EDMG PPDU Encoding with Channel Bonding for MU-MIMO Throughput
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Solution Overview
Problem
Current wireless communication systems in the millimeter-wave band face challenges in efficiently transmitting high-speed data over directional multi-gigabit channels, particularly in supporting multiple user MIMO communications and ensuring data alignment across users, which limits data transmission rates and network capacity.
Innovation Solution
The implementation of an Enhanced Directional Multi-Gigabit (EDMG) Physical Layer Protocol Data Unit (PPDU) format that includes advanced encoding schemes, such as LDPC encoding, and channel bonding techniques to support SU and MU MIMO transmissions, ensuring data alignment and increased channel bandwidth, thereby enhancing data transmission rates up to 30 Gbps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If current wireless communication systems transmit data in millimeter-wave band, then high-speed data access is provided, but data transmission rates and network capacity are limited due to inability to efficiently support multiple user MIMO communications and data alignment
Solution Approach 1:
The PPDU structure is segmented into distinct fields including legacy fields, EDMG fields, and user-specific fields. Each field serves a specific function in the multi-user MIMO communication, allowing for organized transmission and reception of data to multiple users simultaneously while maintaining system manageability
Solution Approach 2:
The patent introduces spatial dimensionality by supporting multiple spatial streams and multiple users in the same time-frequency resource. Through beamforming and spatial multiplexing, the system transmits independent data streams to different users simultaneously, effectively increasing data transmission rates without proportionally increasing system complexity
2Productivity
If channel bonding techniques are implemented to increase channel bandwidth, then data transmission rates increase, but device complexity and encoding requirements increase
Solution Approach 1:
Multiple 2.16 GHz channels are bonded together to form wider channels (4.32 GHz, 6.48 GHz, or 8.64 GHz). The patent combines multiple narrowband channels into broadband channels, allowing data transmission rates to scale with bandwidth while using standardized LDPC encoding schemes that manage complexity through systematic design
Solution Approach 2:
The system dynamically adjusts channel bandwidth parameters by bonding different numbers of 2.16 GHz channels based on transmission requirements. This allows flexible scaling of data transmission rates while maintaining compatible encoding structures, balancing performance needs with device complexity
3Productivity
If LDPC encoding and advanced encoding schemes are used to enhance data transmission, then network capacity increases, but processing complexity and computational requirements increase
Solution Approach 1:
The LDPC encoding scheme includes systematic structures where parity bits are generated based on data bits through predefined matrices. The encoding process is self-contained with built-in error correction capabilities, allowing receivers to autonomously decode and correct errors without additional complex processing, thus increasing network capacity while controlling processing 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 encode a Physical Layer (PHY) Service Data Unit (PSDU) of at least one user in an EDMG PHY Protocol Data Unit (PPDU) according to an EDMG Low-Density Parity-Check (LDPC) encoding scheme, which is based at least on a count of one or more spatial streams for transmission to the user; and transmit the EDMG PPDU in a transmission over a channel bandwidth in a frequency band above 45 Gigahertz (GHz).