Early Termination of Decoding Narrowband Device Power Saving
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Solution Overview
Problem
Narrowband wireless communication devices, such as MTC and NB-IoT devices, face high power consumption due to the need to remain in an active state for multiple repetitions of communication channels, reducing their operational lifespan in remote areas with limited resources.
Innovation Solution
Implementing a method where devices can early terminate decoding of communication channel repetitions if certain conditions are met, such as successful decoding or radio conditions exceeding a threshold, allowing them to enter a low power mode and conserve energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If devices monitor for multiple repetitions of communication channels to ensure reliable reception, then communication reliability is improved, but power consumption increases
Solution Approach 1:
The device performs preliminary decoding attempts on communication channel repetitions and determines early whether successful decoding is achieved. When decoding succeeds before all repetitions are received, the device terminates further monitoring and enters low power mode, thus avoiding unnecessary power consumption while maintaining communication reliability
Solution Approach 2:
The device monitors only a subset of transmitted repetitions rather than all repetitions. By setting a maximum number of repetitions to monitor and terminating early when decoding succeeds, the device performs partial action sufficient for reliable communication without the excessive power consumption of monitoring all repetitions
2Measurement precision
If devices remain in active state for multiple channel repetitions, then decoding accuracy is improved, but operational lifespan is reduced
Solution Approach 1:
The device performs preliminary decoding checks after receiving a certain number of repetitions and determines early whether successful decoding has been achieved. This preliminary action allows the device to terminate monitoring before all repetitions are processed, extending operational lifespan while maintaining decoding accuracy through early success detection
Solution Approach 2:
The device autonomously monitors decoding progress and self-determines when to terminate monitoring based on successful decoding detection. This self-service mechanism allows the device to extend its operational lifespan by avoiding prolonged active states without external control, while maintaining decoding accuracy through intelligent termination decisions
3Reliability
If devices monitor all communication channel repetitions, then communication robustness is improved, but energy waste increases
Solution Approach 1:
The device performs preliminary decoding attempts and determines early whether successful decoding is achieved. By terminating monitoring when decoding succeeds before all repetitions are received, the device avoids energy waste while maintaining communication robustness through early success detection
Solution Approach 2:
The device monitors only a partial set of repetitions rather than all transmitted repetitions. By setting a maximum monitoring limit and terminating early when decoding succeeds, the device performs sufficient action for robust communication without the energy waste of monitoring all repetitions
Data Source
AI summary
Techniques and apparatus for early termination of decoding of communication channels for power saving in narrowband devices are provided. One technique includes monitoring for one or more first repetitions of at least one communication channel from a base station. The device determines, based on the monitoring, whether to refrain from monitoring for one or more second repetitions of the at least one communication channel. The device enters a low power mode if the determination is to refrain from monitoring for the one or more second repetitions of the at least one communication channel.