What is Dual-Band WiFi and What Are the Benefits for Businesses?

Ask any business owner what happens when the internet goes down, and you'll get the same answer: everything stops.

To prevent this from happening, dual-band WiFi networks are designed to improve connectivity, offering superior performance that can transform business operations. If you’re experiencing WiFi issues and poor internet connectivity in your business, dual-band WiFi might just be the solution you’re looking for. But what is dual-band WiFi? Our guide answers this question and explains the many benefits it can bring.

What is a dual-band WiFi network?

A dual-band WiFi network utilises two separate frequency bands. These are 2.4 GHz and 5 GHz, each with its own distinct advantages and use cases. 2.4 GHz WiFi remained the most used type of frequency for many years, as it provided connection to all types of wireless devices, such as Bluetooth headphones, laptops and smartphones. But, 2.4 GHz WiFi presented several problems, resulting in the 5GHz frequency being created.

2.4GHz vs 5GHz bands

The 2.4GHz band is older and more widely compatible with many devices. It is known for its extensive coverage area and its ability to penetrate solid objects like walls and floors, making it ideal for broader wireless coverage across business premises. This means that you could be very far away from the router and still maintain a strong WiFi connection, making it perfectly ideal for both small and large business premises, right?

Due to its widespread use and the number of devices that operate on the band, it is more susceptible to interference and congestion. While 2.4GHz WiFi can provide wider coverage for connectivity, Bluetooth devices and even common appliances such as microwaves can disrupt the signal, leading to slower speeds and reduced network reliability. With lots of devices connected to the 2.4GHz frequency, resulting in inconsistent and poor connectivity, a better solution had to be made.

In came the creation of 5 GHz WiFi. This band is a newer addition that offers faster speeds and less susceptibility to interference from all the connected devices. The higher frequency allows for quicker data transmission, making it well-suited for bandwidth-intensive tasks, such as HD video calls and large file downloads.

However, its higher frequency also means it has a shorter range and less capability to penetrate obstacles compared to the 2.4 GHz band. This has seen businesses face limitations in effectiveness, especially in larger spaces or multi-storey buildings without the appropriate setup of additional networking equipment.

How do dual-band WiFi routers work?

Dual-band WiFi routers were created to overcome the challenges of both frequency bands by broadcasting on both frequencies simultaneously. They provide the flexibility for devices to connect to the optimal band based on real-time conditions.

This capability is supported by a technology known as band steering, which automatically directs connected devices to the band that will provide the best performance based on their current location and network conditions.

New wireless devices will be able to connect to both bands, and will switch automatically to the most suited one depending on how much traffic there is on the 2.4 GHz band. If it’s too congested, the dual-band router will steer the device to the 5 GHz band.

Why should businesses switch to a dual-band WiFi network?

Being able to simultaneously support both bands, businesses can gain several benefits by adopting dual-band WiFi.

Capacity and efficiency

One of the most critical benefits is the improved network capacity and efficiency. By distributing devices between the 2.4 GHz and 5 GHz bands, dual-band routers can effectively manage more connections with less interference. This means devices won’t have to compete as hard for bandwidth, which is particularly beneficial in business environments with many different types of wireless devices.

Smarter allocation of tasks

The availability of the 5 GHz band means that businesses can allocate high-priority tasks to this less congested and faster band. For instance, tasks that demand higher bandwidth, such as video conferencing or real-time cloud computing, can operate more smoothly without worry about the risk of slow connection or disruption during critical operations.

Enhanced security

Security is another area where dual-band WiFi networks excel. The 5 GHz band often supports the latest security standards, such as WPA3 which is the latest and most secure WiFi protocol. This means your company can benefit from enhanced encryption and user authentication. In terms of user authentication, businesses can also set different network names for each band, known as SSIDs, allowing strict access controls to each frequency.

Easily adaptable for businesses

Additionally, dual-band networks are adaptable to a variety of business settings, from small offices to large venues. They can be scaled according to the specific needs of the business, with additional access points added to extend coverage and improve connectivity in hard-to-reach areas. This means as your business grows, your WiFi network can easily scale to meet increased users and devices, further reducing congestion and improving overall performance.

How to get the most out of dual-band WiFi

With all these benefits of dual-band WiFi, you may be considering adopting it for your business. But, there are additional factors to consider so you can get the most out of the networking technology.

Network management and optimisation

Effective management tools are crucial for maximising the benefits of dual-band WiFi. Businesses should consider routers or network management systems that offer detailed analytics and control over how traffic is handled between the 2.4 GHz and 5 GHz bands. Advanced management capabilities can help in prioritising traffic, implementing security policies and troubleshooting network issues.

Management and optimisation is an ongoing and complex requirement, and is better handled by a reliable managed IT support provider who can ensure your WiFi is secure and tailored to your needs.

Future proofing

With the rapid evolution of technology, you need to consider how to future-proof your networking infrastructure. Dual-band routers that also support the latest WiFi standards can be a good investment. Routers like WiFi 6 and WiFi 7 offer increased capacity, efficiency and performance, particularly in business environments with many connected devices. This ensures the network remains robust and capable as new devices and technologies emerge.

External antennas and beamforming

There may be a need to install additional networking technology to overcome the limitations in range and penetration of the 5 GHz band. Businesses might look into routers that feature external antennas or beamforming technology. Beamforming can focus a WiFi signal towards specific devices rather than broadcasting in all directions, improving signal strength and reach.

Consideration of physical environment

The physical layout and construction materials of a business environment can significantly affect WiFi performance. Materials like metal, concrete and glass can obstruct signals, which is where wired networking can help. Performing a site survey to identify potential dead zones can help in strategically placing access points or routers to ensure optimal coverage.

Vendor support and warranty

Choosing equipment from vendors that offer robust support and warranties can help mitigate potential issues down the line. It’s important to have access to technical support for troubleshooting and to ensure the warranty teams are conducive to your business’s operational requirements.

Regulatory compliance

Ensuring that all dual-band network equipment complies with local regulations is essential. This includes adhering to frequency use, power output and data protection laws that might apply to WiFi networking.

Expert Internet Services From Flotek

Businesses need to stay ahead of the evolving landscape of technology and IT. WiFi networks is just one of these areas, and dual-band WiFi offers many benefits for businesses, including more consistent network performance, faster data transmissions with the 5 GHz band, more control over access and the ability to easily scale the technology along with growth.

But, switching to dual-band WiFi and setting it up correctly is easier said than done. At Flotek, we partner with businesses across the UK to deliver leading internet services, including supporting the entire switch to dual-band WiFi and full data fibre installation.

Book a meeting with Flotek today to discuss making the switch to dual-band WiFi. Call us directly on 02921 50 8000 or send your details using our contact form and we’ll quickly be in touch.

Further reading: Network Cabling Explained | Types & Uses | What Is Business Wifi And Why Is It Important? | Latest WiFi & Networking Technology Trends