Monitoring Pattern Separation for Component Carrier RF Layout
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Solution Overview
Problem
In wireless communication systems employing carrier aggregation, the current discontinuous reception (DRX) patterns are not optimized for user equipment (UE) capable of simultaneous and independent operation across multiple component carriers, leading to gaps in measurement and PDCCH coverage when switching between activated and deactivated carriers.
Innovation Solution
Configuring independent monitoring patterns for each component carrier based on the UE's RF layout, allowing simultaneous and independent operation across frequency non-contiguous carriers, and tailoring DRX periods to avoid power consumption and measurement gaps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single DRX pattern is applied across all component carriers, then device complexity is reduced and ease of operation is improved, but measurement precision and PDCCH coverage reliability deteriorate when switching between activated and deactivated carriers
Solution Approach 1:
The patent segments the monitoring pattern into two distinct types: a first monitoring pattern for frequency non-contiguous component carriers and a second monitoring pattern for frequency contiguous component carriers. This segmentation allows the system to apply the appropriate monitoring pattern based on the specific carrier configuration, thereby maintaining both ease of operation through standardized patterns and measurement precision through carrier-specific optimization.
Solution Approach 2:
The patent applies different monitoring pattern characteristics to different component carrier scenarios. Frequency non-contiguous carriers receive a first monitoring pattern optimized for their spacing, while frequency contiguous carriers receive a second monitoring pattern optimized for their adjacency. This local quality approach ensures each carrier type is monitored with the most appropriate pattern for its characteristics.
2Use of energy by moving object
If DRX periods are extended to save power, then energy consumption is reduced, but PDCCH coverage and measurement reliability deteriorate due to increased gaps in monitoring
Solution Approach 1:
The patent implements dynamic monitoring patterns that adapt to the UE's RF capability and component carrier configuration. The network configures appropriate monitoring patterns based on whether the UE can simultaneously receive non-contiguous carriers, allowing the system to optimize between power consumption and reliability in real-time based on actual operational conditions.
Solution Approach 2:
The patent changes the monitoring pattern parameters (period, offset, duration) based on the component carrier frequency relationship and UE capability. By adjusting these parameters dynamically, the system achieves optimal balance between power saving and reliable PDCCH reception for different carrier configurations.
3Productivity
If the UE simultaneously monitors frequency non-contiguous carriers, then carrier aggregation capability and productivity are improved, but device complexity and RF layout requirements increase
Solution Approach 1:
The patent segments carriers into frequency non-contiguous and frequency contiguous groups, applying different monitoring patterns to each group. This segmentation enables the UE to efficiently manage simultaneous monitoring of multiple non-contiguous carriers by using a monitoring pattern specifically designed for their spacing characteristics, thereby improving productivity without proportionally increasing device complexity.
Solution Approach 2:
The patent creates a universal framework that handles both frequency non-contiguous and frequency contiguous carriers through standardized monitoring pattern configurations. The network can configure appropriate patterns based on UE capability, making the system universally applicable to different carrier aggregation scenarios without requiring complex UE-side logic.
Data Source
AI summary
A network learns capability information indicating whether a user equipment (UE) is capable of simultaneous and independent operation in multiple component carriers (CCs). The network configures a monitoring pattern for each of multiple CCs that are configured for the UE in dependence on the received capability information. The capability information derives from the UE's RF layout; if the UE is capable of such simultaneous and independent operation the network can assign for the CCs different monitoring patterns that are independent of one another and the UE will have no gaps where it cannot take or send a measurement. This knowledge is particularly useful if the CCs are frequency non-contiguous with one another. If the UE is not so capable, the network must assign monitoring patterns to that UE for all its configured CCs that are not independent of one another.