Multi-Link WLAN Setup for Throughput and Interference Control
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Solution Overview
Problem
Existing wireless LAN standards face limitations in supporting high-throughput and reliable communication, particularly in high-density environments, with challenges in channel utilization and interference management across multiple frequency bands.
Innovation Solution
A wireless communication method and terminal utilizing a multi-link approach, where multiple links are established with distinct BSS colors, shared and link-specific parameters, and coordinated activation times, enabling efficient channel access and interference management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If multiple frequency bands (2.4 GHz, 5 GHz, 6 GHz) are used to provide high throughput, then communication speed is improved, but channel management complexity and interference increase
Solution Approach 1:
The patent segments the wireless communication system into multiple independent links operating at different frequency bands (2.4 GHz, 5 GHz, 6 GHz). Each link is managed separately with its own parameters, allowing the system to handle multiple frequency bands without overwhelming complexity in any single band.
Solution Approach 2:
The patent introduces a multi-link dimension to the traditional single-link wireless communication. By adding the link identifier and multi-link parameters to the management frame structure, the system can distinguish and manage multiple concurrent links, effectively adding a dimensional layer to channel management.
2Productivity
If multiple links operate simultaneously to increase throughput, then productivity is improved, but interference between links increases
Solution Approach 1:
The patent applies local quality by assigning distinct characteristics to each link, including unique link identifiers, separate parameter sets (TXOP, CCA threshold, NAV), and individual BSS colors. This allows each link to be optimized independently while operating simultaneously, reducing mutual interference.
Solution Approach 2:
The management frame structure serves as an intermediary that carries multi-link setup elements, allowing coordinated control between multiple links. The BSS color mechanism acts as a mediator to distinguish between different BSSs operating on the same frequency, preventing confusion and interference.
3Productivity
If link-specific parameters are added to manage multiple links, then channel utilization is improved, but message size increases
Solution Approach 1:
The patent implements partial action by including link-specific parameters only when necessary for a particular link operation. The management frame structure allows selective inclusion of parameters based on the specific link configuration needs, avoiding unnecessary information for all links when only one link is active.
Solution Approach 2:
The patent merges common parameters across multiple links into a unified structure, with link-specific parameters appended only when needed. This combining approach reduces redundant information while maintaining the ability to manage multiple links with different requirements.
Data Source
AI summary
Disclosed is a station which communicates with an access point (AP) multi-link device using a plurality of links. The AP multi-link device comprises: a transceiver, and a processor. The processor receives, by using the transceiver, a management frame from the AP multi-link device, and obtains, from the management frame, a multi-link setup element including information required for setting the plurality of links. The multi-link setup element includes a common part including information corresponding to all links signaled by the multi-link setup element, and link-specific parts independently including information corresponding to each of the plurality of links signaled by the multi-link setup element.