RF Transmitter Rolling Fixed Carrier Frequency Switching
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Solution Overview
Problem
Existing wireless radio frequency transmission systems face a trade-off between avoiding interference using multiple carrier frequencies and maintaining backwards compatibility, leading to compromised performance.
Innovation Solution
A wireless radio frequency transmitter that automatically switches between a rolling carrier frequency and a predetermined fixed carrier frequency, selected from a pool of candidate frequencies, to ensure reliable transmission while supporting legacy systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple carrier frequencies are used to avoid interference, then transmission reliability is improved, but device complexity and cost increase
Solution Approach 1:
The transmitter dynamically switches between a rolling carrier frequency and a fixed carrier frequency based on detection of end user interface assertions. This dynamic frequency selection allows the system to adapt to interference conditions while maintaining manageable device complexity through automated control.
Solution Approach 2:
The system changes the carrier frequency parameter from a fixed value to a rolling frequency that varies based on transmission needs. This parameter change enables interference avoidance while the automated frequency selection process keeps device complexity in check.
2Reliability
If multiple carrier frequencies are used to avoid interference, then transmission reliability is improved, but backwards compatibility is lost
Solution Approach 1:
The frequency usage is segmented into two distinct modes: a rolling carrier frequency for enhanced reliability and a fixed carrier frequency for backwards compatibility. This segmentation allows the system to serve both legacy and advanced receivers appropriately.
Solution Approach 2:
The transmitter is designed with multi-functionality to support both rolling and fixed carrier frequencies, enabling it to communicate with both legacy receivers expecting fixed frequencies and advanced receivers that can utilize rolling frequencies for improved reliability.
3Device complexity
If a fixed carrier frequency is used for backwards compatibility, then device complexity is reduced, but interference avoidance capability is lost
Solution Approach 1:
The system transitions from a static fixed frequency to a dynamic rolling frequency that automatically adapts to avoid interference. The automated frequency selection and switching mechanisms maintain device complexity at acceptable levels while providing interference avoidance capabilities.
Data Source
AI summary
A wireless radio frequency transmitter (400), upon detecting (101) an end user assertion of an end user interface and in automatic response thereto, uses a first rolling carrier frequency to transmit (102) a message. Upon then determining (104) that the end user is continuing to assert this end user interface, this transmitter then re-transmits (105) that message using a predetermined fixed carrier frequency. By one approach, the first rolling carrier frequency is selected from amongst a pool of candidate carrier frequencies using a carrier frequency calculation formula. By another approach, this carrier frequency is selected from one or more tables that comprise a plurality of different carrier frequencies.