Multi-Domain Wireless Spectrum Allocation for Interference Mitigation
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Solution Overview
Problem
There is a shortage of available spectrum for wireless communication, particularly for unlicensed computer-to-computer and computer-to-peripheral communications, due to limited frequency bands and interference issues, despite the establishment of multiple regulatory domains and techniques to avoid interference.
Innovation Solution
A computing device is equipped with a system that can dynamically transmit information across multiple regulatory domains, including licensed and unlicensed domains, by identifying available subchannels, adjusting transmission power, and using error control coding and modulation schemes based on channel conditions, to maximize bandwidth and minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If multiple regulatory domains are established with frequency separation techniques, then interference between wireless users is reduced, but the available spectrum for wireless communication remains insufficient
Solution Approach 1:
The patent combines multiple regulatory domains (licensed and unlicensed) into a unified communication system. The system simultaneously accesses both ITU-R IMT-2000 licensed spectrum and ISM unlicensed spectrum (2.4 GHz and 5 GHz bands) to transmit data, effectively merging previously separate frequency resources into a single available bandwidth pool for wireless communication.
Solution Approach 2:
The patent transitions from single-domain frequency usage to multi-dimensional spectrum access by operating across different regulatory domains simultaneously. This adds a new dimension to spectrum utilization by combining licensed and unlicensed bands, effectively expanding the available frequency space beyond traditional single-domain limitations.
2Quantity of substance
If unlicensed domains are used to increase available bandwidth, then more frequencies become available for computer-to-computer communications, but interference and collision with other unlicensed users increases
Solution Approach 1:
The patent uses licensed domain transmissions as an intermediary mechanism to protect unlicensed domain communications. By transmitting error correction codes and control information through the licensed domain (which has regulated access), the system creates a protected communication layer that reduces vulnerability to interference in the unlicensed domain, effectively mediating between the two spectral resources.
Solution Approach 2:
The system dynamically changes transmission parameters including power levels, modulation schemes, and coding rates based on channel conditions in both licensed and unlicensed domains. This allows the system to adapt to varying interference levels and optimize performance across different spectral environments, adjusting operational parameters to maintain reliable communication despite unlicensed domain congestion.
3Reliability
If error control coding and modulation schemes are used to maximize bandwidth utilization, then transmission reliability improves, but device complexity increases
Solution Approach 1:
The patent segments the data stream into multiple channels with different protection levels. Critical control information and error correction codes are transmitted through the more reliable licensed domain, while data payload can be transmitted through unlicensed domains. This segmentation allows the system to achieve high overall reliability without applying complex error correction to every bit of data, reducing overall processing complexity.
Data Source
AI summary
A wireless communication system that concurrently communicates information in multiple regulatory domains to facilitate audio/video media streaming and other high bandwidth operations. One domain may be licensed and the other may be unlicensed. Transmission in the licensed domain may occur in white space in the domain, and the amount of information transmitted in that domain may be limited by regulations. The amount of information conveyed in the licensed domain may also depend on channel conditions in either or both of the domains. As a result, the relative amount of information transmitted in each domain may vary dynamically. The system includes a transmitter that dynamically determines weighting coefficients applied to each of a plurality of channels to set power levels in both domains to achieve a desired metric for the overall communication. A corresponding receiver assembles the substreams into a stream that can then be displayed or otherwise processed.