Legacy-Compatible Control Frames for 320 MHz Bandwidth Negotiation
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Solution Overview
Problem
Existing wireless communication protocols, such as those conforming to the IEEE 802.11 standard, face challenges in efficiently negotiating bandwidths greater than 160 MHz, leading to inefficiencies in data throughput and compatibility issues between legacy and non-legacy devices.
Innovation Solution
Repurpose bits in the service field of control frames, specifically the scrambler initialization bits and parity bits, to carry enhanced bandwidth information, allowing for bandwidth negotiations up to 320 MHz while maintaining compatibility with legacy devices by conforming to a legacy control frame format.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing wireless communication protocols (IEEE 802.11 standard) are used for bandwidth negotiation, then compatibility with legacy devices is maintained, but bandwidth negotiation is limited to 160 MHz and data throughput efficiency is reduced
Solution Approach 1:
The patent changes the parameter representation in the service field by repurposing existing bits (scrambler initialization bits and parity bits) to carry enhanced bandwidth information. This allows the system to negotiate bandwidths up to 320 MHz while maintaining the same control frame structure, thereby improving bandwidth capability without requiring a complete protocol overhaul.
2Productivity
If control frame format is modified to support enhanced bandwidth information, then bandwidth negotiation up to 320 MHz is enabled, but compatibility with legacy devices is compromised
Solution Approach 1:
The patent makes the service field universally compatible by having it serve multiple functions: it maintains backward compatibility with legacy devices while simultaneously carrying enhanced bandwidth information for modern devices. The repurposed bits allow the same control frame format to work across different device generations, achieving multi-functionality without sacrificing compatibility.
3Adaptability or versatility
If new WLAN communication protocols are developed to support enhanced features, then bandwidth negotiation range is extended, but device complexity increases
Solution Approach 1:
The patent introduces dynamic interpretation of the service field bits. Legacy devices interpret the bits according to the original protocol, while modern devices interpret them as enhanced bandwidth information. This dynamic, context-dependent interpretation allows the system to support extended bandwidth ranges without requiring separate control frame designs for different device types, thereby avoiding increased complexity.
Data Source
AI summary
This disclosure provides methods, devices and systems for enhanced bandwidth negotiation. Some implementations more specifically relate to request-to-transmit (RTS) and clear-to-send (CTS) frame designs that support bandwidth negotiations over a range of bandwidths achievable in accordance with the IEEE 802.11be amendment, and future generations, of the IEEE 802.11 standard. In some implementations, a bandwidth negotiation frame (such as a CTS or RTS frame) may be configurable to support bandwidths greater than 160 MHz. In some aspects, the bandwidth negotiation frame may conform to a legacy control frame format. More specifically, one or more bits of a service field associated with the legacy control frame format may be repurposed to carry enhanced bandwidth information. In some aspects, a recipient of a bandwidth negotiation frame may interpret one or more bits of the service field to carry enhanced bandwidth information when the frame is transmitted by a non-legacy transmitting device.