Non-Integer DRX Cycles for XR/CG Traffic Alignment
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Solution Overview
Problem
Existing power saving mechanisms in wireless communication systems, such as DRX configurations, are inadequate for XR/CG services due to non-integer periodicities, variable data rates, and quasi-periodic traffic with jitter, leading to inefficiencies in power consumption and latency.
Innovation Solution
Implementing non-integer DRX cycles, dynamic PDCCH monitoring, and multiple DRX configurations to align with XR/CG traffic patterns, along with extending DRX ON periods to accommodate jitter, thereby optimizing power consumption and latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If existing DRX configurations with integer cycle values are used, then device complexity is reduced and ease of operation is maintained, but power consumption efficiency deteriorates and latency increases for XR/CG services
Solution Approach 1:
The patent changes the fundamental parameter of DRX cycle duration from integer values to non-integer values (e.g., 16.67ms, 11.11ms, 8.33ms) to precisely match XR/CG traffic periodicities. This parameter change enables exact alignment between DRX wake-up periods and traffic arrival patterns, significantly improving power consumption efficiency by avoiding unnecessary wake-ups while maintaining simplicity in configuration through standardized non-integer values.
2Reliability
If DRX ON period is extended to cover jitter in traffic arrival, then reliability of data reception is improved, but power consumption increases
Solution Approach 1:
The patent introduces dynamic adjustment of the DRX ON period duration based on measured traffic jitter characteristics. Instead of using a fixed extended ON period, the system dynamically adapts the ON period length to match the actual jitter observed in XR/CG traffic, ensuring reliable data reception while minimizing power consumption by extending the ON period only as much as necessary to cover the jitter range.
Solution Approach 2:
The system implements feedback mechanisms where the UE monitors traffic arrival patterns and jitter characteristics, then reports this information to the network. Based on this feedback, the network dynamically adjusts the DRX configuration parameters, creating a closed-loop system that optimizes the balance between reception reliability and power consumption based on actual traffic conditions.
3Adaptability or versatility
If multiple DRX configurations are supported for different traffic patterns, then adaptability to various services is improved, but device complexity and configuration management difficulty increase
Solution Approach 1:
The patent segments the DRX configuration space by defining distinct, standardized non-integer cycle values optimized for specific XR/CG service types (e.g., 16.67ms for 60fps video streaming, 11.11ms for 90fps, 8.33ms for 120fps). This segmentation allows the system to support multiple services with different traffic patterns while maintaining manageable complexity, as each segmented configuration can be independently optimized and selected based on service requirements without requiring complex cross-service coordination.
Data Source
AI summary
A method for enabling a wireless communication device to access services provided by a Radio Access Network, a user equipment (UE), a base station (BS) and a non-transitory computer readable storage medium are provided. In the method, a discontinuous reception (DRX) cycle is configured with a DRX ON period for transmission of at least one of control information or data and a DRX OFF period during which the transmission is suspended, and specifically the DRX cycle is a specific DRX cycle having a non-integer duration. This can eliminate a mismatch between burst arrival interval and the DRX cycle to adapt the EXtended Reality (XR)/Cloud Gaming (CG) traffic, for example.