Conditional Mobility Configuration Processing in Wireless Devices
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Solution Overview
Problem
Conditional mobility in New Radio (NR) systems faces challenges due to fast fading radio links, where preparing multiple target configurations for wireless devices can lead to processing delays, jeopardizing mobility robustness and service performance.
Innovation Solution
A wireless device is configured to process multiple conditional mobility configurations within a maximum allowed delay that increases with the number of configurations, allowing sufficient time for processing before receiving an uplink grant, and can delay processing of conditional mobility configurations until specific conditions are met, ensuring compliance with processing delays and readiness for uplink grants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple conditional mobility configurations are transmitted to the wireless device, then mobility robustness is improved by providing multiple target options, but the device's processing capability is overwhelmed leading to inefficient and delayed processing
Solution Approach 1:
The patent segments the processing of conditional mobility configurations by introducing separate processing timelines and conditions. Different configurations can be processed at different times based on whether their associated conditions are met, rather than requiring all configurations to be processed simultaneously. This divides the processing load into manageable segments that can be handled sequentially.
Solution Approach 2:
The patent applies preliminary action by preparing multiple conditional mobility configurations in advance and transmitting them to the wireless device before mobility failure occurs. The device stores these configurations and processes them when their specific conditions are met, rather than waiting to generate configurations reactively. This proactive preparation enables faster response when conditions are fulfilled.
2Adaptability or versatility
If the wireless device processes all conditional mobility configurations immediately, then all configurations are available for potential use, but the device cannot meet the maximum allowed processing delay requirement
Solution Approach 1:
The patent introduces dynamic processing where the timing and extent of configuration processing adapts based on the fulfillment of specific conditions. Rather than a static all-or-nothing processing approach, the device dynamically determines which configurations to process and when, based on condition monitoring results. This dynamic approach balances availability requirements with timing constraints.
Solution Approach 2:
The patent changes the parameter of processing timing from a fixed immediate processing requirement to a flexible condition-dependent timing mechanism. Each configuration has an associated condition that, when met, triggers its processing. This parameter change allows the system to meet maximum allowed processing delays while still making all configurations available when needed.
3Loss of time
If the wireless device waits to process conditional mobility configurations until conditions are met, then processing time is reduced, but the device may not be ready to receive uplink grants in time
Solution Approach 1:
The patent implements a feedback mechanism where the device monitors condition fulfillment and provides feedback to determine when to process configurations. The processing is triggered by feedback from condition monitoring, creating a closed-loop system that ensures configurations are processed at the optimal moment - when conditions are met but still within timing requirements for uplink grant readiness.
Solution Approach 2:
The patent employs periodic condition monitoring and evaluation as a structured action sequence. The device periodically checks whether conditions for processing configurations are met, and when conditions are fulfilled, it processes the configurations and prepares responses within defined time intervals. This periodic approach ensures systematic readiness for uplink grants while minimizing unnecessary processing.
Data Source
AI summary
A wireless device (16) is configured to receive, from a radio network node, a message (34) that includes a condition monitoring configuration (36) and a conditional mobility configuration (38). The condition monitoring configuration (36) configures the wireless device (16) to monitor a condition. The wireless device (16) is to apply the conditional mobility configuration (38) when the wireless device (16) detects fulfillment of the condition. The wireless device (16) is configured to process the condition monitoring configuration (36) upon receiving the message (34), and to process the conditional mobility configuration (38) subject to a processing precondition being met.