Multi-band Network Node Selectable Backhaul Fronthaul Configurations
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Solution Overview
Problem
Home networks face challenges in accommodating increased data transfer speeds and bandwidth due to rising latency-sensitive applications, such as gaming and remote work, while also managing a higher client load and network complexity.
Innovation Solution
A multi-band network node with selectable backhaul/fronthaul configurations provides high-speed internet support (>2 Gbps, <4 ms latency) by utilizing multiple bands for communication, dynamic assignment of connections, and hardware quality-of-service to split traffic flows, extending network coverage and capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-band operation is implemented to increase bandwidth and data transfer speed, then network capacity and throughput are improved, but device complexity and hardware requirements increase
Solution Approach 1:
The network node is designed to perform multiple functions across different frequency bands (2.4 GHz, 5 GHz, 6 GHz) using a unified hardware platform. The same node can operate as a backhaul node, fronthaul node, or access point, eliminating the need for separate dedicated devices for each function and reducing overall system complexity while increasing network capacity.
Solution Approach 2:
The system dynamically configures operational parameters including selectable backhaul/fronthaul modes, adaptive frequency selection, and dynamic traffic routing based on real-time network conditions. This dynamic adaptation allows the network to optimize performance across multiple bands without requiring manual configuration, managing complexity through automation.
2Productivity
If multiple frequency bands are used to support high-speed data transfer, then throughput is improved, but latency management becomes more difficult
Solution Approach 1:
The network node segments traffic into different queues based on priority and latency requirements. High-priority traffic (such as real-time gaming or video conferencing) is separated from best-effort traffic, allowing low-latency applications to receive dedicated bandwidth and processing attention across multiple frequency bands, thereby maintaining low latency while achieving high throughput.
Solution Approach 2:
The system changes operational parameters dynamically by selecting optimal frequency bands and modulation schemes based on current network conditions and traffic patterns. When latency is critical, the system may prioritize lower frequency bands with better propagation characteristics or adjust transmission parameters to minimize processing delays, thus managing latency while maintaining high throughput capabilities.
3Area of stationary object
If network nodes are interconnected to extend coverage, then area coverage is improved, but coordination complexity increases
Solution Approach 1:
Interconnected network nodes continuously exchange feedback information including signal strength, channel conditions, and traffic patterns. This feedback enables automatic coordination of operations, such as dynamic backhaul/fronthaul selection and interference management, allowing nodes to extend coverage area while reducing coordination complexity through automated decision-making based on real-time conditions.
Solution Approach 2:
The network architecture creates equipotential communication paths by providing multiple equal-quality backhaul and fronthaul options across different frequency bands. Nodes can dynamically select from equivalent paths based on current conditions, simplifying coordination by eliminating the need for complex centralized control and enabling peer-to-peer optimization across the extended network.
4Quantity of substance
If more clients are connected to increase network capacity, then available bandwidth per user decreases, but quality of service for latency-sensitive applications deteriorates
Solution Approach 1:
The network node segments available bandwidth across multiple frequency bands and prioritizes latency-sensitive traffic. By separating real-time applications (gaming, video conferencing) from non-real-time traffic and allocating dedicated resources, the system maintains quality of service for critical applications even as the total number of connected clients increases, preventing bandwidth sharing from degrading latency performance.
Solution Approach 2:
The system performs preliminary actions by pre-configuring quality of service parameters and reserving bandwidth for latency-sensitive applications before traffic begins. This ensures that when latency-critical traffic arrives, dedicated resources are already available, maintaining reliable service quality regardless of the total client load on the network.
Data Source
AI summary
A multi-band network node has selectable backhaul/fronthaul configurations. Network nodes provide multi-band operation to take advantage of higher Internet speeds and to support lower latency (>2 Gbps, <4 ms latency) applications. A greater Wi-Fi device count (capacity) is supported by implementing communication over additional bands. Increased bandwidth is made available between connected nodes by selectively combining backhaul throughputs. Hardware quality-of-service (QoS) is provided by splitting traffic flows for low latency and data applications. Network coverage is extended by dynamic assignment of backhaul connections and by configuring unused backhauls as fronthauls.