Base Station Paging Miss Rate Adjustment for IoT Power Efficiency
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Solution Overview
Problem
Narrowband IoT devices experience issues with page reception due to signal fading, leading to increased power consumption and resource utilization as the network schedules numerous wake-up signals and page repetitions for reliable paging.
Innovation Solution
A base station adjusts its paging miss rate and transmits an indication of the target miss rate to user equipment (UEs), allowing UEs to optimize their wake-up signal reception by reducing the number of repetitions, thereby conserving resources and improving power efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network schedules numerous wake-up signals and page repetitions for reliable paging, then paging reliability is improved, but power consumption and resource utilization increase
Solution Approach 1:
The patent changes the parameter of target miss rate from fixed to adjustable, allowing the network to optimize paging reliability by setting appropriate miss rate thresholds based on device characteristics and channel conditions, thereby reducing unnecessary repetitions and power consumption
Solution Approach 2:
The patent introduces dynamic adjustment of paging parameters including target miss rate, number of repetitions, and wake-up signal configurations based on real-time channel conditions and device states, enabling the system to adapt between reliability and power consumption requirements
2Reliability
If the network schedules numerous wake-up signals and page repetitions for reliable paging, then paging reliability is improved, but resource utilization increases
Solution Approach 1:
The patent adjusts the target miss rate parameter to optimize resource allocation, allowing the network to determine appropriate paging repetition counts based on actual channel conditions rather than using fixed conservative values, thereby reducing overall resource utilization
Solution Approach 2:
The patent implements partial repetitions only when necessary based on target miss rate criteria, avoiding excessive paging repetitions in good channel conditions while maintaining reliability when needed, thus optimizing resource usage
3Device complexity
If narrowband communications use limited frequency bandwidth, then device complexity is reduced, but signal fading resistance deteriorates
Solution Approach 1:
The patent introduces target miss rate as a key parameter to compensate for narrowband vulnerability to fading, allowing the system to adjust paging reliability thresholds based on channel conditions rather than relying solely on bandwidth diversity
Solution Approach 2:
The patent implements feedback mechanisms where the network monitors paging success rates and adjusts target miss rate and repetition configurations accordingly, enabling narrowband devices to achieve fading resistance through adaptive control rather than physical diversity
Data Source
AI summary
A configuration to enable a base station to adjust an error rate for paging and to advertise such error rate to UEs, in order to optimize or reduce network paging resources. The apparatus determines a target miss rate for paging on a downlink narrowband control channel. The apparatus transmits an indication of the target miss rate to one or more UEs. The indication is transmitted in system information or a dedicated downlink channel.