LICENSED BAND ADAPTATIONS

摘要

A technique for providing wireless data access over a licensed cellular radio frequency such as the Personal Communication Services (PCS) band. A wireless local area network (LAN) compliant transceiver, such as compatible with the IEEE 802.11 standard, has a modified final radio frequency (RF) output stage and filtering to shift its frequency of operation from an unlicensed Industrial Science and Medical (ISM) band to comply with PCS band requirements. In the preferred embodiment, the 802.11 compliant transceiving normally operating in an unlicensed band at 2.4 GHz is modified so that its RF portion operates instead within a PCS channel in the 1.9 GHz band. The devices can be deployed as wireless network access points and wireless network adapters operating in the licensed bands, such as by the holders of PCS licenses, to provide a wireless Internet service provider (ISP) type of service over what would otherwise be unused PCS channels.