WiFi Glossary

Understanding WiFi terminology is the first step to optimizing your network. Browse our comprehensive glossary of 36+ networking terms.

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8

802.11ax (WiFi 6)
The latest WiFi standard offering faster speeds, better performance in crowded areas, and improved battery life for connected devices. Supports speeds up to 9.6 Gbps and uses OFDMA technology.
802.11ac (WiFi 5)
The previous generation WiFi standard operating on the 5GHz band, supporting speeds up to 3.5 Gbps with features like beamforming and MU-MIMO.

A

Access Point (AP)
A networking device that allows WiFi devices to connect to a wired network. Access points extend the coverage area of a WiFi network.

B

Bandwidth
The maximum rate of data transfer across a network path, measured in bits per second (bps). Higher bandwidth means more data can be transferred simultaneously.
Beamforming
A signal processing technique used in WiFi routers to direct the wireless signal toward a specific receiving device, rather than broadcasting in all directions. Improves range and speed.

C

Channel
A specific frequency range within the WiFi spectrum that a router uses to communicate. The 2.4GHz band has channels 1-14, while the 5GHz band has many more non-overlapping channels.
Channel Width
The range of frequencies a WiFi channel occupies. Common widths are 20MHz, 40MHz, 80MHz, and 160MHz. Wider channels offer faster speeds but are more susceptible to interference.

D

DHCP
Dynamic Host Configuration Protocol. Automatically assigns IP addresses to devices on your network, eliminating the need for manual configuration.
DNS
Domain Name System. Translates human-readable domain names (like google.com) into IP addresses that computers use to identify each other on the network.
Dual-Band Router
A router that broadcasts on both 2.4GHz and 5GHz frequency bands simultaneously, allowing devices to connect to the most suitable band for their needs.

E

Ethernet
A wired networking technology that connects devices using cables. Ethernet provides faster, more stable connections than WiFi and is ideal for stationary devices.

F

Firmware
The software embedded in your router that controls its functionality. Keeping firmware updated ensures optimal performance and security.
Frequency Band
The range of radio frequencies used for WiFi communication. The two main bands are 2.4GHz (longer range, slower) and 5GHz (shorter range, faster). WiFi 6E adds the 6GHz band.

G

Gateway
A network device that serves as an entry point to another network. In home networking, your router typically acts as the gateway between your local network and the internet.

I

Interference
Disruption of WiFi signals caused by other electronic devices, neighboring networks, or physical obstacles. Common sources include microwaves, cordless phones, and Bluetooth devices.
IP Address
A unique numerical label assigned to each device on a network. IPv4 addresses look like 192.168.1.1, while IPv6 uses a longer hexadecimal format.

J

Jitter
The variation in time between data packets arriving at a device. High jitter causes choppy video calls and laggy gaming. Measured in milliseconds.

L

Latency
The time it takes for data to travel from source to destination, measured in milliseconds (ms). Lower latency means faster response times. Also called ping.

M

MAC Address
Media Access Control address. A unique hardware identifier assigned to each network interface. Used for device identification and network access control.
Mbps
Megabits per second. A unit of measurement for data transfer speed. 1 Mbps = 1,000,000 bits per second. Not to be confused with MBps (megabytes per second).
Mesh WiFi
A WiFi system using multiple interconnected nodes to provide seamless coverage throughout a large area. Devices automatically connect to the strongest node as you move.
MU-MIMO
Multi-User Multiple Input Multiple Output. Technology that allows a router to communicate with multiple devices simultaneously, improving network efficiency.

N

NAT
Network Address Translation. Allows multiple devices on a local network to share a single public IP address when accessing the internet.

O

OFDMA
Orthogonal Frequency Division Multiple Access. A WiFi 6 technology that divides channels into smaller sub-channels, allowing multiple devices to transmit simultaneously.

P

Packet Loss
When data packets fail to reach their destination. Causes buffering, dropped calls, and lag in online games. Usually caused by network congestion or poor signal.
Ping
A network utility that measures the round-trip time for data to travel to a server and back. Lower ping means better responsiveness. Critical for gaming and video calls.

Q

QoS (Quality of Service)
A router feature that prioritizes certain types of network traffic. Useful for ensuring smooth video calls or gaming even when other devices are using bandwidth.

R

Range Extender
A device that receives your existing WiFi signal and rebroadcasts it to extend coverage. Simpler but less effective than mesh systems, as it typically halves bandwidth.
Router
A networking device that forwards data between your local network and the internet. Modern routers also include WiFi access point functionality and firewall features.
RSSI
Received Signal Strength Indicator. A measurement of WiFi signal power at a device, measured in dBm. Typical values range from -30 dBm (excellent) to -90 dBm (unusable).

S

SSID
Service Set Identifier. The name of your WiFi network that appears when devices search for available networks. Can be hidden for additional security.

T

Throughput
The actual amount of data successfully transferred over a network in a given time period. Usually lower than the theoretical maximum bandwidth due to overhead and interference.
Tri-Band Router
A router that broadcasts on three frequency bands: one 2.4GHz and two 5GHz (or one 5GHz and one 6GHz). Provides more bandwidth and less congestion for multiple devices.

W

WPA3
WiFi Protected Access 3. The latest WiFi security protocol offering stronger encryption, protection against brute-force attacks, and improved security for open networks.
WPA2
WiFi Protected Access 2. The previous standard WiFi security protocol. Still widely used but being replaced by WPA3 for better security.
WPS
WiFi Protected Setup. A feature that allows easy connection to a WiFi network by pressing a button or entering a PIN. Considered a security risk and recommended to disable.
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