EDMG PPDU Format for Millimeter-Wave Channel Bonding
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Solution Overview
Problem
Current wireless communication systems in the millimeter-wave band face challenges in achieving high data transmission rates and efficient communication protocols for next-generation networks, particularly in supporting multi-user MIMO and channel bonding techniques to meet growing demand for network capacity.
Innovation Solution
The implementation of an Enhanced Directional Multi-Gigabit (EDMG) Physical Layer Protocol Data Unit (PPDU) format and communication scheme that includes hybrid beamforming, digital precoding, and channel bonding, enabling transmission over multiple 2.16 GHz channels to achieve higher bandwidths and support multi-user MIMO communications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If current wireless communication systems operate in millimeter-wave band with existing PPDU formats, then basic data transmission is achieved, but data transmission rates are insufficient and network capacity is limited
Solution Approach 1:
The patent segments the PPDU into distinct fields (Legacy STF, Legacy CEF, EDMG Header-A, EDMG STF, EDMG CEF, Data, TRN) with specific functions. This segmentation allows the system to maintain backward compatibility while enabling enhanced features like channel bonding and multi-user MIMO, thereby increasing data transmission rates without completely redesigning the protocol
Solution Approach 2:
The patent introduces new dimensions to the communication system by enabling transmission over multiple 2.16 GHz channels simultaneously (channel bonding) and supporting multiple spatial streams (MIMO). This dimensional expansion from single-channel/single-stream to multi-channel/multi-stream architecture significantly increases network capacity and data transmission rates
2Productivity
If single-channel transmission is used, then protocol simplicity is maintained, but bandwidth is limited and data transmission rate cannot reach 30 Gbps
Solution Approach 1:
The patent merges multiple 2.16 GHz channels into a bonded channel configuration, allowing simultaneous transmission over multiple channels. This combining approach enables the system to achieve higher aggregate bandwidth and data transmission rates (up to 30 Gbps) while maintaining the simplicity of individual channel operations
Solution Approach 2:
The enhanced PPDU format serves multiple functions: it maintains compatibility with legacy devices through the Legacy STF and CEF fields, enables channel bonding for increased bandwidth, supports multi-user MIMO for enhanced capacity, and provides training sequences for beamforming. This multi-functionality allows the system to achieve high data transmission rates without requiring completely separate protocols
3Adaptability or versatility
If existing PPDU format is used, then backward compatibility is maintained, but support for multi-user MIMO and channel bonding is insufficient
Solution Approach 1:
The patent embeds enhanced features within the existing PPDU structure by nesting new fields (EDMG Header-A, EDMG STF, EDMG CEF) around and after legacy fields. This nested structure allows the PPDU to maintain backward compatibility while incorporating advanced features like multi-user MIMO and channel bonding, thereby increasing adaptability without proportionally increasing complexity
Data Source
AI summary
Some demonstrative embodiments include apparatuses, devices, systems and methods of communicating a Physical Layer Protocol Data Unit (PPDU). For example, an Enhanced Directional Multi-Gigabit (DMG) (EDMG) station (STA) may be configured to generate a Physical Layer (PHY) PPDU; generate one or more PPDU waveforms corresponding to one or more respective transmit chains for digital beamforming transmission of the PPDU; and transmit the PPDU via the one or more transmit chains over a channel bandwidth of at least 2.16 Gigahertz (GHz) in a frequency band above 45 GHz.