Mixed-Format WiGig PPDU with Legacy and NG60 Headers

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Solution Overview

Problem

Current WiGig technology limits data transmission rates to around 6.7 Gbps, which is not comparable to recent wired digital interfaces like USB 3.5 or HDMI 1.3, necessitating an enhancement in wireless communication to match these speeds while maintaining backward compatibility with the IEEE 802.11 WLAN standard.

Innovation Solution

The introduction of next-generation WiGig technology that supports variable bandwidth transmission, using a mixed format PPDU structure combining legacy and new headers, allowing for increased data transmission rates through modulation schemes like control, single carrier, and OFDM, while ensuring compatibility with legacy devices by including a legacy preamble and header.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If WiGig technology uses legacy IEEE 802.11 WLAN standard, then backward compatibility is maintained, but data transmission rate is limited to around 6.7 Gbps

Engineering Contradiction:

Improvebackward compatibilityVSAvoiddata transmission rate

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The PPDU structure is segmented into distinct parts: a legacy preamble and header compatible with IEEE 802.11 standards, and a new data portion supporting higher transmission rates. This segmentation allows legacy devices to process the preamble and header while next-generation devices can utilize the enhanced data transmission capabilities.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system dynamically adapts between legacy and enhanced modes by incorporating both legacy and new header formats in the PPDU structure. Devices can selectively process portions of the transmission based on their capabilities, enabling flexible operation across different data rate requirements while maintaining backward compatibility.

Inventive Principle:

Principle #15Dynamics

2Productivity

If WiGig technology increases data transmission rate to match wired interfaces, then productivity improves, but compatibility with legacy IEEE 802.11 devices deteriorates

Engineering Contradiction:

Improvedata transmission rateVSAvoidbackward compatibility

Core Design Contradiction:

ProductivityVSAdaptability or versatility

Solution Approach 1:

The PPDU structure is designed with universal compatibility by incorporating both legacy and enhanced header formats. This multi-functionality allows the same transmission medium to serve both legacy IEEE 802.11 devices and next-generation high-speed devices, enabling a single system to fulfill multiple performance requirements.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

Different portions of the PPDU structure have different qualities: the legacy preamble and header maintain original IEEE 802.11 characteristics for backward compatibility, while the new data portion implements enhanced modulation and coding schemes for higher data rates. Each section is optimized for its specific function while contributing to overall system compatibility.

Inventive Principle:

Principle #3Local quality

Data Source

PatentEP3258625B1Wireless communication apparatus and wireless communication method

Publication Date: 2019.07.24 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD

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AI summary

A wireless communication device serving as an NG60 WiGig device includes a PPDU generator that generates an MF control PHY PPDU (physical layer protocol data unit) including a legacy preamble, a legacy header, an NG60 header (a non-legacy header), a data field, and identification information indicating that the non-legacy header is included and a transmitter that transmits the generated MF control PHY PPDU.