Patent ID: 8614979

Claim:
An apparatus, comprising: a fixed device having a zone management module operative to perform mobility zone classification for multiple mobile devices in a mobile broadband communications system utilizing an orthogonal frequency-division multiple access technique, the zone management module operative to: assign the mobile devices to different mobility zones based on a spectral characterization parameter representing a type of operating environment for each mobile device, one or more of the mobile devices assigned to a high mobility zone based on the spectral characterization parameter; assign the one or more mobile devices assigned to the high mobility zone to one or more high mobility subzones of the high mobility zone based on a mobility parameter for each of the one or more mobile devices assigned to the high mobility zone; allocate different resources to the mobile devices based on the assigned mobility zones; send midambles to mobile devices assigned to the high mobility zone and not to mobile devices assigned to a regular mobility zone; and utilize a smaller packet size for mobile devices assigned to the high mobility zone than for mobile devices assigned to the regular mobility zone; and a radio communicatively coupled to the zone management module, the radio operative to receive a Doppler codeword from one or more mobile devices, the Doppler codeword comprising the spectral characterization parameter for the one or more mobile devices.