Selective Antenna Activation for MTC Power Reduction
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Solution Overview
Problem
Machine-type communication (MTC) devices face significant power consumption issues due to the consistent activation of diversity antennas during traffic calls, even when channel conditions are stable, leading to inefficient energy use.
Innovation Solution
The method involves selectively activating diversity antennas based on prior usage and location changes, where antennas are kept inactive if channel conditions were satisfactory during previous calls and remain unchanged, and activated only if location or channel conditions indicate a need for improved communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the diversity antenna is activated during each traffic call to improve communication reliability, then the communication quality is improved, but the power consumption increases
Solution Approach 1:
The patent applies dynamics by making the antenna configuration adaptive rather than static. The system dynamically switches between single-antenna and diversity-antenna modes based on real-time channel condition assessments, allowing the MTC device to optimize its power consumption while maintaining communication reliability when needed
Solution Approach 2:
The patent changes the operational parameters of the antenna system based on channel conditions. By monitoring channel quality metrics and adjusting the antenna activation state accordingly, the system transitions between different operational modes to balance reliability and power consumption
2Stability of the object's composition
If the diversity antenna is consistently activated to ensure stable communication, then the communication stability is improved, but the battery life is reduced
Solution Approach 1:
The patent implements periodic assessment of channel conditions followed by selective activation of the diversity antenna. Rather than continuous activation, the system periodically evaluates whether diversity mode is needed and activates the second antenna only during periods when channel conditions warrant it, thereby extending battery life while maintaining stability when necessary
3Reliability
If the diversity antenna is activated to handle potential channel degradation, then the communication robustness is improved, but the energy efficiency is worsened
Solution Approach 1:
The patent employs feedback mechanisms where the MTC device monitors channel conditions and uses this information to control antenna activation. The system receives feedback about channel quality and adjusts its antenna configuration accordingly, activating the diversity antenna only when the feedback indicates deteriorating conditions, thus improving energy efficiency while maintaining robustness
Data Source
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AI summary
A wireless device includes a first antenna and a second antenna that may be used to communicate with a wireless network. The wireless device initiates a traffic call with a wireless network and activates a first antenna to be used to communicate with the wireless network upon initiating the traffic call. The wireless device selectively activates a second antenna, when initiating the traffic call, based at least in part on a usage of the second antenna during a previous traffic call. For example, the wireless device may maintain the second antenna in an inactive state if the second antenna was deactivated during the previous traffic call and/or remained inactive for at least a threshold duration.