Wireless Device RLM Adaptation via Recommended Repetition Levels
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Solution Overview
Problem
Existing wireless communication networks face challenges in accurately monitoring radio link quality, particularly in enhanced coverage scenarios, leading to unreliable radio link monitoring (RLM) and inefficient resource usage.
Innovation Solution
The method involves a wireless device reporting recommended repetition and aggregation levels to the network node, allowing the node to adapt transmission parameters based on the device's coverage level, thereby optimizing signal repetition only when necessary and improving RLM accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If signal repetition is applied to enhance coverage in poor channel conditions, then reliability of communication is improved, but resource usage efficiency deteriorates
Solution Approach 1:
The patent dynamically changes transmission parameters (repetition level, aggregation level) based on the device's coverage level and channel conditions. The network node receives feedback about the device's capability to support enhanced event monitoring and adjusts the repetition of control channels accordingly, applying signal repetition only when necessary for devices in poor coverage conditions rather than universally.
Solution Approach 2:
The system transitions from static transmission parameters to dynamic adaptation. The network node continuously monitors the device's coverage level and feedback information, then adapts the repetition level and aggregation level of control channels in real-time, making the system flexible and responsive to changing channel conditions.
2Reliability
If signal repetition is increased for devices in enhanced coverage mode, then coverage reliability is improved, but network resource efficiency deteriorates
Solution Approach 1:
Different transmission qualities are applied to different devices based on their specific needs. Devices in enhanced coverage mode receive higher repetition levels and aggregation levels, while devices in normal coverage receive standard parameters. This localized adaptation ensures that resource-intensive signal repetition is applied only where necessary, maintaining network resource efficiency while improving coverage reliability for affected devices.
3Measurement precision
If the wireless device continuously monitors radio link quality with high repetition, then RLM accuracy is improved, but device energy consumption increases
Solution Approach 1:
The patent changes the monitoring parameters dynamically based on the device's coverage level. Devices in enhanced coverage mode use higher aggregation levels and repetition factors for RLM, which improves measurement accuracy in poor conditions. The device also provides feedback about its capability to support enhanced event monitoring, allowing the network to adjust parameters to balance accuracy requirements with energy consumption constraints.
Data Source
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AI summary
Embodiments herein relate to a method performed by a wireless device (10) for enabling the wireless device (10) to perform RLM of a cell (11) of a network node (12) in a wireless communication network (1). The wireless device (10) sends to a network node (12) serving the wireless device (10), e.g. the network node providing the cell, an indication indicating at least one recommended repetition level and/or recommended aggregation level, of at least one radio signal and/or control channel.