PHY Air Interface Reuse for 60 GHz Wi-Fi CFO Accuracy
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Solution Overview
Problem
The transition from conventional Wi-Fi bands (2.4 GHz, 5 GHz, 6 GHz) to the 60 GHz band requires new hardware due to significant bandwidth and waveform differences, leading to higher costs and potential communication issues with carrier frequency offset (CFO) errors.
Innovation Solution
Implementing a physical layer air interface design that uses similar waveforms and bandwidths for both traditional bands and the 60 GHz band, with tightened CFO accuracy requirements and upclocking preambles and data portions to accommodate 60 GHz communications using legacy hardware.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If new hardware is implemented for 60 GHz band communications, then communication reliability is improved, but device cost increases
Solution Approach 1:
The patent enables legacy Wi-Fi hardware to perform both traditional band (2.4 GHz, 5 GHz, 6 GHz) and 60 GHz band communications by implementing a unified physical layer air interface design. The same hardware infrastructure is made multi-functional through software-defined radio techniques and configurable RF front-ends, eliminating the need for separate dedicated hardware for each frequency band while maintaining communication reliability across all bands.
Solution Approach 2:
The patent employs parameter changes by adjusting RF front-end configurations, clock accuracy settings, and waveform parameters to accommodate 60 GHz operations using legacy hardware. By dynamically changing operational parameters rather than hardware architecture, the system achieves 60 GHz band compatibility without requiring completely new device implementations, thus reducing device cost while maintaining communication reliability.
2Ease of manufacture
If legacy hardware is used for 60 GHz band, then device cost is reduced, but carrier frequency offset errors increase
Solution Approach 1:
The patent introduces an intermediary physical layer air interface layer that mediates between legacy hardware capabilities and 60 GHz band requirements. This intermediary layer implements waveform generation, modulation, and signal processing functions that compensate for the limitations of legacy hardware, including carrier frequency offset compensation mechanisms that enable reliable 60 GHz communications using cost-effective legacy hardware platforms.
Solution Approach 2:
The patent implements dynamic parameter adjustment and adaptive signal processing to compensate for carrier frequency offset errors in legacy hardware operating at 60 GHz. The system dynamically adjusts clock accuracy requirements, waveform parameters, and synchronization mechanisms based on real-time channel conditions, enabling legacy hardware to maintain communication reliability despite inherent frequency offset challenges.
3Productivity
If different waveforms and bandwidths are used for 60 GHz band, then communication performance is improved, but hardware complexity increases
Solution Approach 1:
The patent replaces physical hardware differentiation with software-defined radio techniques and configurable signal processing algorithms. Instead of implementing separate hardware architectures for different frequency bands with different waveforms and bandwidths, the system uses software-configurable RF front-ends and digital signal processing to dynamically adjust waveform parameters, modulation schemes, and bandwidth allocations, thereby achieving high data rates at 60 GHz without increasing hardware complexity.
Data Source
AI summary
This disclosure provides methods, devices and systems for communicating over a 60 GHz band and reusing legacy hardware for communication over sub-6 bands. Certain aspects are directed to outputting, for transmission to a second wireless device, a first packet, wherein the first packet is output via a radio frequency (RF) front end defined by a first clock accuracy requirement having an acceptable error rate that is lower than a legacy clock accuracy requirement, and wherein the first packet is output for transmission via a first band. Certain aspects are directed to obtaining, from the second wireless device, a second packet via the first band.