Channel Quality Reporting via Transmission Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current channel quality reports in wireless communication systems do not accurately reflect transmission efficiency due to the lack of consideration for repetition in transmission, particularly in scenarios with significant penetration losses, such as in basements or buildings with metalized windows, leading to inefficient resource allocation and coverage issues.
Innovation Solution
A method for mobile stations to compute and report channel quality indicators based on transmission efficiency, taking into account the number of repetitions needed to achieve a pre-defined quality, by calculating transmission efficiency using transport block size, resource elements, and repetition number, and reporting these metrics to base stations to optimize resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional channel quality reporting methods are used without considering transmission repetition, then the reporting method is simple and compatible with existing systems, but the channel quality report does not accurately reflect transmission efficiency in scenarios with significant penetration losses
Solution Approach 1:
The patent introduces a new parameter 'transmission efficiency' that incorporates the number of repetitions into the channel quality reporting framework. This parameter changes the measurement approach from traditional signal strength alone to a composite metric that includes repetition count, thereby improving accuracy without fundamentally changing the reporting structure
Solution Approach 2:
The mobile station pre-calculates transmission efficiency by considering the number of repetitions needed to achieve a target block error rate before reporting channel quality. This preliminary calculation allows the system to prepare accurate reports in advance, improving measurement precision while maintaining systematic complexity management
2Reliability
If transmission repetition is used to bridge penetration losses in extreme coverage scenarios, then coverage and reliability are improved, but more resources and power are needed
Solution Approach 1:
The patent implements a feedback mechanism where the mobile station reports transmission efficiency and repetition information to the base station. The base station uses this feedback to make informed decisions about resource allocation and repetition configuration, optimizing the balance between reliability and power consumption by avoiding unnecessary repetitions
Solution Approach 2:
The system dynamically adjusts the number of repetitions based on real-time channel conditions and transmission efficiency reports. Rather than using fixed repetition schemes, the system adapts the repetition count to actual needs, improving reliability only when necessary and reducing power consumption when channel conditions are good
3Adaptability or versatility
If transmission repetition is implemented to support UEs in extreme coverage scenarios, then coverage extension is achieved, but resource allocation efficiency decreases
Solution Approach 1:
The mobile station provides feedback reports containing transmission efficiency metrics and repetition information to the base station. This feedback enables the base station to optimize resource allocation by allocating more resources to UEs that require repetitions and fewer resources to UEs with good channel conditions, thereby maintaining overall resource allocation efficiency while supporting coverage extension
Solution Approach 2:
The patent applies different resource allocation strategies to different UEs based on their specific channel conditions and repetition requirements. Rather than using a uniform allocation approach, the system tailors resource allocation to local needs, improving both coverage adaptability and overall resource efficiency by avoiding waste on UEs that don't need additional resources
Data Source
Figure 1
Figure 2A~2C
Figure 3~4
AI summary
Apparatus and methods are provided to report channel status with transmission repetition. In one novel aspect, the mobile station computes a transmission efficiency for a transport block, which is repeatedly transmitted such that the transport block is received with a predefined receiving quality; determines a channel quality indicator based on the transmission efficiency and transmits it to a base station. In one embodiment, the transport block is repeatedly transmitted over multiple subframes. In another novel aspect, the mobile station computes a plurality of transmission efficiencies corresponding to a plurality of transport blocks, wherein at least one transport black is repeatedly transmitted such that each transport block is received with a pre-defined receiving quality. The mobile station determines one or more channel quality indicators based on the transmission efficiencies and transmits either the channel quality indicator with the highest efficiency or each channel quality indicator to a base station.