Multi-Link Device Coordination for Wireless Throughput
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Solution Overview
Problem
Current wireless local area networks lack a coordinated multi-link device architecture that efficiently manages multiple access points and stations to provide enhanced throughput and user experience, particularly in environments requiring simultaneous communication on multiple links.
Innovation Solution
The implementation of a Multi-Link-Device (MLD) architecture that allows multiple access points (APs) or stations (STAs) to operate together, using frames with MLD elements to indicate affiliation and support multi-link operations, and coordinating Target Wake Time (TWT) agreements to establish trigger-enabled service periods for efficient communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple access points and stations operate independently in traditional WLAN architecture, then device complexity is reduced and ease of operation is maintained, but network throughput and resource utilization efficiency deteriorate
Solution Approach 1:
The patent combines multiple access points and stations into a coordinated multi-link device architecture where multiple APs and STAs are grouped and managed as a unified system. This merging enables shared resources and coordinated operations across multiple links, improving network throughput while managing complexity through structured organization of the combined components.
2Productivity
If traditional single-link communication is used, then device complexity and protocol overhead are minimized, but data transmission capacity and speed deteriorate
Solution Approach 1:
The patent segments the communication system into multiple independent links that can operate simultaneously. Each link functions as a separate communication channel with its own protocol stack, allowing data transmission capacity to scale with the number of links while keeping individual link complexity manageable through modular design.
Solution Approach 2:
The multi-link operation protocol is designed to be universal, allowing the same protocol framework to manage multiple links with different characteristics. This multi-functional protocol handles various operations including data transmission, resource allocation, and coordination across links, reducing the need for separate specialized protocols for each link type.
3Reliability
If continuous communication is maintained across all links, then data transmission continuity is improved, but energy consumption increases
Solution Approach 1:
The patent implements periodic communication cycles where links are activated and deactivated in structured intervals. During active periods, data transmission occurs on available links; during inactive periods, links are put into low-power states. This periodic operation maintains communication continuity through scheduled link activation while significantly reducing energy consumption compared to continuous operation.
Solution Approach 2:
The communication system dynamically adjusts link activation states based on traffic requirements and channel conditions. Links can be dynamically switched between active and sleep modes, with the coordination protocol managing transitions to maintain data continuity. This dynamic approach ensures communication reliability when needed while conserving energy during low-activity periods.
Data Source
AI summary
A method performed by a multi-multi-link device (MMLD) architecture comprising a plurality of access points (APs) may comprise transmitting a frame, by an AP of the MMLD, wherein the frame may include a multi-multi-link device (MMLD) frame element which indicates that the AP is part of a multi-link device (MLD) that is a MMLD. The frame may comprise a beacon, short beacon, probe response, fast initial link setup (FILS) discovery frame, association response frame, or the like, or any appropriate combination thereof. The MMLD element may comprise one or more of an element identifier, length, MMLD identifier, MMLD media access control (MAC) address, partial reporting field, number of reported MLDs field and/or an MLD info field. The MLD may communicate with other MLDs of the multiple MLDs during a transmit wake time (TWT) service period (SP). The MLD may be in a doze state during non-TWT SPs.