MPDU Delimiter Feedback Mechanism for Wireless Throughput
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, the overhead from MAC header information in MPDU frames limits throughput as it occupies transmission time and is not always necessary for feedback information like acknowledgments and status updates.
Innovation Solution
The method involves generating a MAC protocol data unit (MPDU) delimiter with a feedback indication field and a feedback content field, allowing feedback information to be transmitted without a MAC header, thereby reducing overhead and improving system throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complete MAC header is included in every MPDU frame for feedback information, then the frame structure is standardized and reliable, but the overhead increases and throughput decreases
Solution Approach 1:
The patent extracts only the essential feedback information (acknowledgment, status updates) from the complete MAC header structure and transmits it in a simplified format within the PHY header or as a shortened MPDU delimiter, eliminating unnecessary header overhead while preserving the core feedback function
Solution Approach 2:
The patent segments the feedback transmission into two parts: essential information transmitted in the PHY header or shortened delimiter for immediate feedback, and optional detailed information transmitted in the full MAC header only when needed, allowing flexible overhead management based on actual requirements
2Loss of information
If a complete MAC header is transmitted for every feedback MPDU, then all necessary control information is provided, but the transmission time increases due to overhead
Solution Approach 1:
The patent extracts only the critical control information elements (feedback type, acknowledgment status, buffer status) needed for immediate wireless communication operations and transmits them in a compact format, eliminating redundant header fields that would increase transmission time without adding essential value
3Adaptability or versatility
If MAC header information is included in all MPDUs, then the frames are self-contained and independent, but the overhead occupies valuable transmission time
Solution Approach 1:
The patent creates a universal feedback mechanism that can operate in multiple modes: using simplified delimiters for standard feedback scenarios and full MAC headers when extended functionality is needed, allowing the system to adapt its overhead level based on the specific communication context while maintaining efficiency
Data Source
AI summary
A first communication device generates a media access control (MAC) protocol data unit (MPDU) delimiter having i) a feedback indication field and ii) a feedback content field. The feedback indication field is generated to include a first value that indicates the MPDU delimiter includes the feedback content field rather than an MPDU length field corresponding to a second value of the feedback indication field. The feedback content field is generated to include feedback information such as acknowledgement information regarding a communication frame previously transmitted by a second communication device, or control, management, and/or status information regarding the first communication device that was previously requested by the second communication device. The first communication device then transmits a packet that includes the MPDU delimiter to the second communication device.