Patent ID: 8098604

Claim:
A point to multipoint wireless system comprising: a router hub; a plurality of base stations, each of said base stations covering at least one sector; and a plurality of mobile stations and fixed subscriber stations, wherein each of said plurality of base stations maintains two-way data communication with said plurality of mobile stations and fixed subscriber stations in its serving area, over licensed frequency bands below 1 GHz in accordance with the mobile WiMAX air interface standard (ieee802.16e), wherein the mobile WiMAX air interface standard (ieee802.16e) is modified for channel sizes below 1.25 MHz, and wherein the PHY (physical) Layer of each of said plurality of base stations and each of said plurality of mobile and subscriber stations is configured to support channel sizes having a bandwidth less than 1.25 MHz by scaling down the sub-carrier frequency spacing in a linear proportion to the standard mobile WiMAX 128 FFT configuration designed for a 1.25 MHz wide channel.