NDP Announcement Frame Format for 320 MHz RU Indication
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Solution Overview
Problem
The existing IEEE 802.11ax standard's NDP announcement frame format and parameter configuration are insufficient to support the larger bandwidths required by the IEEE 802.11be standard, specifically up to 320 MHz, necessitating enhancements for 240 MHz, 160 MHz+80 MHz, and 160+160 MHz bandwidths.
Innovation Solution
A new format for the NDP announcement frame is defined, including a subfield for indicating bandwidth information to identify resource units (RUs) at various channel bandwidths, such as 320 MHz, 160+160 MHz, 240 MHz, and 160+80 MHz, by redefining the RU Start Index and RU End Index subfields to accommodate these larger bandwidths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the existing IEEE 802.11ax NDP announcement frame format is used, then backward compatibility is maintained, but the bandwidth support is limited to 160 MHz and cannot accommodate 320 MHz or other larger bandwidths
Solution Approach 1:
The patent applies dynamics by making the frame format adjustable and adaptable. The NDP announcement frame structure is designed to be dynamic, allowing it to accommodate different bandwidth configurations (160 MHz, 240 MHz, 320 MHz) through configurable fields. The RU Start Index and RU End Index subfields can be dynamically adjusted based on the operating bandwidth, enabling the same frame format to serve multiple bandwidth requirements without requiring separate fixed formats for each bandwidth type.
Solution Approach 2:
The patent applies parameter changes by modifying the numerical and structural parameters of the frame format to support larger bandwidths. Specifically, the RU Start Index and RU End Index subfields are reconfigured with new parameter ranges and interpretations that correspond to 240 MHz and 320 MHz bandwidths. This allows the frame to encode resource unit configurations appropriate for wider bandwidths while maintaining the same basic frame structure, thereby improving bandwidth adaptability without proportionally increasing complexity.
2Productivity
If the NDP announcement frame is extended to support larger bandwidths (240 MHz, 320 MHz), then throughput is improved, but the frame format becomes more complex
Solution Approach 1:
The patent applies universality by designing a multi-functional NDP announcement frame format that can serve multiple bandwidth requirements with a single unified structure. The frame is designed to be universal, accommodating 160 MHz, 240 MHz, and 320 MHz bandwidths through the same basic format with configurable fields. This eliminates the need for separate dedicated frame formats for each bandwidth type, thereby achieving improved throughput for larger bandwidths without proportionally increasing the complexity of frame processing and management.
Solution Approach 2:
The patent applies dynamics by making the frame format adjustable and adaptable. The NDP announcement frame structure is designed to be dynamic, allowing it to accommodate different bandwidth configurations (160 MHz, 240 MHz, 320 MHz) through configurable fields. The RU Start Index and RU End Index subfields can be dynamically adjusted based on the operating bandwidth, enabling the same frame format to serve multiple bandwidth requirements without requiring separate fixed formats for each bandwidth type.
3Adaptability or versatility
If new subfields are added to indicate bandwidth information for larger bandwidths, then support for 320 MHz is achieved, but the frame structure becomes more complex
Solution Approach 1:
The patent applies dynamics by making the frame format adjustable and adaptable. The NDP announcement frame structure is designed to be dynamic, allowing it to accommodate different bandwidth configurations (160 MHz, 240 MHz, 320 MHz) through configurable fields. The RU Start Index and RU End Index subfields can be dynamically adjusted based on the operating bandwidth, enabling the same frame format to serve multiple bandwidth requirements without requiring separate fixed formats for each bandwidth type.
Solution Approach 2:
The patent applies parameter changes by modifying the numerical and structural parameters of the frame format to support larger bandwidths. Specifically, the RU Start Index and RU End Index subfields are reconfigured with new parameter ranges and interpretations that correspond to 240 MHz and 320 MHz bandwidths. This allows the frame to encode resource unit configurations appropriate for wider bandwidths while maintaining the same basic frame structure, thereby improving bandwidth adaptability without proportionally increasing complexity.
Data Source
AI summary
A communication method, includes: determining a first message frame, wherein the first message frame at least includes a subfield for indicating bandwidth information and the subfield for indicating bandwidth information is configured to identify configuration information for resource units (RUs) at a first channel bandwidth; and sending the first message frame.