Antenna Control for IoT Reception Diversity
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Solution Overview
Problem
When LTE communication is applied to IoT devices, simplifying the circuit configuration to reduce power consumption can lead to degraded communication quality due to the elimination of reception diversity, making it difficult to handle changes in the communication environment.
Innovation Solution
A reception apparatus with multiple antennas compatible with the LTE communication scheme, which includes a single reception processing section and a control system that switches between antennas based on signal quality measurements to maintain optimal communication quality while minimizing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the circuit configuration is simplified to reduce power consumption, then power consumption is reduced, but reception diversity is eliminated and communication quality deteriorates
Solution Approach 1:
The patent merges multiple antenna elements into a single reception processing section. Instead of having separate processing circuits for each antenna, the invention combines the processing function into one shared unit that can handle signals from any antenna, thereby reducing overall circuit complexity and power consumption while maintaining the ability to utilize multiple antennas for diversity reception.
Solution Approach 2:
The patent introduces dynamic antenna switching capability where the system can switch between different antenna elements based on reception conditions. This dynamic adaptation allows the simplified single processing section to optimize performance by selecting the best antenna for current communication conditions, maintaining reliability while keeping power consumption low.
2Device complexity
If a single reception processing section is used, then device complexity is reduced and power consumption decreases, but the ability to handle transmission path changes is weakened
Solution Approach 1:
The patent implements preliminary antenna selection and switching mechanisms that prepare the system for potential transmission path changes. The control section monitors reception quality in advance and proactively switches antennas when degradation is detected, allowing the simplified processing architecture to adapt to changing conditions without requiring complex simultaneous processing of multiple antenna signals.
Data Source
AI summary
A reception apparatus (10) includes plural antennas (101, 102) that are compatible with an LTE communication scheme and one reception processing section (100) processing a reception signal acquired by any one of the plural antennas (101, 102).