Editorial: Third Quarter 2013, IEEE Communications Surveys & Tutorials

This issue includes twenty five articles covering different aspects of communication networks. In particular, issues related to energy efficient multimedia transmission, interference coordination in cellular networks, resource allocation and reservation, game theoretic approaches for spectrum access via carrier sensing, cognitive networks, biologically inspired algorithms for computer networking, stochastic geometry modeling for cellular and cognitive wireless networks, human activity recognition via wearable sensors, intrusion detection in sensor networks, source location privacy in sensor networks, indoor inertial position systems, cloud computing for smart mobile devices, content delivery in mobile networks, power savings in data centers, mobile social networks, vehicular networks, protocol stack for the Internet of Things, transition from IPv4 to IPv6, active queue management, Ethernet security, and context provisioning. A brief account for each of the articles included in this issue is given.