Abstract: An apparatus and method for estimating velocity and Doppler frequency comprising acquiring a first plurality of time-of-arrival (TOA) measurements from a first plurality of base stations at a first time; acquiring a second and a third plurality of TOA measurements from a second and third plurality of base stations at a second time and a third time; determining a plurality of line-of-sight distance measurements using the first, second and third pluralities of TOA measurements; determining a plurality of velocity estimates and a plurality of angle of arrival (AOA) estimates, using the plurality of LOS distance measurements; determining a plurality of Doppler frequency estimates using the plurality of velocity estimates and the plurality of AOA estimates; and using a processor for determining an average Doppler frequency estimate over a plurality of sectors, wherein the first, second and third pluralities of TOA measurements are acquired over the plurality of sectors.

Abstract: An apparatus and method for non-exclusive multiplexing of at least one active control channel comprising preparing the at least one active control channel for transmission in a next frame using a transmitter data processor; assessing channel robustness of the at least one active control channel based on a channel robustness threshold; and if the channel robustness threshold is not met, performing constellation control or power control on the at least one active control channel which is active prior to transmitting the at least one active control channel; or if the channel robustness threshold is met, transmitting the at least one active control channel using a transmitter.

Abstract: An apparatus and method for non-exclusive multiplexing of at least one active control channel comprising preparing the at least one active control channel for transmission in a next frame using a transmitter data processor; assessing channel robustness of the at least one active control channel based on a channel robustness threshold; and if the channel robustness threshold is not met, performing constellation control or power control on the at least one active control channel which is active prior to transmitting the at least one active control channel; or if the channel robustness threshold is met, transmitting the at least one active control channel using a transmitter.

Abstract: An apparatus and method for estimating velocity and Doppler frequency comprising acquiring a first plurality of time-of-arrival (TOA) measurements from a first plurality of base stations at a first time; acquiring a second and a third plurality of TOA measurements from a second and third plurality of base stations at a second time and a third time; determining a plurality of line-of-sight distance measurements using the first, second and third pluralities of TOA measurements; determining a plurality of velocity estimates and a plurality of angle of arrival (AOA) estimates, using the plurality of LOS distance measurements; determining a plurality of Doppler frequency estimates using the plurality of velocity estimates and the plurality of AOA estimates; and using a processor for determining an average Doppler frequency estimate over a plurality of sectors, wherein the first, second and third pluralities of TOA measurements are acquired over the plurality of sectors.