Non-Integer DRX Cycle Configuration for XR Traffic Alignment
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Solution Overview
Problem
Current DRX configurations in wireless communication systems do not effectively align with the non-integer periodicity of extended Reality (XR) traffic, leading to increased latency and power consumption.
Innovation Solution
The implementation of a method in User Equipment (UE) that determines whether to apply integer or non-integer DRX cycle parameters based on the presence of specific DRX configurations received from a Base Station (BS), allowing for more precise alignment with XR traffic patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If integer DRX cycle parameters are used, then device complexity is reduced and ease of operation is improved, but latency increases and alignment with XR traffic periodicity deteriorates
Solution Approach 1:
The patent changes the parameter type from integer-only to include fractional values. The DRX cycle parameter is extended to accept fractional values (e.g., 16.67ms for 60fps XR traffic) in addition to traditional integer values. This allows the DRX cycle to precisely match the periodicity of XR traffic patterns while maintaining the same configuration mechanism, thus reducing latency without significantly increasing device complexity.
2Device complexity
If integer DRX cycle parameters are used, then device complexity is reduced, but power consumption increases due to misalignment with XR traffic patterns
Solution Approach 1:
The patent modifies the DRX cycle parameter to accept fractional values, enabling precise alignment with XR traffic periodicity (e.g., 16.67ms for 60fps). This alignment ensures the UE wakes up exactly when XR data arrives, avoiding unnecessary wake-ups and reducing power consumption. The change is implemented by extending the existing parameter format rather than adding complex new structures, thus maintaining low device complexity.
3Loss of time
If non-integer DRX cycle parameters are implemented, then alignment with XR traffic periodicity is improved and latency is reduced, but device complexity increases
Solution Approach 1:
The patent extends the DRX cycle parameter to accept fractional values by modifying the existing parameter representation. Instead of using separate complex structures for integer and fractional DRX cycles, the patent allows the same parameter field to represent both integer and fractional values uniformly. This approach reduces device complexity compared to implementing separate handling mechanisms for different DRX cycle types.
4Reliability
If non-integer DRX cycle parameters are implemented, then alignment with XR traffic periodicity is improved, but power consumption may increase due to higher processing requirements
Solution Approach 1:
The patent implements a unified parameter representation that accepts both integer and fractional values for the DRX cycle. This allows the system to select the most appropriate value based on XR traffic requirements without requiring complex processing to determine whether to use integer or fractional modes. The simplified decision logic reduces processing energy consumption while maintaining reliable alignment with XR traffic periodicity.
Data Source
AI summary
A method performed by a UE for a DRX operation is provided. The method receives an RRC message for configuring a set of DRX configurations including at least a first DRX configuration that indicates first parameters for an integer DRX cycle. The method determines whether the set of DRX configurations includes a second DRX configuration indicating second parameters for a non-integer DRX cycle. The method determines whether to apply the first parameters or the second parameters based on whether the set of DRX configurations includes the second DRX configuration. The method starts, based on the first parameters, a DRX timer in a case that the set of DRX configurations does not include the second DRX configuration, and starts, based on the second parameters, the DRX timer in a case that the set of DRX configurations includes the second DRX configuration.