I'm responsible for providing connectivity at a local street market that operates twice a week. There's a corporate building beside the market square with clear line of sight, but installing equipment on streetlights or other lighting columns isn't practical because of highway regulations, contractor arrangements, and power licensing.
One idea is to install a high-gain or sector access point on the building roof and deploy outdoor mesh access points at the market's power feeder pillars on event days. However, I'm concerned that canopies, metal stalls, and delivery vehicles could obstruct the 5GHz backhaul between the roof and the temporary access points. I'm also worried about relying on non-technical staff to position and connect equipment correctly, preventing vendors from unplugging it, and keeping card-payment systems reliable while offering rate-limited guest Wi-Fi.
Would a roof-to-ground wireless mesh be too unreliable once the market is set up? Would it make more sense to use an industrial 4G/5G router in a locked feeder pillar, or build a point-to-multipoint system to low-mounted sector access points on the building? I'd appreciate practical advice on suitable designs, hardware, deployment procedures, and lessons learned from similar temporary outdoor installations.
3 Answers
For payment terminals, the simplest and most reliable approach may be to let each trader use their own 4G/5G connection or cellular payment terminal. Most small card readers are designed to work with a nearby phone hotspot, and putting all of them behind one shared wireless network can introduce extra security and compliance responsibilities. You could still provide separate guest Wi-Fi, but I wouldn’t make the market-wide network a dependency for EPOS transactions.
The deployment process is just as important as the radio design. Don’t leave valuable network equipment for market staff or vendors to position ad hoc. Use numbered, weatherproof kits with fixed mounting locations, short labeled cables, locking power connections, and a checklist with photos. Have someone responsible for setup, monitoring, and removal, and keep spare access points and cables ready because metal food trucks and stalls can create surprisingly large coverage holes. Good monitoring and a separate communication method, such as radios, are also useful when the network itself is down.
If you need a shared network with more capacity, use a proper distribution design rather than ordinary mesh. Fiber is ideal where it can be installed temporarily. Otherwise, dedicated 60GHz point-to-point or point-to-multipoint links can work well, with carefully planned 5GHz systems as a fallback. Keep the backhaul channel separate from client access channels, use weather-rated access points, and survey the site with the actual canopy and stall layout in place.
Whatever backhaul you choose, plan for local power failures. Temporary events lose power more often than people expect, so battery backup for the network equipment and a clear recovery procedure are worthwhile.