Adaptive Coverage Enhancement for LTE User Equipment
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Solution Overview
Problem
In LTE or LTE-A systems, user equipment (UE) lacks adaptive coverage enhancement techniques based on current feature parameters, leading to inefficient resource utilization, increased complexity, and higher power consumption due to uniform coverage enhancement methods.
Innovation Solution
The implementation of a signal transmission method in UE and base stations that determines feature parameters to adaptively select appropriate coverage enhancement technologies, signal sets, and functions based on preset correspondences, optimizing resource usage and reducing processing complexity and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uniform coverage enhancement technology is used for signal transmission, then coverage reliability is improved, but system resource overhead increases and resource utilization decreases
Solution Approach 1:
The patent changes the parameter of coverage enhancement by introducing multiple coverage enhancement values (first coverage enhancement value and second coverage enhancement value) corresponding to different feature parameter ranges. Instead of using a uniform coverage enhancement approach, the system dynamically adjusts the coverage enhancement parameter based on the UE's feature parameters, thereby maintaining reliability while reducing unnecessary resource overhead.
Solution Approach 2:
The patent implements a dynamic coverage enhancement mechanism where the coverage enhancement value is not fixed but changes based on the UE's feature parameters. The base station dynamically selects between first and second coverage enhancement values according to the current feature parameter range, making the system adaptive and efficient rather than static and resource-intensive.
2Reliability
If uniform coverage enhancement technology is used for signal transmission, then coverage reliability is improved, but processing complexity increases
Solution Approach 1:
The patent segments the feature parameter range into multiple ranges (first feature parameter range and second feature parameter range), each associated with a specific coverage enhancement value. This segmentation allows the system to handle different scenarios with simplified, pre-defined rules rather than complex uniform processing, reducing overall processing complexity while maintaining reliability.
Solution Approach 2:
By changing the coverage enhancement parameter based on feature parameter ranges, the patent simplifies the processing logic. Instead of complex uniform coverage enhancement calculations, the system uses straightforward parameter selection based on pre-defined ranges, thereby reducing processing complexity while ensuring reliable coverage.
3Reliability
If uniform coverage enhancement technology is used for signal transmission, then coverage reliability is improved, but power consumption increases
Solution Approach 1:
The patent reduces power consumption by dynamically adjusting the coverage enhancement parameter. When the UE's feature parameters indicate good channel conditions, the system uses a lower coverage enhancement value, thereby reducing the energy required for signal transmission and processing while maintaining adequate coverage reliability.
Solution Approach 2:
The dynamic adjustment of coverage enhancement values based on real-time feature parameters allows the system to optimize power consumption. The base station and UE adapt their transmission and processing power according to the current channel conditions and feature parameter ranges, avoiding unnecessary energy expenditure while ensuring reliable coverage.
Data Source
AI summary
In one embodiment, an apparatus includes a memory comprising instructions and a processor in communications with the memory. The processor is configured to execute the instructions to determine a reference signal received power of user equipment (UE). In response to determining that the reference signal received power is less than or equal to a threshold, it is determined that the UE supports sending a physical random access channel, receiving a random access response message, sending a random access response acknowledgment message, and receiving a contention resolution message. In response to determining that the reference signal received power is above the threshold, it is determined that the UE supports sending the physical random access channel, and receiving the contention resolution message, and it is determined that the UE does not support sending the random access response acknowledgment message and receiving the random access response message.