Multi-Link Device EMLSR Operation Frame Mechanism
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Solution Overview
Problem
Current multi-band aggregation and coordination technologies in Wi-Fi communication systems lack a defined mechanism for enhanced multi-link single-radio (EMLSR) operation, limiting the efficient utilization of multiple frequency bands for high-throughput and low-latency communication.
Innovation Solution
A communication method and device that determine and send a message frame with information identifying EMLSR operation on multiple links, including link identifiers and handover latency, to enable efficient spectrum utilization and system throughput improvement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-band aggregation and coordination is implemented, then system throughput is improved, but device complexity increases due to the need for new MAC mechanisms
Solution Approach 1:
The patent segments the multi-link operation into distinct modes (EMLSR and EMLMR) with specific characteristics. Each mode is defined by separate parameters including handover latency values, allowed simultaneous links, and radio resource allocation rules. This segmentation allows the complex multi-band aggregation to be managed through standardized, discrete operational states rather than a monolithic complex system.
Solution Approach 2:
The patent utilizes parameter changes to distinguish between different operational modes. Specifically, it defines handover latency parameters (32 microseconds for EMLSR, 64 microseconds for EMLMR) and uses these parameter differences to enable flexible configuration of multi-link operations. By changing these parameters, the system can adapt between different throughput and latency requirements without requiring fundamentally different hardware or complex reconfiguration.
2Productivity
If EMLSR operation is enabled on multiple links, then spectrum utilization is enhanced, but handover latency increases
Solution Approach 1:
The patent applies partial action by enabling EMLSR operation on only one link at a time rather than all links simultaneously. This limited scope allows the system to achieve high spectrum utilization on the active link while maintaining manageable handover latency. The system can switch between links based on availability and requirements, rather than attempting to optimize all links simultaneously which would increase complexity and latency.
3Speed
If multiple frequency bands are aggregated, then communication rate is improved, but coordination complexity increases
Solution Approach 1:
The patent creates a universal MAC mechanism that handles multiple frequency bands (2.4 GHz, 5 GHz, 6 GHz) through a single unified framework. The same EMLSR/EMLMR operational modes and handover procedures apply across all bands, eliminating the need for separate coordination mechanisms for each frequency band. This multi-functionality reduces coordination complexity while maintaining high communication rates across different bands.
Solution Approach 2:
The patent establishes equipotentiality by treating all frequency bands and links equally in terms of operational parameters and coordination rules. Each link is managed using the same EMLSR/EMLMR framework with consistent handover latency parameters and resource allocation mechanisms. This equal treatment simplifies coordination compared to having different management approaches for different bands, while still enabling aggregated high-rate communication across multiple bands.
Data Source
AI summary
A method for communication on multiple links is applied to a multi-link device, and includes: determining a first message frame, wherein the first message frame includes first information configured to identify that the multi-link device performs enhanced multi-link single-radio (EMLSR) operation on ones of the multiple links; and sending the first message frame.