Wi-Fi 7: Floor-to-Floor
Deploying high-performance Wi-Fi across a multi-story corporate headquarters is no small feat. Recently, we completed a full-scale Wi-Fi 7 rollout, combining Cisco’s latest enterprise hardware and Ekahau predictive design and validation tools to deliver a network that’s both high-capacity and future-ready.
Project Overview: Designing a Robust Wireless Network
The client needed a WLAN capable of supporting modern collaboration tools such as Zoom and Microsoft Teams, a growing fleet of wireless IoT devices, and dense device populations typical of a high-density enterprise environment. In addition, the deployed APs needed to support future client devices and applications over several years.
Beyond device selection, the design had to account for building materials, floor layouts, and potential interference between floors. Wi-Fi 7 offers access to the 6 GHz spectrum, which dramatically increases capacity—but it also introduces challenges like signal attenuation and client compatibility.
Design Approach: Predictive Modeling with Ekahau AI Pro
Before installing a single access point, attenuation tests were performed during the passive surveys. During the surveys, I identified sources of interference and measured attenuation for various office walls, conference rooms, and cubicle types using AP-on-a-stick methodology. These tests quantified signal propagation in real-world conditions and refined the model to accurately reflect the physical environment.
After gathering these metrics, I used predictive design software to simulate the network across all floors. The predictive design accounted for:
- Floor layouts and building materials
- User density and device types
- AP placement, channel reuse, and roaming paths
This combination of predictive modeling and measured attenuation ensured the design was data-driven, precise, and aligned with the realities of the facility, reducing the likelihood of surprises during deployment.
Deployment: Installing to Specification
Deployment was executed under direct oversight to ensure AP placement and configuration aligned with the predictive design. The lead technician received detailed floor plans with exact AP locations. Close coordination between the design team, IT, and facilities ensured that cabling, mounting, and access logistics were completed correctly on every floor.
During deployment, AP channels and transmit power were configured according to the predictive design, ensuring that the network would perform as modeled.
Validation & Optimization: Real-World Testing
Once deployed, we validated the network using the Ekahau Sidekick 2. The active surveys confirmed that, other than a few tweaks, the real-world network matched our design objectives:
- Strong signal coverage throughout the high-density environment
- Minimal co-channel interference
- Seamless roaming between APs
- Stable performance even during video calls or heavy IoT traffic
Even with predictive modeling, real-world validation was essential to confirm these metrics. Factors like furniture placement, client device behavior, and vertical RF bleed between floors can only be fully understood on-site. This thorough testing ensured that both performance and quality-of-service requirements were achieved.
Outcome: A High-Performance, Scalable WLAN
The completed Wi-Fi 7 network delivers secure, high-capacity wireless access for employees and guests, supporting dense device populations and modern applications while remaining scalable for future growth. By combining pre-deployment surveys, predictive modeling, careful deployment, and thorough validation, the network achieves consistent, reliable performance floor-to-floor, rather than simply maximizing peak throughput.
Lessons Learned
- Plan for the Future: Selecting Wi-Fi 7 APs ensures the network can support client and application growth over the next 5–7 years, aligning with the organization’s refresh cycle.
- Predictive Design Reduces Rework: Combining simulation with measured attenuation ensures the design reflects reality.
- Manage Vertical RF Bleed: Careful transmit power and channel planning is essential in multi-floor environments.
- Deployment Oversight Is Critical: Direct oversight ensures APs are installed correctly and configured to spec.
- Validation Confirms Design: Active surveys are necessary to verify SNR, CCI, and coverage targets before commissioning.
- Coordinate Early with IT & Facilities: Proper cabling, mounting, and access logistics are key to a smooth rollout.