Guest editorial - Selected papers from WMAN'04

The rapid and continued growth of wireless technology made information accessible anywhere and at any time. In addition to wireless networks based on a pre-existing infrastructure, where wireless communications take place only between the end-nodes and the access points, mobile ad hoc networks and sensor networks are emerging rapidly. Such networks pose challenges in several distinct areas such as network topology control, media access, routing, energy consumption, security, and data broadcast scheduling.