--- title: "Events, explained | Nexus Observatory" description: "Interactive explainer: sports, events and venues in 3D, chapter by chapter: capacity is a crowd problem, stop play on a number, not a feeling…" url: https://observatory.global/industries/events/explainer/ publisher: Nexus Observatory Inc. updated: 2026-11-02 --- 01 Stadium 5G Sports and events · Sector explainer # Fifty thousand phones, one storm cell. Venues and stadiums, ski resorts and avalanche terrain, mass events and circuits. Five scenes, each a working calculation: radio capacity for a full bowl, heat stress and lightning distance, avalanche terrain and warning lead time, a temporary marathon observatory and circuit telemetry. **Scenarios**: 4 **Live calculations**: 5 **Community fit**: Medium **01** Stadium 5G **02** Heat and lightning **03** Avalanche terrain **04** Mass events **05** Circuits **06** Proof **01** · Stadium 5G Scenario ## Capacity is a crowd problem. A private operations slice beside the carriers' network, with heat, air and lightning sensing. The bowl is sized by busy-hour demand: how many people are online at once and what each one pulls. Capacity per cell is bandwidth times spectral efficiency times the downlink share of a DDDSU frame; carriers bring their own spectrum through the neutral host. Carrier bandwidth (n78) **Active users**: 17,500 **Busy-hour downlink demand**: 21.0 Gbit/s **Capacity per cell (DDDSU, 74 % downlink)**: 296 Mbit/s **Cells needed**: 71 **Users per cell**: 246 **02** · Heat and lightning Scenario ## Stop play on a number, not a feeling. A roof station reads the three temperatures behind the wet-bulb globe temperature, and counts the seconds between flash and thunder. The organiser's rule turns both into a decision on the screen in the control room: WBGT = 0.7 Tnw + 0.2 Tg + 0.1 Ta, and every second of delay is 343 metres. **WBGT (outdoor, ISO 7243)**: 28.1 °C **Heat decision**: Above the limit **Distance to the strike**: 7.5 km **Lightning decision**: Shelter now **Shelter radius at the rule**: 10.3 km **03** · Avalanche terrain Scenario ## Minutes matter on the road below. Radar, infrasound and geophones with a snow station feeding the control room. Most slab avalanches release on slopes of about 30 to 45 degrees. The model below maps that band on the slope; the lead time is the front's travel time to the road less the infrasound arrival at 343 m/s and the control-room decision. **Time for the front to reach the road**: 47 s **Infrasound arrival plus decision**: 19 s **Lead time to close the road**: 28 s **Slope area in the 30–45° band**: 22 % **04** · Mass events Scenario ## An observatory for one morning. Deployable private LTE, heat-stress stations, air quality and crowd counting, reused across events. The kit is sized from the course: a heat station every few kilometres and enough deployable cells to cover the route and the finish: one cell per twice its usable radius, one station per spacing. **Heat stations incl. start and finish**: 10 **Deployable cells along the route**: 19 **Plus the finish area**: 1 cell, 1 station **Kit reused across events**: Yes, by enrolment state **05** · Circuits Scenario ## Every lap, every channel. Private 5G for telemetry and broadcast with trackside weather. Uplink is the hard direction: telemetry and onboard video from every car, for the whole race. **Lap time**: 1:30 **Aggregate uplink**: 240 Mbit/s **Race duration**: 83 min **Data per race**: 0.15 TB **06** · Proof Evidence ## What the venue checks. Operators, leagues and insurers ask for test results against ground truth, not brochures. The grid keeps each one as a record. Show the record for **Asked for**: Capacity tests **Record kept**: Load test at the busy hour: users, throughput and drop rate per cell **—** Proof ## What buyers in sports and events ask to see. The grid produces each item as a record with the data it supports, not a report written afterwards. **01** Capacity tests **02** carrier onboarding **03** detection rates against ground truth **04** insurance and liability terms ### Bring us the site. Tell us the site, the sector and what you need to observe. We bring the survey, the design and the crew. [Talk to us](https://observatory.global/contact/) [Sector overview](https://observatory.global/sectors/sports-events/) [Nexus Observatory](https://observatory.global/)**Sports, events and venues** . 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