60 GHz OFDM Numerology for Channelization Alignment
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Solution Overview
Problem
Existing wireless communication systems face challenges in achieving channelization alignment and efficient operation at 60 GHz frequencies, particularly in aligning with existing Wi-Fi standards like 802.11ac, due to differences in bandwidth and subcarrier spacing.
Innovation Solution
The proposed solution involves upclocking the 802.11ac numerology by a factor of 6.75 to align channelization at 60 GHz, maintaining compatibility with 802.11ad/ay channels, and modifying the preamble or payload to optimize operation in the new band while reusing the baseband design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If 60 GHz operation uses existing Wi-Fi standards like 802.11ac, then compatibility with existing standards is maintained, but channelization alignment and efficient operation at 60 GHz cannot be achieved due to differences in bandwidth and subcarrier spacing
Solution Approach 1:
The patent applies parameter changes by scaling the subcarrier spacing and bandwidth parameters of the 802.11ac numerology by a factor of 6.75 to achieve channelization alignment at 60 GHz. This allows the system to maintain compatibility with existing Wi-Fi standards while adapting the numerical parameters to suit the higher frequency operation, resolving the contradiction between standard compatibility and channelization efficiency
2Productivity
If 60 GHz operation uses upclocked 802.11ac numerology, then channelization alignment is achieved, but significant hardware changes may be required
Solution Approach 1:
The patent employs universality by designing a baseband processor that can operate with both legacy 802.11ac numerology and upclocked 60 GHz numerology. This multi-functionality allows the same hardware to support channelization alignment at 60 GHz without requiring completely new hardware designs, thereby achieving channelization alignment while minimizing hardware changes
3Device complexity
If baseband design is reused for 60 GHz operation, then hardware changes are minimized, but optimization for the new frequency band may be compromised
Solution Approach 1:
The patent applies dynamics by making the baseband processor configurable and adaptable to different numerology settings. The processor can dynamically switch between legacy 802.11ac parameters and upclocked 60 GHz parameters, allowing it to be optimized for the new frequency band while reusing the same hardware platform. This configurability enables performance optimization without requiring significant hardware changes
Data Source
AI summary
This disclosure describes systems, methods, and devices related to 60 GHz operation. A device may utilize a legacy baseband data for a generation of a plurality of orthogonal frequency-division multiplexing (OFDM) symbols for a 60 GHz communication. The device may select a number of subcarriers based on a bandwidth selection. The device may generate an upclock of the legacy baseband data by an upclocking factor that aligns a first bandwidth with a legacy bandwidth. The device may assign a first subcarrier spacing for a first group of bandwidths. The device may assign a second subcarrier spacing for a second group of bandwidths. The device may generate the plurality of OFDM symbols using an upclocking mechanism based on a bandwidth for the 60 GHz communication. The device may cause to send a plurality of OFDM symbols to a station device.