1 Problem Statement: Achieving Coverage Over Large Areas

In large-scale deployments, devices must communicate across distances that exceed the range of any single radio, while maintaining links to shared infrastructure. Extending coverage across larger areas with many devices requires a deliberate strategy. Three primary options are available:

• Increasing Transmission (Tx) power: Extends range but introduces regulatory, energy and interference constraints. Tx power optimization is the primary lever for controlling individual link quality and is the first adjustment made when addressing coverage gaps. However, this approach has limits, regulatory power caps, increased energy consumption, and the risk of interfering with neighboring links in the same network.
• Deploying additional fixed infrastructure (access points or repeaters): Extends coverage by creating additional relay points. This reduces the distance each radio link must span and increases the total number of connection points available. While effective, this approach typically requires wired backhaul and increases infrastructure costs and complexity.
• Adopting a mesh network topology: Distributes the relay function across all participating devices. Rather than depending on fixed infrastructure, each node can forward traffic for its neighbors, dynamically extending coverage as the network grows. Mesh is particularly well-suited to environments where devices are numerous, wired backhaul is impractical, and coverage must span multiple rooms or floors. It provides built-in redundancy, self-healing capability, and scalability without linear infrastructure for cost growth.

Mesh networking is the recommended architecture for large node deployments requiring coverage, scalability, and resilience. When combined with optimized Tx power settings, mesh provides the most robust and cost-effective solution for extending network reach.