This special issue brings together eight contributions on proposals for the resources management and mobility management in wireless networks, from different viewpoints, including QoS support, dynamic channel allocation, fault-tolerance, power saving and power efficiency, clustering and security issues. The papers have been selected from a total of more than 40 submitted papers, due to their originality and contribution to the field of wireless communications and mobile computing, with a particular emphasis on resources and mobility management in wireless networks -the theme of this special issue.The paper 'An efficient distributed fault-tolerant protocol for dynamic channel allocation' by Azzedine Boukerche, Tingxue Huang and Kaouther Abrougui, provides a proposal for a dynamic and distributed channel allocation scheme which incorporates the advantages of fault-tolerance and mobility support, and its performance evaluation. The paper 'Mitigating the impact of node mobility on ad hoc clustering' by Rituparna Ghosh and Stefano Basagni, evaluates the impact of different node mobility assumptions and provides some guidelines for improving the effectiveness and overhead reduction of clustering solutions in wireless ad hoc network scenarios. The paper 'Transmission power and duration-aware playout control for packetized media streaming over wireless links' by Yan Li and Nickolas Bambos illustrates and analyzes resource-saving solutions for transmission power control and playout buffer control to support QoS for media streaming over wireless links. The paper 'Energy and connectivity performance of routing groups in multi-radio multi-hop networks' by Michele Rossi, Leonardo Badia, Paolo Giacon and Michele Zorzi, provides a modelling and analysis of the in-network aggregation of wireless devices into groups, exploiting the connectivity potential of multiple radios to simplify the routing management in multi-hop wireless networks. The paper 'MUSAQ: a multimedia session-aware QoS provisioning scheme for cellular networks' by Mona El-Kadi Rizvi and Stephan Olariu, provides a QoS management scheme that reduces the self-contention of multiple streams composing a multimedia communication session, by exploiting the prioritization made possible by the knowledge of the relationships between competing flows in a multimedia session. The paper 'A modified hopfield network for mobility management' by Javid Taheri and Albert Y. Zomaya, proposes a novel and efficient approach based on heuristics and neural network techniques for optimizing the location management solutions of mobile devices. The paper 'An application-driven approach to designing secure wireless sensor networks' by Eric Sabbah, Kyoung-Don Kang, Nael Abu-Ghazaleh, Adnan Majeed and Ke Liu, introduces some concepts and guidelines for realizing a dynamically reconfigurable application-
