WLAN MAC for Punctured Channels via Segmented Frequency Acknowledgment
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Solution Overview
Problem
Current IEEE 802.11 WLAN standards face challenges in managing media access control for channel puncturing and simultaneous transmission across multiple frequency bands, leading to increased complexity in acknowledging transmissions across frequency gaps.
Innovation Solution
A method and device configuration for transmitting and receiving MAC layer data units across frequency segments with gaps, using integrated circuits to generate and process PHY data units, enabling simultaneous transmission and acknowledgment across multiple frequency segments within a communication channel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If channel puncturing and simultaneous transmission in multiple RF bands is used, then throughput is improved, but device complexity increases
Solution Approach 1:
The patent divides the communication channel into multiple frequency segments (first frequency segment, second frequency segment, etc.) separated by gaps. Each segment can be independently managed for transmission and acknowledgment, allowing the system to handle punctured channels and multi-band operations by treating them as separate manageable units rather than a single complex channel.
2Productivity
If channel puncturing is implemented, then data transmission efficiency is improved, but media access control complexity increases
Solution Approach 1:
The communication channel is segmented into multiple frequency portions with gaps between them. Each frequency segment is handled independently for MAC operations including transmission, acknowledgment, and block acknowledgments. This segmentation allows efficient utilization of available spectrum while simplifying MAC management by treating each segment as a separate entity.
Solution Approach 2:
The patent implements a universal MAC framework that can handle multiple frequency segments, punctured channels, and multi-RF band operations through a unified approach. The same MAC mechanisms (ACKs, block ACKs, transmission protocols) are applied universally across all frequency segments, reducing the need for separate complex management procedures for each scenario.
Data Source
AI summary
A first communication device receives one or more physical layer (PHY) data units, which include a plurality of media access control (MAC) layer data units, from a second communication device via a communication channel that includes a first frequency segment and a second frequency segment separated by a gap in frequency, including simultaneously i) receiving a first MAC layer data unit via the first frequency segment of the communication channel, and ii) receiving a second MAC layer data unit via the second frequency segment of the communication channel. The first communication device generates acknowledgement information for the plurality of MAC layer data units, and transmits the acknowledgment information to the second communication device via one or both of i) the first frequency segment and ii) the second frequency segment.