Multi-Link WLAN Negotiation for Fair Channel Access
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Solution Overview
Problem
The existing WLAN standards lack definitions for multi-link operations, necessitating methods for negotiating link configurations and transmission schemes between AP MLDs and STA MLDs, while considering fairness with conventional STAs and defining channel access schemes based on transceiver capabilities.
Innovation Solution
A method for negotiating multi-link transmission parameters between a first and second communication node, determining links and transmission schemes, and transmitting data frames across multiple links, including capability information exchange and channel state monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-link transmission is implemented without defined negotiation methods, then throughput can be increased, but system complexity and difficulty of operation increase
Solution Approach 1:
The patent applies parameter changes by introducing standardized negotiation parameters for multi-link transmission, including link configuration parameters, primary link selection parameters, and transmission scheme parameters. These parameters enable systematic control of complex multi-link operations through defined negotiation procedures between AP MLD and STA MLD, transforming the unstructured complexity into manageable parameter-based control.
2Productivity
If multi-link transmission is implemented without defined negotiation methods, then data transfer capability is improved, but ease of operation deteriorates
Solution Approach 1:
The patent applies preliminary action by establishing link configuration negotiation and primary link selection procedures before actual multi-link transmission begins. The AP MLD and STA MLD exchange capability information, negotiate supported links, and determine the primary link in advance, so that when transmission starts, the operational framework is already in place, making the system easier to operate.
3Productivity
If multiple links are used for transmission, then throughput is improved, but channel access complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the channel access process into separate procedures for each link. The system negotiates and manages channel access independently for the primary link and secondary links, allowing complex multi-link channel access to be broken down into manageable segments that can be controlled and monitored separately, reducing overall complexity.
4Adaptability or versatility
If primary link configuration is not defined, then multi-link operation flexibility is improved, but reliability deteriorates
Solution Approach 1:
The patent applies universality by establishing a universal primary link selection mechanism that can work across different multi-link configurations. The defined procedures for selecting and managing the primary link provide a reliable foundation that works consistently regardless of the specific number or type of links being used, ensuring reliability while maintaining flexibility through parameter-based configuration.
Data Source
AI summary
The present invention relates to an operating method of a first communication node in a communication system, comprising the steps of: negotiating with a second communication node with respect to a parameter for multi-link transmission; determining, on the basis of the parameter, a plurality of links for performing the multi-link transmission, and the transmission method by which the multi-link transmission is performed; and transmitting, in the plurality of links, a data frame to the second communication node by means of the transmission method. Therefore, the communication node can efficiently set and change links.