Wireless Resource Mapping for Interference Mitigation
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Solution Overview
Problem
Current communication systems face reliability issues due to inter-symbol interference (ISI) and inter-carrier interference (ICI) caused by multipath propagation and frequency-domain windowing, which degrade the quality of data transmission in high-data-rate applications like multimedia communications.
Innovation Solution
A method that divides a communication channel resource into regions based on transmission reliability, prioritizes data portions based on importance, and maps more critical data to more reliable regions within the channel resource, using a combination of prioritization, ranking, and mapping techniques to optimize data transmission in cellular communication systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If frequency-domain windowing is applied to contain RF energy, then adjacent channel interference is reduced, but inter-carrier interference (ICI) is generated at both edges of the system's RF band
Solution Approach 1:
The patent applies different quality treatments to different parts of the signal spectrum. Frequency-domain windowing is applied selectively to contain RF energy in specific regions while managing ICI generation at band edges. This local differentiation resolves the contradiction by optimizing each region's characteristics rather than applying a uniform approach across the entire spectrum.
2Object-affected harmful factors
If time-domain slot windowing is applied to contain RF energy within current slot, then energy containment is improved, but inter-symbol interference (ISI) is generated at both ends of the time slot
Solution Approach 1:
Time-domain windowing is applied with different characteristics at different portions of the time slot. The windowing function is designed to provide good energy containment in the main body of the slot while managing ISI generation at the temporal boundaries. This local quality differentiation resolves the contradiction between energy containment and ISI reduction.
3Productivity
If higher data rates are used for multimedia communications, then user data rate is improved, but system reliability is downgraded due to interference
Solution Approach 1:
The patent changes key transmission parameters including modulation schemes, data rates, and windowing characteristics to optimize the balance between throughput and reliability. By dynamically adjusting these parameters based on channel conditions and service requirements, the system achieves high data rates for multimedia while maintaining reliability through appropriate parameter selection and interference management.
Data Source
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AI summary
A communication device and method of allocating spectrum resources in a communication system to protect data to be transmitted are disclosed. The communication channel resource is divided temporally to form regions. Data to be transmitted is separated into data portions. Each data portion is able to be transmitted over one of the regions. The data portions are prioritized based on the importance of the data portion. The regions are ranked based on the transmission reliability thereon. The prioritized data portions are mapped to the ranked regions such that more important data portions are mapped to more reliable regions and less important data portions are mapped to less reliable regions. The prioritized data is output temporally in order of importance to enable the mapping of the prioritized data.