Harmonized LP-WUR Signal Design for Multi-Modulation Decoding
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Solution Overview
Problem
Low power wakeup receivers (LP-WUR) face challenges in decoding information bits due to inherent characteristics of On-Off Keying (OOK) modulation, and non-OOK modulation signals cannot be decoded by LP-WURs that only support OOK demodulation, leading to inefficiencies in power consumption and communication.
Innovation Solution
A method and apparatus that utilize a harmonized design for sending information bits to LP-WURs through modulated signals with overlaid waveforms of multiple modulation schemes, allowing for efficient decoding and reducing power consumption by accommodating different modulation schemes like OOK and OFDM.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If OOK modulation is used for broadcasting wakeup signals to LP-WUR, then the LP-WUR can decode the signal, but the decoding process is time-consuming due to inherent characteristics of OOK modulation
Solution Approach 1:
The patent combines multiple modulation schemes (OOK and non-OOK) into a single harmonized signal structure that can be simultaneously decoded by LP-WURs with different capabilities. The signal is designed such that OOK-based LP-WURs can extract wakeup information while also supporting non-OOK modulations, merging the advantages of both approaches into one unified communication mechanism.
Solution Approach 2:
The harmonized signal design makes the transmission system universal by accommodating both OOK and non-OOK modulation schemes within the same signal framework. This allows a single transmission to serve multiple receiver types, enhancing the system's versatility and reducing the need for separate signaling mechanisms.
2Use of energy by moving object
If non-OOK modulation is used for broadcasting signals, then power consumption is reduced, but LP-WURs that only support OOK demodulation cannot decode the information bits
Solution Approach 1:
The patent merges OOK and non-OOK modulation schemes into a harmonized signal structure where both modulation types coexist and can be simultaneously decoded. This allows the system to benefit from the lower power consumption of non-OOK modulations while maintaining backward compatibility with OOK-only LP-WURs through the combined signal design.
Solution Approach 2:
The harmonized signal design creates a universal transmission system that can be decoded by both OOK-based and non-OOK-based LP-WURs. This multi-functionality ensures that regardless of which modulation scheme is used, all compatible receivers can successfully decode the information bits, eliminating the trade-off between power saving and decoding capability.
3Adaptability or versatility
If a harmonized design with overlaid waveforms is used, then multiple modulation schemes can be accommodated, but the signal structure becomes more complex
Solution Approach 1:
The patent segments the signal into distinct waveform components, each carrying information according to different modulation schemes. By dividing the signal structure into separable segments with specific waveform characteristics, the system achieves multi-modulation compatibility while maintaining manageable complexity through structured organization of the signal components.
Data Source
AI summary
A communication apparatus includes a low power wakeup receiver (LP-WUR) and a processor. The processor is configured to perform operations including: receiving a modulated signal from a network apparatus via the LP-WUR, wherein the modulated signal has a harmonized design that accommodates overlaid waveforms of one or more modulation schemes; and deriving information bits from demodulating the modulated signal.