Wireless Receiver Power Control via Partial ID Packet Processing
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Solution Overview
Problem
Wireless interface devices face significant battery power consumption issues due to the need to transition from a low power state to a high power state for functions like scanning and receiving packets, which limits their battery lifetime.
Innovation Solution
Implementing a wireless receiver system that wakes only a portion of the processing circuit from a low power state to process a partial ID packet, correlates the processed portion, and compares the result to a correlation threshold, allowing for reduced power consumption and potential false hit reduction through additional validation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wireless receiver processes full ID packets in operational state, then detection reliability is improved, but power consumption increases
Solution Approach 1:
The patent divides the ID packet processing into segments: first processing only a portion of the ID packet to generate a correlation result, then conditionally processing the remaining portion if the first correlation exceeds a threshold. This segmentation allows the system to achieve reliable detection while minimizing the time the processing circuit remains in the operational state, thus reducing power consumption.
Solution Approach 2:
The patent implements partial action by processing only a portion of the ID packet initially rather than the full packet. The processing circuit wakes from low power state, processes the partial packet, and only wakes again if needed for further processing. This partial processing approach maintains detection reliability while significantly reducing power consumption compared to processing full packets every time.
2Use of energy by moving object
If the processing circuit remains in low power state longer, then power consumption decreases, but detection speed worsens
Solution Approach 1:
The patent applies preliminary action by processing a portion of the ID packet first to generate an initial correlation result before committing to full packet processing. This preliminary processing allows the system to quickly determine whether further processing is needed, enabling faster detection decisions while minimizing unnecessary wake-ups and power consumption.
Solution Approach 2:
The processing circuit operates in periodic cycles: wake from low power state, process partial packet, evaluate correlation result, then either return to sleep or proceed with full processing. This periodic action pattern optimizes both detection speed and power consumption by ensuring the circuit wakes only when necessary and processes data in efficient bursts.
3Reliability
If additional processing validation is performed, then false hit reduction is improved, but power consumption increases
Solution Approach 1:
The patent uses partial action for validation by processing only a portion of the ID packet initially to generate a correlation result. Full processing and additional validation are performed only when the initial correlation exceeds a threshold, indicating a potential match. This approach reduces false hits through proper validation while minimizing power consumption by avoiding unnecessary full processing of non-matching packets.
Solution Approach 2:
The system implements feedback through threshold comparison: the correlation result from partial processing is compared against a threshold, and this feedback determines whether full processing should proceed. This feedback mechanism ensures that additional processing validation is performed only when justified by the initial correlation result, thereby reducing false hits while controlling power consumption.
Data Source
AI summary
Various embodiments are disclosed relating to wireless systems, and also relating to power control techniques for wireless devices. One disclosed embodiment comprises a wireless receiver that includes a processing circuit. In one example embodiment, at least a portion of the processing circuit may wake from a low power state to an operational state to receive and process only a portion of an ID packet during the operational state. The portion of the ID packet that is received and processed may be less than a full ID packet, which may provide power savings.