Second quarter 2009 IEEE Communications Surveys and Tutorials

Welcome to the second issue of 2009 of the IEEE Communications Surveys and Tutorials (ComST). Papers in this issue survey the research effort in several areas such as protocols for inter-vehicle communications, protocols for Space Internet, protocols for data replication in ad-hoc networks, security in sensor networks, cross-layer scheduling for broadband wireless networks, communications with multiple antennas and network reliability.