Dynamic Multi-Link Configuration for Low-Latency Wireless Networks
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Solution Overview
Problem
Existing wireless communication systems face challenges with unreliable transmissions, increased access latency, and reduced throughput due to interference and congestion in shared spectrum environments, particularly in IEEE 802.11 networks, which affect applications requiring low latency and high reliability.
Innovation Solution
Implementing multi-link (ML) communications across multiple wireless channels using joint, selective, simplex, and duplex transmission modes, along with dynamic link reconfiguration and management by a ML-BSS controller to optimize channel usage and reduce interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If dynamic link configuration is implemented to improve network flexibility and resource utilization, then adaptability is improved, but device complexity increases due to multiple communication links and coordination requirements
Solution Approach 1:
The system segments communication resources into distinct link types (millimeter wave and sub-6 GHz) with separate management mechanisms. Each link type has its own configuration parameters and management procedures, allowing independent optimization and simplifying overall system management despite multiple links.
Solution Approach 2:
The system implements dynamic link configuration where communication parameters such as bandwidth, numerology, and active links are adjusted in real-time based on channel conditions, traffic requirements, and network state. This dynamic adaptation enables flexibility while maintaining manageable complexity through automated control.
2Productivity
If multiple communication links are used to improve data transmission capacity, then productivity is improved, but device complexity increases due to multi-link coordination and management
Solution Approach 1:
The system merges multiple communication links (millimeter wave and sub-6 GHz) into a unified communication framework with coordinated resource allocation. Links are combined to achieve higher throughput while sharing common management functions such as RLC entity management and HARQ processes, reducing redundant complexity.
Solution Approach 2:
The system implements universal RLC entities that can operate across multiple link types with different characteristics. These RLC entities are designed to handle various data radio bearers and support both split and non-split configurations, providing multi-functional capability that reduces the need for link-specific management complexity.
3Adaptability or versatility
If link configuration is changed dynamically to improve network adaptability, then adaptability is improved, but loss of time occurs due to configuration updates and reconnections
Solution Approach 1:
The system performs preliminary configuration setup by establishing RLC entities and configuring parameters in advance before actual data transmission begins. Configuration parameters such as bandwidth, numerology, and link priorities are pre-negotiated and stored, enabling rapid activation when link changes are needed without extensive real-time configuration overhead.
Solution Approach 2:
The system implements feedback mechanisms where channel conditions, link quality, and traffic requirements are continuously monitored and fed back to the configuration manager. This feedback enables intelligent decision-making for link configuration changes, optimizing the timing and nature of updates to minimize disruption and reduce time loss during transitions.
Data Source
Figure 1A
Figure 1B~1D
Figure 2A
AI summary
Methods, systems, and devices related to digital wireless communication, and more specifically, to techniques related to the multi-link operation with dynamic link configuration. In one exemplary aspect, a method for wireless communication includes transmitting a multi-link capability information from a network node indicating the network node is capable of operation on multi-link. In another exemplary aspect, the method includes receiving a multi-link capability indication message and using multi-link association request and response message exchanges to establish or update an association between a station and a network node for operation over one or more wireless links. The multi-link operation can be dynamically configured and reconfigured according to the radio channel condition changes and acquired transmission opportunity.