RRM Measurement Scheduling Across Dual eDRX Paging Windows
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Solution Overview
Problem
In the NR system, there is a need to resolve how a terminal device in an inactive state performs RRM measurement within two paging time windows (PTWs) when the inactive eDRX cycle is greater than 10.24 seconds, as this scenario is not addressed in Release 17.
Innovation Solution
The terminal device performs RRM measurement within a first paging time window of an idle-state eDRX cycle and/or a second PTW of an inactive-state eDRX cycle, utilizing parameter sets that include the lengths of these cycles and paging DRX cycles to optimize measurement behavior.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the inactive eDRX cycle is increased to reduce power consumption, then the terminal device wakes up less frequently, but the complexity of managing RRM measurements across multiple PTWs increases
Solution Approach 1:
The patent segments the measurement management by introducing distinct parameter sets for different PTW scenarios. When the inactive eDRX cycle exceeds 10.24 seconds, the system divides measurement management into separate handling for the first PTW (idle-state) and second PTW (inactive-state), each with their own parameter sets. This segmentation allows the terminal to manage measurements in a structured way despite the complexity introduced by long eDRX cycles.
Solution Approach 2:
The patent implements dynamic adaptation by allowing the terminal to select between different parameter sets based on the actual eDRX cycle configuration. The network can configure multiple parameter sets, and the terminal dynamically chooses the appropriate set depending on whether the inactive eDRX cycle is greater than or less than 10.24 seconds, thereby adapting to varying power consumption requirements without manual reconfiguration.
2Measurement precision
If the terminal device performs RRM measurement within both first PTW and second PTW, then measurement precision is improved, but energy consumption increases
Solution Approach 1:
The patent applies partial action by allowing the terminal to perform RRM measurements selectively based on configuration. The network can configure the terminal to perform measurements in the first PTW, the second PTW, or both, depending on the required measurement precision and power consumption constraints. This partial action approach ensures measurements are performed only when necessary rather than continuously.
Solution Approach 2:
The patent changes measurement parameters dynamically by introducing multiple parameter sets with different configurations. Each parameter set defines specific measurement behaviors, timing, and resource allocation. The terminal adjusts measurement parameters based on the active parameter set, which is selected according to the eDRX cycle configuration and network requirements, thereby optimizing the balance between measurement precision and power consumption.
Data Source
AI summary
A measurement method and a related apparatus are disclosed. The method includes: receiving a reference signal; and in an inactive state, performing radio resource management RRM measurement within a first paging time window PTW of an idle-state extended discontinuous reception eDRX cycle and/or a second PTW of an inactive-state eDRX cycle based on the reference signal, where the inactive-state eDRX cycle is greater than 10.24 s.