Communication Receiver Standby Timing for Lower Power Scanning
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Solution Overview
Problem
Current communication protocols cause significant energy usage in receivers due to repeated sending of data packets until reception, leading to inefficient energy consumption.
Innovation Solution
Implementing a standby mode for receiver circuits between correct data packet reception and the start of the next interval, with the standby time period determined by factors such as acknowledgement receipt, protocol data unit, and clock frequency, reducing energy consumption by minimizing unnecessary scanning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the receiver continuously monitors for data packets to ensure reliable reception, then communication reliability is improved, but energy consumption increases significantly
Solution Approach 1:
The receiver alternates between active monitoring periods and standby periods. During each transmission interval, the receiver activates to monitor for data packets, then enters standby mode for a calculated duration before the next interval. This periodic on-off operation maintains communication reliability while dramatically reducing average energy consumption compared to continuous monitoring.
Solution Approach 2:
The receiver calculates the standby time period in advance based on protocol parameters (PDU length, maximum retransmissions, timing ranges) before entering standby mode. This preliminary calculation ensures the receiver wakes up at the optimal moment to catch the next transmission interval, maintaining reliability without unnecessary extended monitoring periods that would increase energy consumption.
2Reliability
If the receiver stays active to catch retransmitted packets, then data reception reliability is improved, but unnecessary scanning increases energy usage
Solution Approach 1:
The standby time period is dynamically adjusted based on protocol parameters including the length of protocol data units, maximum authorized retransmission counts, and timing ranges for transmission and acknowledgment. This dynamic calculation optimizes the balance between staying active long enough to catch retransmissions and entering standby early enough to minimize energy consumption from unnecessary scanning.
Data Source
AI summary
A method of controlling a receiver of communications includes data packets being transmitted at constant intervals, and circuits of the receiver being, in each interval, set to standby between the correct reception of at least one data packet and a time preceding the beginning of the next interval.