Receiver Early Decoding for Wireless Power Reduction
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Solution Overview
Problem
Wireless communication receivers consume excessive power due to unnecessary signal reception during good channel conditions, as they decode signals only after receiving all packets in a transmission time interval (TTI), leading to inefficient power management.
Innovation Solution
Implementing an early decoding method where the receiver attempts to decode signals within a predetermined time unit before receiving all signals in a TTI, and switches to a low-power mode if successful, allowing for power reduction by stopping unnecessary signal reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the receiver waits to receive all signals in a TTI before decoding, then decoding accuracy is improved, but power consumption increases due to unnecessary signal reception
Solution Approach 1:
The receiver performs preliminary decoding attempts at predetermined time points before the TTI ends. The decoder tries to decode received signals early, and if successful, the receiver stops receiving signals for the remaining TTI period, thereby reducing power consumption while maintaining decoding accuracy through early success detection
Solution Approach 2:
The receiving operation is made dynamic by conditionally stopping signal reception based on decoding results. The receiver dynamically adjusts its operation mode between continuous reception and early termination based on whether decoding succeeds at the predetermined time point, optimizing the balance between reliability and power consumption
2Use of energy by moving object
If the receiver attempts early decoding before receiving all signals, then power consumption is reduced, but decoding reliability may deteriorate
Solution Approach 1:
The system performs preliminary decoding attempts at predetermined time points within the TTI. By attempting decoding early with the data received up to that point, the system can reduce power consumption if successful, while maintaining the option to continue receiving and attempting decoding again if the early attempt fails
Solution Approach 2:
The receiver performs partial decoding actions at intermediate time points rather than waiting for complete signal reception. This partial action allows early termination and power savings when successful, while the system can perform additional receiving and decoding actions if needed to ensure reliability
Data Source
AI summary
Methods and apparatuses are provided for reducing power consumption by early decoding. It is determined whether a predetermined decoding condition is satisfied upon expiration of a time unit in a transmission time interval. Decoding is performed on a signal that has been received through the time unit in the transmission time interval, when the predetermined decoding condition is satisfied. A controller outputs an instruction signal to a RF processor to set to a low-power mode during a remaining time period of the transmission time interval after the time unit in the transmission time interval, when the decoding is successful. Decoding is performed on the signal that has been received through the RF processor upon expiration of a last time unit of the transmission time interval regardless of the predetermined decoding condition, when the time unit is the last time unit in the transmission time interval.