Abstract: A method for distributing the QOS processing in a broadband access system to the system modems and the head-end equipment. Requests for a change in the operating parameters are transmitted on an exception basis, thereby greatly reducing the amount of system over-head required. In the upstream, the Cable Modem Termination System (CMTS) or Wireless Modem Termination System (WMTS or Wireless Hub) determines a signal-to-noise ratio (SNR) or Bit Error Rate (BER) (or similar measurable parameter) quality data for each received packet. If a measured parameter is outside of the predetermined limits, then the WMTS reports to the NMS (Network Management Operating System) the modem ID and the measured data of the particular packet. The NMS may then modify the operating parameters. In the downstream, each modem determines an SNR or BER (or some other measurable parameter) measurement for the incoming packets. These values may be compared to some boundary conditions.

Abstract: A method for correcting for the offset carrier frequency in a wireless modem is provided. The method further allows for the periodic correction of the offset of the carrier frequency. A Fine tuning method is implemented that uses fine tuning frequency increments to determine minimum and maximum edges of a received frequency from which to calculate an offset used to adjust the transmitted frequency or the receiver of the wireless modem. Power correction is performed for variances in received signal power by adjusting an output power relative to differences in received power compared to an expected received power value.

Abstract: A system and method for controlling a transverter from a wireless modem unit (WMU). A WMU delivers a control signal to a transceiver. This signal is outside the IF signal data range (preferably below 11 MHz). The signal is carried on the cable between the transceiver and the WMU. This signal is detected by the transceiver, and determines the timing and the control information. The signal is ASK modulated to enable low data rate transfer of messages between the WMU and the transceiver. The control signal is detected at the transverter using a detector circuit. Additionally, specific transverter detection circuits are disclosed to detect the control signal.