Global Area Network

A global area network (GAN) specification is in development by several groups,and there is no common defition.In general,however,a GAN is a model for supporting mobile communications across an arbitrary number of wireless LANs ,satellite coverage areas etc.The key challenge inmobile communications is "handing off" the user communications from one local coverage area to the next.In IEEE project 802,this involves a succession of terrestrial WIRELESS local area networks(WLAN).