Adaptive aggregation of metrics for OFDM/OFDMA profile generation
AssigneeARRIS Enterprises LLC
InventorsSanthana Chari, David Emery Virag, Janaki Sajja, Deepak Garageswari Jagannath Rao
Life of this patent
Estimating the term…
Abstract
Devices, systems and methods for adaptively associating a percentile value to each of a plurality of subcarriers at which a cable modem communicates data, the percentiles value used to respectively determine an aggregated RxMER value for each subcarrier. The aggregated RxMER values for the subcarriers may be used to determine and assign one or more bitloading profiles to the cable modem.
Claims15
A method for allocating bitloading profiles to a cable modem, the method comprising:
- receiving error data for the cable modem spanning a plurality of subcarriers;
- selecting a range of subcarriers;
- determining a percentile value based on an analysis of the error data in the selected range;
- using the percentile value to determine an aggregated error metric;
- associating the aggregated error metric with each subcarrier in the selected range;
- determining a plurality of bitloading profiles based on the association of the aggregated error metric with each subcarrier in the selected range;
- and
- allocating at least one of the plurality of bitloading profiles to the cable modems in a manner that affects the throughput of at least one of an OFDM transmission to the cable modem and OFDMA transmission from the cable modem.
A method for allocating bitloading profiles to a cable modem, the method comprising:
- receiving error data for the cable modem spanning a plurality of subcarriers, each subcarrier having a plurality of error datum associated with it;
- incrementally selecting each subcarrier in the plurality of subcarriers and, for each incrementally selected subcarrier:
- determining a percentile value based upon an analysis of the respectively associated plurality of error datum;
- and
- using the determined percentile value to associate an aggregated error metric for the selected subcarrier;
- determining a plurality of bitloading profiles based on the association of the aggregated error metric for each subcarrier in the plurality of subcarriers;
- and
- allocating at least one of the plurality of bitloading profiles to the cable modems in a manner that affects the throughput of at least one of an OFDM transmission to the cable modem and OFDMA transmission from the cable modem.
A CMTS having a processor configured to:
- receive error data for a cable modem spanning a plurality of subcarriers, each subcarrier having a plurality of error datum associated with it;
- incrementally select each subcarrier in the plurality of subcarriers and, for each incrementally selected subcarrier:
- determine a percentile value based upon an analysis of the respectively associated plurality of error datum;
- and
- use the determined percentile value to associate an aggregated error metric for the selected subcarrier;
- determine a plurality of bitloading profiles based on the association of the aggregated error metric for each subcarrier in the plurality of subcarriers;
- and
- allocate at least one of the plurality of bitloading profiles to the cable modems in a manner that affects the throughput of at least one of an OFDM transmission to the cable modem and OFDMA transmission from the cable modem.
Dependencies are inferred from the claim text.