==> PACKET RELAY RADIO TO THE RESCUE?
At present, unlicensed wireless access – such as 802.11b, also known as
WiFi – delivers speeds measured in megabits. But 802.11b may be
short-lived – the 2.5GHz band could become so crowded that nobody will want
to go there. Wireless packet-relay networks solve the problem of multiple,
powerful, overlapping transmitters. A network of weak transmitters (with
routers attached) can send a packet a long way without unnecessarily
trampling on the spectral commons. Multiple hops replace additional
amplification. In addition, packet-relay radio networks solve the
line-of-sight problem that restricts single-hop 802.11b transmissions.