Adaptive Reporting Configuration for NB-IoT Coverage Levels
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Solution Overview
Problem
Low complexity and low cost wireless devices, such as those used in NB-IoT, have limited reporting capabilities, leading to less accurate power usage information and suboptimal scheduling decisions by the network due to restricted power headroom reporting, which affects coverage and operational efficiency.
Innovation Solution
A method and system for determining a reporting configuration associated with a coverage level of a wireless device, allowing it to adapt its reporting resolution based on its coverage area, enabling more accurate power headroom reporting and improved scheduling decisions by the network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If low complexity reporting configuration is used for NB-IoT devices, then device complexity is reduced, but measurement precision deteriorates
Solution Approach 1:
The patent applies dynamics by making the reporting configuration adaptive rather than static. The network node determines the appropriate reporting configuration based on the UE's coverage level, allowing the system to dynamically adjust between different reporting resolutions (first resolution for normal coverage, second resolution for enhanced coverage). This resolves the contradiction by enabling the system to optimize for device complexity when needed while maintaining measurement precision when coverage conditions require it.
2Device complexity
If fixed reporting resolution is used for all coverage levels, then device complexity is reduced, but measurement precision deteriorates in enhanced coverage scenarios
Solution Approach 1:
The patent applies parameter changes by modifying the reporting resolution parameter based on coverage level conditions. The system defines at least two different reporting resolutions and selects the appropriate one based on whether the UE is in normal or enhanced coverage. This resolves the contradiction by allowing the reporting resolution parameter to change adaptively, maintaining device simplicity while improving measurement precision when enhanced coverage conditions are detected.
3Reliability
If coverage enhancing techniques are applied, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent applies the intermediary principle by introducing the network node as a mediator that determines the reporting configuration based on coverage level assessment. Rather than requiring the UE to independently assess and adapt its reporting capabilities, the network node acts as an intermediary that receives coverage level information and selects the appropriate reporting configuration. This resolves the contradiction by shifting the complexity burden from the UE to the network, improving reliability through proper coverage adaptation while keeping device complexity low.
Data Source
AI summary
Systems and methods of determining a reporting configuration associated with a coverage level of a wireless device are provided. In one exemplary embodiment, a method performed by a wireless device (105, 200, 300, 400, 1000) in a wireless communication system (100) includes obtaining (503) information indicating a coverage level (113a-d) of the wireless device. Further, the method includes determining (507), from amongst different reporting configurations (115a-d) respectively associated with different coverage levels of the wireless device, the reporting configuration associated with the coverage level indicated by the obtained information. Also, the method includes reporting (511) a measurement result using the determined reporting configuration.