Wireless data refers to transmitting informationâÂÂvoice, video, sensors, appsâÂÂwithout physical cables, using electromagnetic waves like radio, microwave, or infrared waves.
Technologies and networks
WiâÂÂFi (Wireless LAN)
- Connects devices via access points using IEEE 802.11 standards.
- Latest versions include WiâÂÂFiâ¯6/6E (using 2.4â¯GHz, 5â¯GHz, and now 6â¯GHz bands) offering higher throughput and efficiency
Cellular (3G/4G/5G/5GâÂÂAdvanced)
- 3G/4G (LTE) support broad data access.
- 5G launched globally since 2019; offers up to 10â¯Gbps speeds, extremely low latency, and supports massive IoT
- 5GâÂÂAdvanced (5.5G) introduces AI integration, edge compute, better slicing, non-terrestrial networks, aiming for full deployment by end of 2025.
Wireless PAN and others
- Bluetooth, Zigbee, UWB for short-range, low-energy data transfer (e.g., device pairing, indoor location)
- Satellite and Wide Area IoT networks (e.g., NB-IoT) allow remote connectivity
Niche and emerging
- IEEE 802.22 uses TV bands for rural broadband with AES-GCM encryption
- Free-Space Optical (FSO) Infrared beams achieved 5.7â¯Tbps over 4.6â¯kmâÂÂno RF needed
- 6G (2027âÂÂ30) envisions terahertz bands, AI-native networks, quantum comms, holographic beamforming
Security and protocols
WiâÂÂFi encryption
There are four main methods of Wi-Fi Encryption:
- WEP: outdated and insecure.
- WPA & WPA2: added TKIP and AES/CCMP, respectively
- WPA3: modern standard since 2018 with SAE, enhanced open (OWE), 192-bit enterprise, and protection of management frames
Trends in wireless security
The trend in wireless security is to move toward WPA3, WiâÂÂFiâ¯6E enhancements, private 5G/LTE (CBRS), UEM, AI/ML analytics, edge protection, and stronger identity access management.
Architecture and standards
OSI layers
Wireless networks conform to the OSI model, each layer bringing unique threats and protections.
Protocol stacks
Wireless Application Protocol is the early mobile web stack (WSP/WDP/WTP/WTLS) designed for feature phones and constrained networks.
Applications and use cases
- Consumer Internet access: Home WiâÂÂFi and mobile broadband
- Enterprise mobility: BYOD management, secure campus networks
- IoT and industrial: Sensors, telemetry, remote control via Zigbee, private LTE, NB-IoT
- High-speed links: FSO for urban backhaul; IEEE 802.22 for rural broadband
- Future systems: 5G/6G to support smart cities, autonomous vehicles, XR, remote surgery
See also
References