increases
Solution Approach 1:
The patent applies dynamics by making the CDRX active time duration adjustable rather than fixed. The network node dynamically modifies the active time duration based on real-time XR traffic characteristics, packet delay budgets, and quality of service requirements. This allows the system to extend active time only when necessary for reliable XR data transmission, while maintaining shorter active times during low-activity periods, thereby balancing reliability and power consumption.
Solution Approach 2:
The patent implements parameter changes by modifying the CDRX active time duration parameter based on XR traffic conditions. The network node adjusts this parameter dynamically according to packet delay budgets, quality of service flows, and traffic patterns. This parameter adjustment enables the system to optimize between transmission reliability and energy efficiency by extending active time only when XR data transmission requires it.
2Productivity
If CDRX configuration is optimized for XR applications, then transmission performance is improved, but system complexity increases
Solution Approach 1:
The patent applies feedback by implementing a mechanism where the network node receives assistance information from the WTRU about XR traffic characteristics and packet delay budgets. Based on this feedback, the network node adjusts CDRX configurations to optimize transmission performance. The feedback loop continues as the network monitors transmission quality and modifies parameters accordingly, enabling performance optimization without requiring complex manual configuration.
Solution Approach 2:
The patent implements self-service by enabling the WTRU to autonomously provide assistance information to the network node about its XR traffic requirements. The WTRU self-configures by sending information about packet delay budgets and quality of service needs, allowing the network to automatically adjust CDRX parameters. This reduces the need for complex centralized control and manual optimization.
3Loss of time
If CDRX active time is extended to reduce latency for XR data, then latency is improved, but power savings are reduced
Solution Approach 1:
The patent applies dynamics by making the CDRX active time duration adaptable rather than static. The network node dynamically adjusts the active time based on real-time XR latency requirements and traffic conditions. When low latency is critical, the active time is extended; when latency requirements are met with shorter durations, the active time is reduced to maximize power savings. This dynamic adjustment resolves the contradiction between latency reduction and power savings.
Solution Approach 2:
The patent implements preliminary action by having the WTRU provide advance assistance information about its XR traffic characteristics and packet delay budgets to the network node. This allows the network to pre-configize CDRX parameters in anticipation of data transmission needs, optimizing the balance between latency and power consumption before actual data transmission occurs.
Data Source
AI summary
Systems, methods, and instrumentalities are described herein for assistance to radio area networks (RAN's) for extended Reality (XR) applications. A wireless transmit/receive unit (WTRU) may be configured to receive a configuration message from a network node. The configuration message may indicate a connected mode discontinuous reception (CDRX) active time duration and may indicate that the CDRX active time duration can be extended, determine uplink extended reality media (XRM) data to be sent to the network node. The WTRU may determine a length of time for extending the CDRX active time duration based on a property of the uplink XRM data. The WTRU may send assistance information to the network node. The assistance information may indicate a request to extend the CDRX active time duration by the length of time.