FDFD MAC Frame Parameter Signaling for WLAN Throughput
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Solution Overview
Problem
The increasing complexity of media access control (MAC) operations in frequency division full duplex (FDFD) wireless local area networks (WLANs) poses challenges in managing access to FDFD communication channels and ensuring efficient multiple device communication.
Innovation Solution
A method for FDFD communication in WLANs involves receiving communication frames with indications of FDFD parameters, determining these parameters, and participating in FDFD operations by transmitting and receiving data in separate frequency segments, with the AP generating and transmitting FDFD operation information frames to facilitate these operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If frequency division full duplex (FDFD) is implemented to improve throughput, then data transmission rate is improved, but media access control operation complexity increases
Solution Approach 1:
The patent segments the communication channel into multiple frequency segments, allowing simultaneous full-duplex communications on different frequency portions. This segmentation enables multiple independent communication streams to coexist, improving overall throughput while managing complexity through structured frequency allocation
Solution Approach 2:
The patent introduces frequency division as an additional dimension for channel access, moving beyond traditional time-division and contention-based approaches. By utilizing the frequency dimension, the system achieves full-duplex capability where devices can simultaneously transmit and receive on different frequency segments, thereby improving productivity without proportionally increasing MAC operation complexity
2Productivity
If multiple communication devices share the FDFD communication channel simultaneously, then channel utilization is improved, but coordination complexity increases
Solution Approach 1:
The patent creates a universal FDFD operation framework that can accommodate multiple communication devices simultaneously sharing the channel. The standardized parameter indication and determination mechanisms provide multi-functional support for various device types and communication scenarios, improving channel utilization while keeping coordination manageable through consistent protocols
Solution Approach 2:
The patent utilizes parameter indication and determination mechanisms where communication frames carry specific parameters that define FDFD operation characteristics. By dynamically adjusting and indicating parameters such as frequency segment assignments and transmission modes, the system enables efficient multi-device coordination without excessive complexity
Data Source
AI summary
A first communication device in a wireless local area network (WLAN) receives a communication frame from a second communication device. The communication frame includes one or more indications of one or more FDFD parameters for an FDFD operation that includes FDFD communications via a first frequency segment and a second frequency segment. The one or more indications includes an indication of a physical layer (PHY) transmission mode that the first communication device is to use for communication in the second frequency segment during the FDFD operation. The first communication device uses the indication of the PHY transmission mode to determine a PHY transmission mode that the first communication device is to use for communication in the second frequency segment during the FDFD operation, and transmits in the second frequency segment according to the PHY transmission mode.