Wake-Up Information Transmission Using Mixed OOK and FSK Modulation
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Solution Overview
Problem
Current WUR technologies utilize on-off keying (OOK) modulation, which results in low spectral efficiency and resource utilization, necessitating improved methods to enhance communication efficiency and reduce power consumption.
Innovation Solution
Implementing a combination of different modulation schemes, such as on-off keying (OOK) and frequency shift keying (FSK), to modulate and demodulate information in an envelope-demodulation scheme, allowing the terminal device to determine wake-up instructions based on multiple modulation formats.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If on-off keying (OOK) modulation is used in WUR technology, then power consumption is reduced, but spectral efficiency and resource utilization deteriorate
Solution Approach 1:
The patent segments the wake-up signal into multiple independent fields (first wake-up field, second wake-up field, third wake-up field) that can be modulated using different modulation schemes. This allows the system to divide the signal transmission task into parts, where some fields use OOK for low power consumption while others use more efficient schemes like FSK or QAM for better spectral efficiency, thereby resolving the contradiction between power consumption and spectral efficiency.
Solution Approach 2:
The patent applies different modulation schemes to different fields within the wake-up signal based on their specific requirements. For example, the first wake-up field may use OOK modulation for low power consumption, while the second wake-up field uses FSK or QAM modulation for higher spectral efficiency. This local differentiation of modulation quality allows the system to optimize both power consumption and spectral efficiency in different parts of the signal.
2Use of energy by moving object
If on-off keying (OOK) modulation is used in WUR technology, then power consumption is reduced, but resource utilization deteriorates
Solution Approach 1:
The patent segments the wake-up signal into multiple independent fields (first wake-up field, second wake-up field, third wake-up field) that can be modulated using different modulation schemes. This allows the system to divide the signal transmission task into parts, where some fields use OOK for low power consumption while others use more efficient schemes like FSK or QAM for better resource utilization, thereby resolving the contradiction between power consumption and resource utilization.
Solution Approach 2:
The patent applies different modulation schemes to different fields within the wake-up signal based on their specific requirements. For example, the first wake-up field may use OOK for low power consumption, while the second wake-up field uses FSK or QAM for higher resource utilization. This local differentiation of modulation quality allows the system to optimize both power consumption and resource utilization in different parts of the signal.
3Productivity
If multiple modulation schemes are used in the wake-up signal, then resource utilization and spectral efficiency improve, but system complexity increases
Solution Approach 1:
The patent segments the wake-up signal into multiple independent fields with different modulation schemes, allowing the receiver to process each field independently according to its modulation type. This segmentation reduces the overall system complexity by breaking down the complex task of handling multiple modulation schemes into manageable, independent processing units.
Solution Approach 2:
The patent introduces dynamic modulation where different fields within the wake-up signal can use different modulation schemes (OOK, FSK, QAM) depending on the specific information being transmitted. This dynamic approach allows the system to adapt the modulation complexity to the actual information requirements, using simpler OOK when sufficient and more complex schemes only when needed, thereby managing system complexity effectively.
4Productivity
If multiple modulation schemes are used in the wake-up signal, then spectral efficiency improves, but detection and measurement difficulty increases
Solution Approach 1:
The patent segments the wake-up signal into multiple independent fields, each with a specific modulation scheme clearly indicated by field position or type. This segmentation allows the receiver to identify and apply the appropriate detection method for each field independently, reducing the overall detection difficulty compared to a unified complex modulation scheme.
Solution Approach 2:
The patent employs dynamic modulation where the modulation scheme for each field is determined by predefined rules or indicators within the signal structure itself. This allows the receiver to dynamically adapt its detection strategy based on the actual signal characteristics, making detection easier compared to static complex modulation while still achieving high spectral efficiency.
Data Source
AI summary
This application provides multiple information transmission methods. An example method performed by a user equipment includes, receiving, in an envelope-demodulation scheme, first indication information and second indication information that are respectively modulated based on different modulation schemes, where a combination of the first indication information and the second indication information indicates whether to wake up a terminal device; and determining, based on the combination of the first indication information and the second indication information, whether to wake up the terminal device. For example, the first modulation scheme is an on-off keying modulation scheme, and the second modulation scheme is a frequency shift keying modulation scheme.