Mobile Wireless Internet
A wireless connection can be either licensed or unlicensed. In the US, licensed connections use a private spectrum the user has secured rights to from the FCC. In other countries, spectrum is licensed from the country's national radio communications authority (such as the ACMA in Australia).Licensing is usually expensive and often reserved for large companies who wish to guarantee private access to spectrum for use in point to point communication. Because of this, most wireless ISP's use unlicensed spectrum which is publicly shared and therefore more prone to interference.
Wireless Mobile Internet Technology
Now, Wireless Broadband technologies include new services from companies such as Verizon, Sprint, and Cingular, which allow a more mobile version of this broadband access. Consumers can purchase a PC-card, laptop-card, or USB equipment to connect their PC or laptop to the internet via cell-phone towers. This type of connection would be stable in any area that could also receive a strong cell-phone connection.