STR Multi-Link Operation With Dynamic Power, MCS, and Bandwidth
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Solution Overview
Problem
Existing solutions for STR MLO classify pairs of links in a MLD as either STR or non-STR rigidly, leading to inefficient use of channels due to underlying STR constraints, resulting in wasted resources and suboptimal spectrum utilization.
Innovation Solution
A flexible approach is introduced to select and adjust communication parameters such as TX power, MCS, and signal bandwidth dynamically to enable STR MLO in STR constrained pairs of links, allowing for efficient spectrum utilization and reduced latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If pairs of links are classified rigidly as either STR or non-STR, then the classification simplicity is improved, but the spectrum utilization efficiency deteriorates
Solution Approach 1:
The patent changes the classification parameters from a rigid binary state (STR/non-STR) to a flexible continuous state by introducing communication parameter values (TX power, MCS, signal bandwidth) that can be adjusted to enable STR operation. This allows links previously classified as non-STR to become STR-capable under specific parameter configurations, thereby improving spectrum utilization without significantly increasing system complexity.
Solution Approach 2:
The patent introduces dynamic adjustment of communication parameters to enable STR operation on previously non-STR links. Instead of a static classification, the system dynamically selects parameter values (transmit power, modulation and coding scheme, bandwidth) based on current conditions, allowing the STR capability to adapt and change over time, thus improving resource utilization efficiency.
2Productivity
If communication parameters are adjusted dynamically to enable STR on constrained links, then the spectrum utilization is improved, but the system complexity increases
Solution Approach 1:
The patent manages system complexity by systematically adjusting a limited set of key communication parameters (TX power, MCS, signal bandwidth) rather than introducing complex new mechanisms. The base station selects from predefined parameter values or adjusts existing parameters, which simplifies the implementation compared to completely new classification systems while still achieving improved spectrum utilization.
3Manufacturing precision
If STR capability is announced per pair of links, then the setup accuracy is improved, but the operational flexibility deteriorates
Solution Approach 1:
The patent resolves the contradiction between accurate setup and operational flexibility by making the STR capability dynamic rather than static. While the initial setup accurately identifies STR-capable link pairs, the system maintains flexibility by allowing parameter adjustments during operation, enabling links to transition between STR and non-STR states based on current communication conditions, thus achieving both precision and adaptability.
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AI summary
Apparatuses and methods for simultaneous transmit and receive (STR) multi-link operations (MLO) are disclosed. In one embodiment, a multi-link device (MLD) is configured to select at least one communication parameter value for a pair of radio links to enable STR on the pair of radio links between the MLD and a second MLD, the second MLD comprising a non-access point, non-AP, station, STA, and the selected at least one communication parameter value comprising a value of at least one of: at least one first communication parameter for a first link in the pair and at least one second communication parameter for a second link in the pair. In one embodiment, a MLD is configured to transmit information about a pair of radio links; and perform a multi-link operation, MLO, on the pair of radio links using at least one communication parameter value based at least in part on the transmitted information.