Mixed-Format WiGig PPDU for Backward-Compatible Higher Data Rates
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Solution Overview
Problem
Current WiGig technology, as defined by IEEE 802.11ad, has a data transmission rate of up to 6.7 Gbps, which is insufficient to match the speeds of recent wired digital interfaces like USB 3.5 and HDMI 1.3, which enable data transmission of several tens of Gbps, necessitating an enhancement to achieve comparable wireless data transmission rates while maintaining backward compatibility with the IEEE 802.11 WLAN standard.
Innovation Solution
The implementation of a wireless communication device and method that generates and transmits a physical layer protocol data unit (PPDU) with a mixed format, incorporating a legacy preamble and header, a non-legacy header with identification information, and a data field, allowing for increased data transmission rates by supporting variable bandwidth while maintaining compatibility through the use of legacy components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If WiGig technology uses the IEEE 802.11ad standard with legacy format, then backward compatibility is maintained, but data transmission rate is limited to up to 6.7 Gbps
Solution Approach 1:
The PPDU is segmented into distinct sections: a legacy preamble and header for compatibility, and a non-legacy header containing identification information and data fields for enhanced performance. This segmentation allows legacy devices to process the initial portion while advanced devices can utilize the full structure for higher data rates.
Solution Approach 2:
The patent introduces a new dimension to the existing PPDU structure by adding a non-legacy header section with identification information. This additional layer enables advanced functionality and higher transmission rates without disrupting the original legacy structure that older devices rely upon.
2Productivity
If WiGig technology increases data transmission rate to match wired interfaces, then speed competitiveness improves, but compatibility with legacy IEEE 802.11 WLAN standard may be compromised
Solution Approach 1:
The PPDU structure is designed to serve multiple functions: the legacy preamble and header ensure compatibility with existing IEEE 802.11 WLAN standards, while the non-legacy header with identification information enables advanced high-speed transmission capabilities. This multi-functional design allows a single system to support both legacy and advanced operations.
Solution Approach 2:
The identification information in the non-legacy header acts as an intermediary that signals to receiving devices whether to process the packet using legacy methods or enhanced methods. This intermediary element enables smooth transition and coexistence between old and new transmission protocols.
3Productivity
If a mixed format PPDU with non-legacy header is introduced, then data transmission rate can be increased, but device complexity increases
Solution Approach 1:
The identification information is placed in the non-legacy header at the beginning of the data section, allowing receiving devices to quickly determine how to process the packet before attempting to decode the full structure. This preliminary identification simplifies the processing logic by enabling early decision-making about packet handling.
Data Source
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 in the PPDU and a transmitter that transmits the generated MF control PHY PPDU.