The book contains: Concept of Introduction, Fundamentals of Wireless Communication Technology - the Electromagnetic Spectrum - Radio Propagation Mechanisms - Characteristics of the Wireless Channel - Mobile Ad Hoc Networks (Manets) and Wireless Sensor Networks (Wsns): Concepts and Architectures. Applications of Ad Hoc and Sensor Networks. Design Challenges in Ad Hoc and Sensor Networks.Mac Protocols for Ad Hoc Wireless Networks, issues in Designing a Mac Protocol - Classification of Mac Protocols - Contention Based Protocols - Contention Based Protocols with Reservation Mechanisms - Contention Based Protocols with Scheduling Mechanisms - Multi Channel Mac-Ieee 802.11.Routing Protocols and Transport Layer in Ad Hoc Wireless Networks, issues in Designing a Routing and Transport Layer Protocol for Ad Hoc Networks - Proactive Routing, Reactive Routing (On-Demand), Hybrid Routing - Classification of Transport Layer Solutions-Tcp over Ad Hoc Wireless Networks.