Multi-Link Device Management Frame Exchange Across Links
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Solution Overview
Problem
Current multi-link devices in wireless communications face challenges in efficiently exchanging management frames across links, particularly in supporting cross-link operations as defined by the 802.11be communication protocol, which complicates the transmission and reception of management frames carrying information from one link on another.
Innovation Solution
The method involves transmitting management frames, such as MLD level and link level management frames, across links using techniques like cross-link and link-specific transmissions, where the link ID is indicated in the MAC Header or frame body, enabling the operation of multi-link devices according to received management frames on associated links, and utilizing the 802.11be protocol for enhanced wireless communications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If management frames are transmitted across links using cross-link operations, then the versatility of multi-link operations is improved, but the device complexity increases
Solution Approach 1:
The patent segments management frames into different types (MLD-level frames and link-level frames) with distinct transmission rules. MLD-level frames can be transmitted on any link, while link-level frames are transmitted on specific links. This segmentation allows the system to handle cross-link operations selectively, improving versatility without requiring all devices to support complex cross-link functionality, thus managing device complexity.
Solution Approach 2:
The patent introduces link identifiers (link IDs) as intermediaries to manage cross-link frame transmission. When a management frame needs to be transmitted on a different link than its intended target, the link ID serves as a mediator to identify the correct destination link. This intermediary mechanism enables versatile cross-link operations while keeping the transmission protocol relatively simple and manageable.
2Productivity
If management frames include information from multiple links, then the productivity of information exchange is improved, but the loss of information increases
Solution Approach 1:
The patent segments management information into MLD-level information (applicable to all links) and link-level information (specific to individual links). This segmentation is achieved through separate frame types: MLD-level management frames carry global information, while link-level management frames carry link-specific information. By transmitting these separately or clearly identifying them within frames, the patent improves information exchange efficiency while preventing information loss through proper categorization and transmission routing.
Solution Approach 2:
The patent applies local quality by allowing different parts of the management frame structure to have different information types. The frame structure includes fields that can indicate whether information is MLD-level or link-level, and the transmission behavior adapts locally based on the frame type and destination. This ensures that each piece of information is transmitted with appropriate specificity, maintaining accuracy while improving overall exchange efficiency.
Data Source
AI summary
Embodiments of a method and an apparatus for wireless communications are disclosed. In an embodiment, a method for wireless communications involves transmitting, by a first multi-link device (MLD) to a second MLD, a management frame on at least one of two links associated with the first MLD and the second MLD in a multi-link operation, receiving, by the second MLD from the first MLD, the management frame on at least one of the two links, and operating the second MLD according to the management frame received on at least one of the two links.