Adaptive CDRX Active-Section Control for XR Traffic
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Solution Overview
Problem
Existing radio communication systems face challenges in balancing power consumption and traffic delay in XR applications due to the setting of active sections in Connected mode Discontinuous Reception (CDRX), where large active sections increase power consumption and small active sections result in traffic delays.
Innovation Solution
Implementing a control mechanism in terminals and base stations to dynamically extend or shorten the active sections based on specific conditions, such as communication activity levels or notifications, to optimize power consumption while minimizing traffic delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a large length of active section of CDRX is set to absorb jitter of XR traffic, then power consumption of terminal increases, but traffic delay is suppressed
Solution Approach 1:
The patent applies dynamics by making the active section length variable rather than fixed. The base station determines the active section length based on traffic conditions (jitter buffer size, packet arrival patterns) and dynamically adjusts it. This allows the system to adapt to changing traffic characteristics, using longer active sections when jitter is high and shorter sections when traffic is stable, thereby resolving the contradiction between power consumption and traffic delay
Solution Approach 2:
The patent changes the parameter of active section length based on traffic conditions. By monitoring factors such as jitter buffer size, packet arrival intervals, and traffic patterns, the system adjusts the active section length parameter to optimize both power consumption and delay performance. This parameter adaptation allows the system to achieve low delay when needed while conserving power during stable traffic periods
2Use of energy by moving object
If a small length of active section of CDRX is set, then power consumption of terminal is reduced, but XR traffic cannot be received resulting in delay
Solution Approach 1:
The patent implements feedback mechanisms where the terminal reports traffic conditions (such as packet arrival patterns, jitter characteristics) to the base station. The base station uses this feedback to determine appropriate active section lengths. This closed-loop control ensures that the active section is long enough to capture incoming XR traffic while minimizing unnecessary extensions, thus reducing power consumption without causing delay
Solution Approach 2:
The patent applies preliminary action by having the terminal predict or indicate upcoming traffic patterns to the base station. Based on this advance information, the base station can pre-configure appropriate active section lengths before traffic arrives, ensuring that the terminal wakes up at the right time to receive traffic without excessive delay while avoiding unnecessary wake-ups that would increase power consumption
Data Source
AI summary
A terminal includes a communication unit that executes intermittent communication in which communication is executed in a periodic first section, and communication is not executed in a second section other than the first section; and a control unit that executes extension of the first section or shortening of the first section when a specific condition is satisfied.