MIMO Receive Antenna Selection for Power Optimization
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Solution Overview
Problem
The increased power consumption of communication devices due to the use of multiple receive antennas, which can lead to unnecessary power usage when more antennas than required are employed for data reception in good conditions with low throughput.
Innovation Solution
A communication device with a determiner to selectively use only the necessary receive antennas for MIMO data reception based on reception performance criteria and communication service types, dynamically switching antennas on or off to optimize power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple receive antennas are used for MIMO data reception, then reception quality and throughput are improved, but power consumption increases
Solution Approach 1:
The patent applies dynamics by making the antenna configuration adjustable rather than fixed. The determining unit dynamically selects the number of antennas to use based on current reception conditions and service requirements, allowing the system to adapt between using fewer antennas (for power saving) and more antennas (for improved reception quality) as needed.
Solution Approach 2:
The patent changes the parameter of antenna quantity from a static configuration to a variable parameter. By determining the specific number of antennas to use based on reception quality thresholds and service types, the system optimizes the balance between power consumption and reception performance.
2Productivity
If more receive antennas are used, then throughput is improved, but power consumption increases unnecessarily in good conditions
Solution Approach 1:
The patent applies partial action by using only the necessary number of antennas rather than always activating all available antennas. The determining unit evaluates whether the current reception conditions require full antenna utilization or if a subset of antennas is sufficient, thereby avoiding unnecessary energy consumption while maintaining adequate throughput.
Solution Approach 2:
The system dynamically adjusts the antenna quantity parameter based on throughput requirements and reception conditions. When good reception conditions are detected, the system reduces the number of active antennas, thereby eliminating unnecessary power usage while maintaining sufficient throughput for the given service type.
3Use of energy by stationary object
If receive antennas are selectively used, then power consumption is reduced, but reception quality may be compromised
Solution Approach 1:
The patent implements feedback by continuously monitoring reception quality and using this information to adjust the number of active antennas. The determining unit receives feedback about reception conditions and service requirements, then adjusts antenna selection accordingly to maintain adequate reception quality while minimizing power consumption.
Solution Approach 2:
The system dynamically adapts the antenna configuration based on real-time reception quality feedback. When reception quality deteriorates, the system automatically increases the number of active antennas to restore reliable reception. When reception quality is good, the system reduces antenna usage to save power, thus dynamically balancing both requirements.
Data Source
AI summary
A communication device is provided comprising a plurality of receive antennas; a determiner configured to determine, for each receive antenna of the plurality of receive antennas, whether the receive antenna is to be used by the communication device for performing a MIMO data reception; and a receiver configured to perform the MIMO data reception using the receive antennas that have been determined to be used for performing the MIMO data reception.