RRM Measurement Reporting for Multi-Rx-Chain Handover Decisions
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Solution Overview
Problem
Wireless networks do not account for the varying quantities of reception chains (Rx chains) in user equipment (UEs) when configuring thresholds for handover procedures, cell addition, or droppage, thereby preventing UEs with more Rx chains from utilizing their potential diversity gains.
Innovation Solution
UEs adjust measurement reports to the network based on their Rx chain quantities, applying an opportunistic gain metric to measurements to optimize handover decisions, cell addition, or droppage, thereby leveraging the diversity gains offered by increased Rx chains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless networks use uniform measurement thresholds for all UEs, then network configuration is simplified, but UEs with more Rx chains cannot utilize their diversity gains
Solution Approach 1:
The patent applies local quality by allowing different UEs to use different measurement thresholds based on their specific Rx chain quantities. Each UE determines its own threshold offset according to its capability, enabling customized measurement reporting that adapts to local device characteristics rather than applying a uniform network-wide threshold.
Solution Approach 2:
The patent changes the measurement threshold parameter dynamically based on the UE's Rx chain quantity. The threshold is adjusted by adding an offset value that corresponds to the UE's diversity gain capability, transforming a static uniform threshold into a dynamic adaptive threshold that reflects individual UE characteristics.
2Measurement precision
If UEs apply opportunistic gain based on Rx chain quantities, then measurement accuracy improves, but processing complexity increases
Solution Approach 1:
The patent applies preliminary action by having the UE determine its Rx chain quantity and calculate the appropriate threshold offset in advance, before actual measurement reporting occurs. This pre-computation of the offset value simplifies the real-time measurement process, as the UE only needs to apply the pre-determined offset to its measurements rather than performing complex calculations during measurement reporting.
3Productivity
If networks configure separate thresholds for different UE types, then measurement optimization improves, but network configuration complexity increases
Solution Approach 1:
The patent applies self-service by enabling UEs to autonomously determine their own measurement thresholds based on their Rx chain quantities. Instead of the network manually configuring different thresholds for different UE types, each UE independently calculates its appropriate threshold using its own capability information, eliminating the need for complex network-side configuration management.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A wireless device may receive a control signal that indicates a radio resource management (RRM) configuration associated with one or more measurement thresholds for managing wireless communication links at the wireless device. The wireless device may then perform measurements for one or more synchronization signals in accordance with the RRM configuration. The wireless device may then apply an opportunistic gain to the measurements to generate modified measurements based on a quantity of radio frequency (RF) chains usable by the wireless device for communicating via the wireless communication links. The wireless device may then transmit a measurement report based on the modified measurements satisfying the one or more measurement thresholds, and may receive an additional control signal instructing the wireless device to manage the wireless communication links based on the measurement report.