The network numbers are in for the first football game at Levi’s Stadium, and they are pretty amazing: According to Dan Williams, the vice president of technology for the San Francisco 49ers, the Levi’s Stadium Wi-Fi network carried 2.13 terabytes of data during last Sunday’s preseason game, with a peak of 24,775 fans on the Wi-Fi network at the same time. Those numbers are comparable to the latest Super Bowl at MetLife Stadium in New Jersey, where according to AT&T and Verizon there was approximately 2.5 TB of data used on wireless networks.
The kicker to the Niners’ stats — they do NOT include any traffic figures from the Levi’s Stadium DAS, the distributed antenna system that is meant to provide enhanced cellular coverage in the stadium. What follows is an email Q-and-A with Williams, who kindly answered our extensive list of questions. The real question is, if Niners fans are hitting terabyte levels during preseason games, what’s going to happen when the season starts for real? And the instant replay function in the team app is live? Read on for some great insight from Williams. Additional editor’s note: The companies talked about include Aruba Networks, the provider of Wi-Fi gear; Brocade, provider of back-end networking gear and integration; DAS Group Professionals, the integrator and deployment team behind the DAS (the network of small antennas that improve in-building cellular coverage).
Mobile Sports Report: what was the peak number for simultaneous Wi-Fi connections? The average?
Dan Williams: We peaked at 24,775 (roughly 38% of attendance) concurrent connections with an average of 16,862 (roughly 25% of attendance).
MSR: When did connections spike? When did they start and then tail off?
Williams: We had two spikes, 1:02 p.m. [editor's note: kickoff was 1 p.m.] with a system wide peak of 2.3Gbps and then again at 1:53 p.m. with 1.7Gbps. We averaged more than 1Gbps for more than two hours.
Williams: We offloaded 2.13 Terabytes during the event.
MSR: What were the usage patterns with the app — which feature did people use most?
Williams: We had a great deal of usage throughout Sunday. The food ordering app usage was top of the list with ticketing being a close second while video would take third from a feature standpoint.
MSR: What are the plans with the instant replay feature… when will it be live (and can you explain why it was held back)?
Williams: We felt a lot of folks were happy with the livestream, so we wanted to focus more on a couple of core features with food ordering and ticketing a bit more at this point. Replays will be available to all by the first regular season home game.
MSR: Can you explain exactly how the location feature works… does it require Bluetooth to be on?
Williams: The location service is mainly built around low-energy Bluetooth, BLE. We have a number of beacons placed throughout the open areas and points-of-interest which allow the app to identify your location through proximity. Aruba helped us build this as well. GPS is also used but the primary resource is Bluetooth. The app prompts users to enable Bluetooth to provide improved location awareness.
Williams: The DAS held up really well. Like WiFi, we found some areas that need tuning. Unlike WiFi, the carriers protect a lot of their specific data but they have told us they are very happy with the system DGP helped us with. It is important to note our DAS and WiFi have been built to compliment each other and I think between Aruba and DGP, we did that very well. Most come here looking to connect to WiFi but our story internally has been we are going to have an awesome connectivity play regardless of medium.
MSR: Could you guys see any [more] of the 2.4 GHz issues like the one I had?
Williams: As you know, 2.4GHz is limited with non-overlapping channels so we suspect a number of legacy devices may have some problems. That said, we had a ratio of 2:1 with respects to 5GHz to 2.4GHz [usage] which shows a good deal of 2.4GHz usage. We know we still have some optimizations to do in the upper bowl and upper concourse while we continue to fine-tune the main bowl and concourse as we noticed our cell edge was weaker than expected when the stands were full. Our Aruba team did a great job capturing real-time data during the event as there is really no other way to test this stuff without a full venue. We will make some tweaks and continue to learn more from every event we host. Between Aruba, Brocade, and the 49er tech staff, we are not resting on our laurels. We know there is more to do.