Dynamic Subchannel Negotiation for QoS-Aware Frame Exchange
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Solution Overview
Problem
Existing wireless communication technologies lack dynamicity and negotiation mechanisms in subchannel or subband operations between Access Points (APs) and non-AP devices, leading to inefficiencies in channel utilization and QoS management.
Innovation Solution
A Dynamic Subchannel Operation (DSO) mode management method that includes sending and receiving DSO mode management frames to negotiate channel bandwidth and maximum supported spatial streams, enabling flexible frame exchange based on DSO parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If dynamic subchannel operation is implemented without negotiation mechanism, then channel switching flexibility is improved, but device compatibility and operation reliability deteriorate
Solution Approach 1:
The patent implements a negotiation mechanism where the first device sends a DSO mode management frame to the second device to obtain feedback on DSO mode status. This feedback loop ensures both devices agree on the operational mode before channel switching, resolving the contradiction between switching flexibility and device compatibility.
Solution Approach 2:
The patent requires preliminary negotiation before actual channel switching occurs. The DSO mode management frame is sent in advance to confirm both devices support the same operation mode, preventing compatibility issues during the actual channel switching process.
2Adaptability or versatility
If fixed channel bandwidth and spatial streams are used, then device complexity is reduced, but adaptability to different QoS requirements deteriorates
Solution Approach 1:
The patent enables dynamic adjustment of channel bandwidth and spatial streams based on QoS requirements. The system can switch between different operational modes (e.g., 80MHz/2SS, 160MHz/4SS) depending on the service needs, providing adaptability without requiring complex fixed configurations for all scenarios.
Solution Approach 2:
The patent changes operational parameters (channel bandwidth and spatial streams) dynamically based on QoS requirements. By allowing these parameters to vary rather than being fixed, the system adapts to different service needs while maintaining manageable complexity through standardized parameter sets.
3Productivity
If DSO mode negotiation is implemented, then channel utilization efficiency is improved, but communication overhead increases
Solution Approach 1:
The negotiation process is streamlined so that devices autonomously determine their operational mode through the DSO mode management frame exchange. The system self-configures based on mutual capability assessment, reducing the need for external intervention and minimizing negotiation overhead while maintaining efficient channel utilization.
Data Source
AI summary
A channel operation method and a communication device are provided. The method is performed by a device, and includes: sending a dynamic sub-channel operation (DSO) mode management frame to another device. The DSO mode management frame is used for indicating that a DSO mode between the other device and the device is an enabling mode or a non-enabling mode. The enabling mode is a mode in which target devices are allowed to perform frame exchange by a DSO method according to a first parameter set. The first parameter set is indicated by the DSO mode management frame, and the first parameter set includes at least one of a channel bandwidth and a supported maximum spatial stream.