Dynamic Uplink MIMO Configuration for Energy-Efficient Cellular Terminals
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Solution Overview
Problem
Terminal devices in cellular networks face challenges in achieving short upload times and high uplink bitrates while minimizing electric energy consumption, as using multiple antennas for MIMO configurations increases power consumption and may not be necessary for all data transmission scenarios.
Innovation Solution
An uplink control module dynamically creates and manages a MIMO configuration by activating or deactivating additional antennas based on the current data rate and quality of the wireless connection, ensuring that additional power is only used when necessary to support the required bitrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple antennas are used for MIMO configuration, then uplink bitrate and throughput are improved, but electric power consumption increases
Solution Approach 1:
The patent implements dynamic MIMO configuration where the terminal device can switch between single-antenna and multi-antenna modes based on real-time network conditions and data transmission requirements. The uplink control module continuously monitors channel quality indicators (CQI) and adjusts the number of active transmit antennas accordingly, enabling the system to adapt its resource usage to current needs rather than operating in a fixed state.
Solution Approach 2:
The patent changes the operational parameters of the MIMO system by dynamically adjusting the number of active transmit antennas based on channel quality measurements. When CQI indicates good channel conditions, the system activates multiple antennas to maximize throughput; when channel conditions deteriorate or data rates are low, the system reduces the number of active antennas to conserve power, thus optimizing the trade-off between performance and energy consumption.
2Speed
If multiple antennas are activated for MIMO, then upload speed increases, but battery discharge rate increases
Solution Approach 1:
The system dynamically adjusts the number of active transmit antennas based on real-time monitoring of channel quality indicators (CQI) and data transmission requirements. The uplink control module continuously evaluates whether the improved upload speed from additional antennas justifies the increased power consumption, switching between single-antenna and multi-antenna modes to optimize the balance between upload performance and battery conservation.
Solution Approach 2:
The terminal device periodically measures channel quality and re-evaluates the optimal antenna configuration at regular intervals or when triggered by significant changes in transmission conditions. This periodic reassessment ensures that the system only maintains high-power multi-antenna operation when genuinely beneficial, otherwise transitioning to lower-power single-antenna mode to preserve battery life.
3Use of energy by moving object
If single antenna is used to save power, then energy consumption decreases, but upload time increases
Solution Approach 1:
The patent implements a dynamic configuration system that monitors channel quality indicators (CQI) and data transmission requirements in real-time. When channel conditions are favorable or data rates are high, the system activates multiple antennas to reduce upload time; when channel conditions are poor or data rates are low, the system uses a single antenna to conserve energy, thus dynamically optimizing the trade-off between upload speed and power consumption based on current operational context.
Data Source
Figure 1~2
AI summary
A method for operating a terminal device, wherein a terminal device transmits data to a base transceiver station, BTS, of a cellular network via a wireless connection using a first antenna of the terminal device, a terminal device, a base transceiver station for cellular network and respective computer program products.