Receiver Component Power Management for Wireless Battery Savings
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Solution Overview
Problem
Mobile device receivers in wireless communication systems, such as UMTS, consume excessive battery power as they remain powered on throughout data receiving intervals, even after data has been correctly decoded, leading to unnecessary battery drain.
Innovation Solution
Implementing a method to power down receiver components within a data transmission frame once all payload packet data has been correctly decoded, and only powering up for scheduled overhead bit transmission periods, utilizing a Cyclic Redundancy Check (CRC) to ensure data integrity and determining the warm-up period required for receiver components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the receiver component remains powered on throughout the entire data receiving interval to ensure all received data can be decoded, then data reception reliability is improved, but battery power consumption increases
Solution Approach 1:
The receiver component is powered on in advance before the data receiving interval begins, allowing it to perform a warm-up procedure. This preliminary action ensures the receiver is fully operational and ready to decode data reliably when the interval starts, while limiting the powered-on duration to only what is necessary for preparation, thus avoiding continuous power consumption throughout the entire interval.
Solution Approach 2:
Instead of maintaining continuous power throughout the data receiving interval, the receiver is powered on periodically - specifically, only during the warm-up period before data reception begins and then only when needed to decode incoming data. This periodic activation pattern reduces overall power consumption while maintaining reliability by ensuring the receiver is active during critical operations.
2Use of energy by moving object
If the receiver component is powered down early to save battery power, then battery power consumption is reduced, but the receiver may miss overhead data transmissions
Solution Approach 1:
The system uses feedback mechanisms to monitor the reception status of payload data and determines whether the receiver can be powered down. By continuously assessing whether all payload packets have been successfully received and decoded, the system makes informed decisions about power management, ensuring overhead data is not missed while maximizing power savings during periods when reception is complete.
Solution Approach 2:
The receiver is powered on in advance of the data receiving interval to complete its warm-up procedure before data reception begins. This preliminary power activation ensures the receiver is fully operational and ready to capture both payload and overhead data from the first moment of transmission, preventing any overhead data from being missed while still allowing for early power down after the warm-up period if payload data is successfully received.
Data Source
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AI summary
The present aspects relate to methods and apparatuses to power off a modem receiver or components of the receiver at a time prior to the end of the frame based on data in the frame being received and properly decoded before the end of the frame. In an aspect, the apparatuses and methods provide power saving in a wireless device, and include receiving data within a frame at a user equipment, determining whether all payload packet data has been correctly decoded prior to an end of the frame, and powering down a receiver component for a portion of a remainder of the frame in response to determining that all payload packet data has been correctly decoded and where a first time period to a next scheduled overhead bit transmission period of a slot in the frame is greater than a second time period corresponding to a warm-up period for the receiver component.