Wireless local area networks (WLANs) have traditionally been used to transport only data, but are now being used to carry voice traffic as well as provided new combined voice and data services. Voice over WLANs also offers more flexibility than wired networks (changes to a WLAN dont require changes to installed wiring) and greater capacity than wired networks. This book provides a solid overview of voice over WLANs/VoIP (voice over internet protocol) technology, including voice coding, packet loss, delay and jitter, and echo control. It shows how to combine both WLAN and VoIP technology to create effective voice over WLAN systems.

* Gives complete details on integrating voice and data services on WLANs, including wide area networks
* Explores quality of service (QoS) and security issues
* Step-by-step descriptions of how to plan and implement voice over WLAN networks

This book is part of the Cisco Press® Fundamentals Series. Books in this series introduce networking professionals to new networking technologies, covering network topologies, sample deployment concepts, protocols, and management techniques.

Grevers and Christner are key contributors to the design and architecture of Cisco application delivery and application acceleration solutions.

• Provide high-performance access to remote data, content, video, rich media, and applications
• Understand how accelerators can improve network performance and minimize bandwidth consumption
• Use NetFlow to baseline application requirements and network utilization
• Ensure network resources are allocated based on business priorities
• Identify performance barriers arising from networks, protocols, operating systems, hardware, file systems, and applications
• Employ application-specific acceleration components to mitigate the negative impact of latency and bandwidth consumption
• Integrate content delivery networks (CDN) to centrally manage the acquisition, security, and distribution of content to remote locations
• Leverage WAN optimization technologies to improve application throughput, mitigate the impact of latency and loss, and minimize bandwidth consumption
• Optimize the performance of WANs and business-critical WAN applications

The definitive guide to planning, architecting, deploying, supporting, and creating Voice over Wireless LAN solutions. 

Recent advances make it possible to deliver high-quality voice and video communications over a wireless LAN (WLAN), replacing costly wired telephone and video surveillance systems and dramatically reducing support costs. However, today’s new voice over WLAN (VoWLAN) technologies require fundamentally different skills and techniques from those used in traditional voice and video systems. Now, there’s a complete guide to every facet of VoWLAN deployment: planning, design, installation, security, maintenance, and troubleshooting.

• Understand VoWLAN components, applications, and benefits
• See VoWLAN at work in actual enterprise environments
• Master VoWLAN signaling, including voice signal characteristics, A/D conversion, and compression
• Discover the latest 802.11 VoWLAN standards, including 802.11e, 802.11r, and 802.11k
• Secure IP-based VoWLAN systems against intrusion and compromise
• Analyze your organization’s requirements and design an optimal VoWLAN solution
• Plan for capacity, roaming, and integration with cellular systems
• Install, configure, test, verify, and validate your VoWLAN system
• Plan for operational support and implement appropriate administration tools and methods

Protocols and Architectures for Wireless Sensor Networks provides a thorough description of the nuts and bolts of wireless sensor networks.

The authors give an overview of the state-of-the-art, putting all the individual solutions into perspective with one and other.  Numerous practical examples, case studies and illustrations demonstrate the theory, techniques and results presented.  The clear chapter structure, listing learning objectives, outline and summarizing key points, help guide the reader expertly through the material.

In the Age of Enlightenment the German philosopher Immanuel Kant encouraged people to use their own mind as the basis for reasoning instead of following dogmatic religious rules - Sapere aude! (dare to know!) - Today wireless communication networks are increasingly becoming aware of the conditions of its their component parts and surrounding environment. Cognition, a continuous process involving sensing, reasoning, understanding and reacting, can be applied to wireless networks in order to adapt the system to the highly dynamic wireless ecosystem. The ultimate goals are to enhance the efficiency in the use of radio resources as well as to improve both link and network performance. This book presents a detailed overview of a rapidly emerging topic in modern communications: cognitive wireless networks. The key aspects of cognitive and cooperative principles in wireless networks are discussed in this book. Furthermore, Cognitive Wireless Networks advocates the concept of breaking up the cellular communication architecture by introducing cooperative strategies among wireless devices. Cognitive wireless networking is the key to success in handling the upcoming dynamic network configurations and exploiting this cross-over to the fullest extent. As wireless networks become pervasive, highly populated and increasingly complex, the essential preconditions for exploiting rich interactions among mobile devices are better fulfilled. Today, these trends are giving rise to new communications paradigms making use of cooperation and cognition as the main underlying principles. Cognition, together with its complementary principle cooperation, confer to the wireless networks some degree of consciousness or understanding about their own existence, such as internal structure, capabilities, relationships to the outside world, limitations, current use of radio resources and many more. Current wireless networks are aware of their surrounding environment to a very limited extent, but in future wireless networks this capability will be highly developed, as a consequence of exploiting jointly cooperative and cognitive principles. Especially for cooperative wireless networks, where the communication scenario is highly dynamic, the mobile devices need to adapt their capabilities in a flexible manner, taking advantage of cognitive principles.