Overview
This lecture covers the main types of wireless network configurations: ad hoc networks, wireless LANs (WLANs), and mesh networks, including their structures and practical uses.
Types of Wireless Networks
- Ad hoc networks allow devices to communicate directly without supporting infrastructure.
- Wireless LANs (WLANs) use access points as bridges between wireless devices and a wired network.
- Mesh networks combine elements of ad hoc and WLANs, allowing multiple devices or access points to interconnect wirelessly.
Ad Hoc Networks
- All nodes in an ad hoc network can communicate directly with nearby nodes.
- Ad hoc networks are typically used for direct device-to-device transfers, like sharing files between smartphones.
- They are common in industrial or warehouse environments for equipment communication.
- Useful during disasters for emergency communication when standard infrastructure is unavailable.
Wireless LANs (WLANs)
- WLANs are the most common wireless network configuration in businesses.
- Access points provide the connection between wireless devices and the wired LAN.
- The wired LAN usually contains the main outgoing internet link.
- Wireless devices connect to external resources via access points and gateway routers.
Mesh Networks
- Mesh networks feature wireless interconnection among access points and devices, creating a mesh layout.
- Most mesh networks still connect to a wired network but do not require each access point to be wired.
- Mesh setups make it easy to expand network coverage and boost performance by adding more access points.
Key Terms & Definitions
- Ad hoc network — a wireless network where devices communicate directly without central infrastructure.
- Wireless LAN (WLAN) — a network with wireless access points bridging wireless devices and a wired LAN.
- Mesh network — a network where multiple devices or access points connect wirelessly, often without direct wiring for each node.
Action Items / Next Steps
- Review examples of each wireless network type for a deeper understanding.
- Read further on real-world applications of wireless networking in disaster recovery and enterprise settings.