Mixed-Format WiGig PPDU for High-Rate Legacy-Compatible Links
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Solution Overview
Problem
Current WiGig technology at 60-GHz millimeter wave band struggles to match the high data transmission rates of recent wired digital interfaces like USB 3.5 and HDMI 1.3, while maintaining compatibility with the IEEE 802.11 WLAN standard.
Innovation Solution
The implementation of a wireless communication device that generates and transmits a physical layer protocol data unit (PPDU) with a legacy preamble, header, non-legacy header, and identification information, supporting variable bandwidth and backward compatibility through a mixed format PPDU, which includes a legacy preamble and header, and a non-legacy header with information about variable bandwidth usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If WiGig technology uses traditional PPDU format without non-legacy header, then backward compatibility with IEEE 802.11 WLAN standard is maintained, but data transmission rate cannot reach several tens of Gbps comparable to USB 3.5 or HDMI 1.3
Solution Approach 1:
The PPDU format is segmented into distinct parts: legacy preamble, legacy header, and non-legacy header. This segmentation allows legacy devices to process the first two parts for basic compatibility while new devices can access the non-legacy header for enhanced functionality including higher data transmission rates
Solution Approach 2:
The non-legacy header acts as an intermediary element that bridges legacy and next-generation WiGig standards. It contains identification information and variable bandwidth usage information that enables smooth transition and coexistence between different protocol versions without disrupting legacy operations
2Productivity
If WiGig technology adopts fixed bandwidth allocation, then implementation is simpler, but it cannot adapt to variable bandwidth requirements needed for achieving several tens of Gbps transmission rates
Solution Approach 1:
The system transitions from fixed bandwidth allocation to dynamic bandwidth allocation. The non-legacy header includes variable bandwidth usage information that allows the system to adapt bandwidth allocation in real-time based on transmission requirements, enabling higher data rates while managing complexity through structured information fields
3Adaptability or versatility
If WiGig technology transmits only legacy format PPDUs, then legacy device compatibility is ensured, but next-generation features like variable bandwidth and higher data rates cannot be utilized
Solution Approach 1:
The non-legacy header includes identification information that acts as a marker or indicator, similar to a color change signal. This identification information allows receiving devices to quickly recognize and differentiate between legacy and non-legacy PPDUs, enabling appropriate processing without loss of critical format information
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.