Other wireless technologies

Book excerpt: Wireless long(er) distance transmission One of the main constraints in the construction of 802.11 was that the sites have to "see" each other. The 802.16 technology can use a wideer range of frequency: 2 - 11 and 10 - 66 GHz, so some of waves reflect, which allows you to build a network, even if the stations cannot see each other directly. Of course, depending on the country and local regulations, some frequencies will not be able to be used. WiMax was designed for point-to-multipoint or to set up networks in a mesh topology, so that they form the structure of wireless MANs and provide Internet access for individual subscribers. This micro-course introduces the reader to the subject of WiMax technology and other modern wireless, packet transmission methods.