How to get better wifi coverage across your business

Business wifi is not home wifi

At home, a wifi drop-out is an annoyance. In a business it is money: the card terminal that will not take payment, the video call with a client that freezes, the guest who leaves a bad review because there was no connection in the room.

The commonest mistake is treating a company network like a large flat: the provider’s router at reception and a couple of repeaters. It holds up while there are few users, then collapses the moment occupancy rises. This article explains how professional wifi is designed for offices, shops, restaurants, hotels and holiday lets. If you are after a solution for your own home, there is a separate guide on how to extend your wifi at home.

Coverage and capacity are not the same thing

Showing full bars everywhere is no guarantee the network works. There are two distinct ideas here:

• Coverage: the signal reaching every corner at a usable level.
• Capacity: the network carrying every connected device at once, at a decent speed.

A single powerful access point can cover a whole floor and still fall over with forty people connected. In a business you have to design for both, with your busiest moment in mind.

Step 1: a coverage survey

Before anything is installed, it is worth looking at:

• Plans and materials: load-bearing walls, concrete, glass, lift shafts, cold rooms and metal shelving all attenuate the signal heavily.
• How many users and devices there are per area at peak time.
• Critical uses: card terminals, IP telephony, cameras, video calls, booking systems.
• Interference from neighbouring networks, very common in shopping streets and apartment buildings.
• Outdoor areas: terraces, pools or gardens that also need service.

With that in hand you can decide how many access points you need and where they go.

Step 2: wired access points

The foundation of professional wifi is access points wired back to a switch, normally powered over Ethernet. Each AP then gets the full connection over cable instead of depending on repeating a wireless signal.

The advantages over repeaters:

• Steady performance, with no speed lost at every hop.
• You can mount the APs on the ceiling, where coverage is far more even.
• A single cable for data and power, with no need for a socket beside every unit.

Where a point genuinely cannot be cabled, a professional mesh system can fill the gap, but it should not be the backbone of the network.

Step 3: central management and roaming

With several APs, the professional approach is to manage them from a controller, either on site or in the cloud. That gives you:

• One network name throughout the premises.
• Roaming: a phone moving from one AP to the next without dropping, helped by standards such as 802.11k/v/r.
• Automatic channel and power adjustment so the APs stop interfering with each other.
• Monitoring of faults and of who is connected.

Step 4: separate networks and security

Staff, customers and equipment should never share one network. The sensible arrangement:

The guest network can include a captive portal. If it collects users’ data, data protection law applies.

Step 5: choosing the right standard in 2026

• Wifi 6 (802.11ax): the sensible minimum for a new installation, and far better at handling many devices at once.
• Wifi 6E: adds the 6 GHz band, with clean channels and less interference, useful in congested areas.
• Wifi 7 (802.11be): the newest generation; it makes sense when you need high performance and your users’ devices support it.

The 2.4 GHz band travels further but is congested; 5 GHz offers more speed and more channels. A good design spreads devices across the bands.

Typical cases on the Costa Daurada

• Hotels and holiday lets in Salou or Cambrils: a lot of users in peak season, walls between rooms and guests who expect to stream. That usually needs an AP per corridor or per room, and a tightly limited guest network.
• Restaurants with a terrace: outdoor APs protected against the weather and the salt air.
• Offices and studios: the priority is video calls and the security of the corporate network.
• Warehouses and industrial units: long distances and metal racking, so longer-range APs and careful aiming.

The cabling matters

Professional wifi rests on decent structured cabling, Cat 6 or better, a suitable switch and, ideally, a tidy rack. A great many problems blamed on wifi turn out to be faults in the cabling, the switch or the internet line itself.

Common mistakes in businesses

• Chaining domestic repeaters together.
• Leaving the provider’s router as the only access point.
• Sharing the internal network password with customers.
• Mounting APs inside cupboards or behind screens.
• Never reviewing the network when staff, covers or rooms increase.

Maintenance

Updating the firmware, checking on neighbouring networks from time to time and testing performance before peak season saves a lot of grief in the busiest months.

If your business in Tarragona or along the coast needs wifi that does not let you down, have a look at our wifi solutions and ask us for a quote with no obligation. We survey the premises and propose a network sized for how you actually use it.