Multi-Link WLAN Reestablishment With Adaptive STR and NSTR Switching
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Solution Overview
Problem
Existing wireless LAN technologies face challenges in efficiently managing and reconfiguring multi-link operations to optimize communication throughput and reduce interference in multi-link environments.
Innovation Solution
A method and apparatus for performing non-simultaneous and simultaneous transmit and receive operations on multiple links, allowing dynamic reconfiguration of link information through modulation and coding scheme (MCS) and spatial stream adjustments based on channel conditions and device status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If non-simultaneous transmit and receive (NSTR) operation is performed on multiple links, then interference between links is reduced, but communication throughput is limited due to sequential operations
Solution Approach 1:
The system dynamically switches between NSTR and STR operations based on real-time channel conditions and device capabilities. The operation mode is not fixed but adapts to changing environmental factors, allowing the system to optimize between interference reduction and throughput maximization.
Solution Approach 2:
The patent changes the operational parameter from static NSTR to dynamic STR/NSTR switching. By adjusting the transmission and reception timing parameters based on channel quality indicators and device status, the system can transition between sequential and simultaneous operations to resolve the contradiction.
2Productivity
If simultaneous transmit and receive (STR) operation is performed on multiple links, then communication throughput is improved, but interference between links increases
Solution Approach 1:
The system adjusts operational parameters dynamically, changing from fixed STR to adaptive STR/NSTR switching based on channel conditions. When channel quality is good, STR is used to maximize throughput; when interference becomes problematic, the system switches to NSTR mode.
Solution Approach 2:
The patent implements feedback mechanisms where devices exchange information about their transmission and reception status, channel conditions, and interference levels. This feedback enables the system to make informed decisions about whether to maintain STR operation or switch to NSTR, resolving the throughput-interference contradiction.
3Productivity
If multi-link reconfiguration is performed dynamically, then communication efficiency is optimized, but device complexity and control overhead increase
Solution Approach 1:
The patent creates a universal reconfiguration framework that can handle multiple operation modes (STR, NSTR, link addition, link removal) through a single set of information elements and procedures. This multi-functional approach reduces the need for separate complex control mechanisms for each scenario.
Solution Approach 2:
The system uses parameter-based reconfiguration where changes in communication mode are achieved by modifying specific parameters (such as operation mode indicators, link identifiers, and timing parameters) rather than restructuring the entire system. This reduces control overhead by focusing changes on specific parameters.
Data Source
AI summary
Disclosed are a method and apparatus for dynamic reestablishment of multi-links. The method for a first device comprises the steps of performing, with a second device, first communication according to an NSTR operation on one link from among a first link and a second link; transmitting, to the second device on the one link, STR reconfiguration information including one or more information elements necessary for a conditional STR operation; and on the basis of the one or more information elements, performing, with the second device on the first link and the second link, second communication according to the conditional STR operation.