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Di?erent Types of Wireless Networks Infrastructure-based Infrastructure-less Single-hop Base station connected to larger wired network (e g , WiFi wireless LAN, and cellular telephony networks) No wired network; one node coordinates the transmissions of the others (e g , Bluetooth, and ad hoc 802 11) Multi-hop Base station exists, but
Networks (WMAN), and Wireless Wide-Area Networks (WWANs) Figure 1 illustrates these four categories Fig 1 1 Wireless networks classification In addition, wireless networks can be also divided into two broad segments: short-range and long-range Short-range wireless pertains to networks that are confined to a limited area
Index Terms—Ad hoc networks, capacity, multihop radio net-works, throughput, wireless networks I INTRODUCTION W IRELESS networks consist of a number of nodes which communicate with each other over a wireless channel Some wireless networks have a wired backbone with only the last hop being wireless Examples are cellular voice and data
Wireless Network Architecture INTRODUCTION Wireless networks come in all shapes and sizes While many aspects of these diverse networks have common foundations, there are several other aspects that differ widely and need separate treatment It is thus important to classify and sample example wireless networks to obtain a better