ANQP Request Frame for Multi-Link TDLS Setup
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Solution Overview
Problem
Current multi-link communication technologies, particularly in Wi-Fi, face challenges in establishing efficient tunneled direct link setups (TDLS) across multiple frequency bands, as existing mechanisms do not adequately support the requirements for low-latency transmission and bandwidth aggregation in scenarios like video transmission and augmented/virtual reality applications.
Innovation Solution
The proposed solution involves using an Access Network Query Protocol (ANQP) request frame that includes TDLS capability information to establish and manage TDLS functions across multiple links, enabling direct communication between multi-link devices without relying on a single access point, by identifying necessary MAC addresses, link identifiers, and service set identifiers within the ANQP request and response frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing TDLS mechanisms are used without multi-link support, then device complexity is reduced, but transmission efficiency and bandwidth aggregation capability deteriorate
Solution Approach 1:
The patent segments the TDLS capability information into multiple link-specific components, where each link can independently carry ANQP request frames with TDLS capability information. This allows the system to scale with the number of links while maintaining manageable complexity at each link level.
Solution Approach 2:
The patent creates a universal ANQP request frame structure that can operate in both single-link and multi-link modes. The same frame format and processing logic work across different link configurations, reducing the need for separate mechanisms and thereby managing complexity while enabling multi-link productivity.
2Speed
If multi-link TDLS is implemented, then bandwidth aggregation and low-latency transmission are improved, but the complexity of managing multiple frequency bands deteriorates
Solution Approach 1:
The patent performs preliminary action by including TDLS capability information in ANQP request frames before actual data transmission begins. This allows devices to negotiate and establish multi-link TDLS configurations in advance, so that when data transmission starts, the links are already optimized and ready, reducing latency without adding runtime management complexity.
3Ease of operation
If ANQP request frames include TDLS capability information for multi-links, then direct communication establishment between multi-link devices is improved, but the complexity of protocol processing deteriorates
Solution Approach 1:
The patent uses the existing ANQP (Access Network Query Protocol) framework as an intermediary to carry TDLS capability information. By leveraging this established protocol structure, the patent avoids creating a completely new complex protocol while still enabling multi-link TDLS capability exchange, thereby simplifying the overall processing complexity.
Data Source
AI summary
The communication method may include: determining an access network query protocol (ANQP) request frame in one of multi-links, in which the ANQP request frame includes first TDLS capability information of an initiator to implement a TDLS function in the multi-links; and sending the ANQP request frame.