Wireless Mesh Network Link Scheduling for High-Frequency Path Loss
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Solution Overview
Problem
Current wireless mesh networks for cellular systems operating in high frequency bands face challenges such as high path loss, interference, and the need for dense deployments, which increase costs and complexity, especially in urban areas where traditional cellular network deployments are difficult and costly.
Innovation Solution
A wireless mesh network system that includes mesh nodes, user devices, and a gateway facility, with processors and storage to establish and manage wireless backhaul and access links, schedule transmissions, and handle user plane data, enabling efficient spectrum use and reducing the need for dense base station deployments by using mesh networking principles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional cellular network deployment is used in high frequency bands, then network coverage and reliability are improved, but deployment cost and complexity increase significantly
Solution Approach 1:
The network is segmented into distributed mesh nodes that can be deployed independently throughout the coverage area. Each mesh node operates as an autonomous unit with backhaul links to parent nodes, allowing modular deployment without requiring centralized infrastructure. This segmentation enables cost-effective coverage expansion while reducing per-node deployment complexity.
Solution Approach 2:
Mesh nodes serve as intermediary elements between the core network and end users. These intermediate nodes relay traffic through wireless backhaul links, eliminating the need for direct fiber connections to every location. The intermediary mesh nodes enable network extension into areas where traditional direct connectivity is prohibitively expensive or complex.
2Reliability
If dense deployment of base stations is used in high frequency bands, then path loss and blockage issues are mitigated, but infrastructure costs increase
Solution Approach 1:
The solution merges the functions of base stations and access points into unified mesh nodes that can be deployed at lower cost. By combining backhaul and access link functionality in single mesh nodes, the system reduces the total number of infrastructure elements needed compared to traditional dense base station deployments. This merging maintains link reliability through multiple paths while lowering per-node deployment costs.
Solution Approach 2:
The network transitions from a two-dimensional ground-based base station deployment to a three-dimensional mesh architecture where nodes can be positioned at varying heights and locations. This spatial dimensionality allows for optimized path routing that avoids ground-level blockages and reduces the effective density requirement, thereby lowering infrastructure costs while maintaining reliability.
3Ease of manufacture
If wireless mesh networking is used in cellular systems, then deployment cost is reduced, but spectral efficiency and interference management become more challenging
Solution Approach 1:
The mesh network implements feedback mechanisms where each node reports channel conditions, interference levels, and traffic demands to parent nodes and the central controller. This feedback enables dynamic adjustment of transmission parameters, power levels, and routing paths to minimize interference. The feedback loop allows the system to adapt to changing conditions and maintain spectral efficiency despite the simplified deployment architecture.
Solution Approach 2:
The mesh network employs dynamic resource allocation and adaptive routing that can change in real-time based on traffic patterns and interference conditions. Links can be dynamically reconfigured, and nodes can switch between different parent nodes or routing paths to avoid interference. This dynamic behavior allows the system to maintain high spectral efficiency while preserving the cost benefits of simplified mesh deployment.
4Ease of operation
If carrier-sense multiple access protocol is used in mesh networks, then ease of deployment is improved, but spectral efficiency decreases compared to scheduler-based access
Solution Approach 1:
The mesh nodes are designed with multi-functionality, supporting both carrier-sense multiple access for simplicity and scheduler-based access for enhanced efficiency. The system can universally accommodate different access methods depending on the deployment scenario, allowing mesh nodes to function in both unlicensed and licensed spectrum. This universality enables the system to maintain deployment ease while achieving improved spectral efficiency when needed through hybrid operation.
Data Source
AI summary
Among other things, aspects, features, and implementations of wireless mesh networks and wireless mesh network devices are described.