Wireless Mesh Networks (WMNs) applications has a wide scope in communication networks. It provides internet access, information sharing, services, gaming, public safety, medical and emergency response, valuable asset security, video surveillance, industrial monitoring etc. WMNs are very helpful in disaster and emergency networking. This book presents real-time experimental performance evaluation of WMNs and simulation results of decentralized hybrid wireless mesh protocol (DHWMP) and cluster-based routing protocol (CBRP) for WMNs. This book focuses on routing protocols for WMNs with security mechanism and also discuss real-time implementation of WMNs. This book ideas are simple but simulations and implementation is hard. This book covers the details of IEEE 802.11s routing protocols, and security mechanism for decentralized hybrid mesh protocol, simulation of DHWMP, NCBRP and test-bed implementation for wireless mesh networks.