This book covers all areas concerning mobility and wireless communications. Presented papers deal with cellular networks (2G, 3G and 4G), wireless networks (IEEE802.11, Bluetooth and sensor networks), security, quality of service and applications. Accepted papers represent a good selection of research in wireless communications. They offer an overview and also sharp visions of industrial and scientific work.The proceedings have been selected for coverage in:• Index to Scientific & Technical Proceedings (ISTP CDROM version / ISI Proceedings)

Mobile and Wireless Communications presents the latest developments in mobile and wireless research and the industry, with a broad range of topics including: -Ad-hoc networking; -Power control; -Personal communications; -Satellite; -QoS; -UMTS and wireless LANs; -Handoffs, security and mobility; -CDMA and physical layer including modulation and coding; -Methods of communication functions including multiple access, error control, flow control and routing. This state-of-the-art volume comprises the edited proceedings of the Working Conference on Personal Wireless Communications (PWC'2002), which was sponsored by the International Federation for Information Processing (IFIP), organized by IFIP Working Group 6.8, and held in Singapore in October 2002.

Mobile Ad hoc NETworks (MANETs) has attracted great research interest in recent years. A Mobile Ad Hoc Network is a self-organizing multi-hop wireless network where all hosts (often called nodes) participate in the routing and data forwarding process. The dependence on nodes to relay data packets for others makes mobile ad hoc networks extremely susceptible to various malicious and selfish behaviors. This point is largely overlooked during the early stage of MANET research. Many works simply assume nodes are inherently cooperative and benign. However, experiences from the wired world manifest that the reverse is usually true; and many works [3] [10] [9] [8] [12] [19] have pointed out that the impact of malicious and selfish users must be carefully investigated. The goal of this research is to address the cooperation problem and related security issues in wireless ad hoc networks. As a rule of thumb, it is more desirable to include security mechanisms in the design phase rather than continually patching the system for security breaches. As pointed out in [2] [1], there can be both selfish and malicious nodes in a mobile ad hoc network. Selfish nodes are most concerned about their energy consumption and intentionally drop packets to save power. The purpose of malicious nodes, on the other hand, is to attack the network using various intrusive techniques. In general, nodes in an ad hoc network can exhibit Byzantine behaviors.

This volume constitutes the refereed proceedings of the International Workshop on Mobile and Wireless Communications Networks, MWCN 2000, held as part of the IFIP-TC6/European Union NETWORKING 2000 Conference in Paris, France, in May 2000. The revised full papers presented were carefully reviewed and selected for inclusion in the volume. The book is divided in sections on indoor wireless networking, multiple access techniques for wireless ad-hoc networking, telephony over packet switched networks, IP networks versus conventional switched networks, mobility management and access techniques, and mobility support in IP.