NB-IoT Multibit Repetition Range Identifier for Connection Reliability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing technologies face challenges in establishing reliable wireless connections for Narrowband Internet of Things (NB-IoT) devices, particularly in noisy environments, due to interference and limitations in reporting downlink channel quality.
Innovation Solution
A method and apparatus for determining signal quality, coverage level, and maximum repetition level for NB-IoT devices, which generate and transmit a multibit repetition range identifier to improve communication by optimizing resource usage and decoding Narrowband Physical Downlink Control Channel signals with a low block error rate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If NB-IoT devices attempt to establish connections in noisy environments using existing technologies, then connection establishment is hindered or prohibited due to interference and noise, but increasing transmission power or repetitions may improve reliability while consuming more energy and resources
Solution Approach 1:
The patent changes the parameter representation from single-bit to multibit repetition range identifier, enabling more precise control over repetition values. This allows the device to adaptively select optimal repetition counts based on coverage levels, improving connection reliability without excessive energy consumption by avoiding both under-repetition and over-repetition
Solution Approach 2:
The patent introduces dynamic adaptation by determining coverage levels based on signal quality measurements and adjusting repetition values accordingly. The system transitions from static repetition schemes to dynamic ones where the repetition range identifier is adjusted based on real-time channel conditions, optimizing the balance between reliability and energy usage
2Measurement precision
If NB-IoT devices use existing downlink channel quality reporting methods, then reporting is limited, but enhancing reporting capabilities increases device complexity and processing requirements
Solution Approach 1:
The patent segments the channel quality reporting into discrete coverage levels (first, second, third coverage levels) with corresponding repetition ranges. This segmentation simplifies the reporting mechanism while maintaining precision, as devices only need to determine which coverage level they fall into and report the corresponding multibit identifier, rather than performing complex continuous measurements and reporting
3Reliability
If NB-IoT devices transmit with higher repetition values to overcome noise, then connection reliability improves, but resource usage increases and communication efficiency decreases
Solution Approach 1:
The patent implements dynamic repetition value selection based on determined coverage levels. Devices calculate appropriate repetition values within specific ranges corresponding to their coverage level, allowing the system to use minimal repetitions in good conditions (high efficiency) and increase repetitions only when necessary (maintaining reliability). This dynamic approach optimizes the trade-off between reliability and communication efficiency
Solution Approach 2:
The patent changes the repetition parameter from fixed or single-bit controlled values to multibit controlled values with expanded ranges. This enables more granular control over repetition counts, allowing the system to precisely adjust the number of repetitions to match channel conditions, avoiding both insufficient repetitions (poor reliability) and excessive repetitions (low efficiency)
Data Source
AI summary
In some aspects, a method for a user equipment (UE) is provided. In some examples, the UE determines a signal quality for communicating with a node. The UE determines a coverage level based on the signal quality, wherein the coverage level indicates resources to be used for communicating with the node. The UE determines a maximum repetition level and a repetition value, based on the coverage level, for communicating with the node. The UE generates a multibit repetition range identifier that indicates the repetition value based on the maximum repetition level. The UE transmits the multibit repetition range identifier.