NR Paging Carrier Selection for Load-Balanced DRX Monitoring
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Solution Overview
Problem
Existing paging carrier determination methods in NR do not adequately consider load balance between anchor and non-anchor carriers, leading to inefficient power consumption and potential assignment of 'bad carriers' based solely on UE_ID, without considering load balance or energy efficiency.
Innovation Solution
A method for determining paging carriers in NR that takes into account carrier paging weight, DRX cycle, frequency position, and reference time, along with UE-specific configurations to optimize carrier selection for power efficiency and load balancing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If paging carrier is determined solely based on UE_ID, then the determination process is simple, but it leads to inefficient power consumption and potential assignment of bad carriers
Solution Approach 1:
The patent changes the parameters used for carrier determination from solely UE_ID to a comprehensive set including carrier paging weight, DRX cycle, frequency position, and reference time. This parameter expansion enables intelligent carrier selection that balances load and optimizes power consumption while maintaining operational simplicity through automated evaluation.
2Device complexity
If carrier selection does not consider load balance, then the selection process is straightforward, but it causes inefficient power consumption and bad carrier assignment
Solution Approach 1:
The patent implements feedback mechanisms by considering carrier paging weight and DRX cycle configurations when determining the paging carrier. This feedback loop ensures that carriers with higher weights or more suitable DRX cycles are selected, optimizing energy efficiency while maintaining manageable process complexity through structured evaluation criteria.
3Device complexity
If anchor carrier is used for SSB and SIB transmission, then other carriers can be simplified, but it creates dependency and potential single point of failure
Solution Approach 1:
The patent applies local quality by allowing different carriers to have different roles and configurations. While the anchor carrier provides foundational SSB and SIB transmission, non-anchor carriers can independently handle paging functions based on their specific configurations (paging weight, DRX cycle). This differentiation reduces overall dependency while maintaining system reliability through distributed functionality.
Data Source
AI summary
Methods and apparatuses for paging carrier determination for NR are disclosed. A UE comprises a processor; and a transceiver coupled to the processor, wherein the processor is configured to receive, via the transceiver, a configuration of one or more carriers, wherein the configuration of each carrier includes at least one of paging search space, a carrier paging weight, a carrier DRX cycle, the number of paging frames within the DRX cycle, the number of paging occasions within one paging frame, the number of monitoring paging occasions for each SSB, transmission beam ON/OFF indication, and antenna port QCL type with anchor carrier; and determine a paging carrier from a paging carrier set including at least one of the one or more carriers according to the configuration.