Patent ID: 11936590
Assignee: AVAGO TECHNOLOGIES INTERNATIONAL SALES PTE. LIMITED
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. A communications circuit, comprising one or more communications processors configured to:
communicate, with a device, a packet designating a first subset of a plurality of sub-channels of a communication channel comprising punctured 20 MHz channels;
subsequently receive, from the device, a null data packet (NDP) via the first subset of the plurality of sub-channels, wherein a second subset of the plurality of the sub-channels is unused;
estimate characteristics of the communication channel across an entire bandwidth of the communication channel, based on processing the received portion of the NDP; and
transmit, to the device, the estimate via the first subset of the plurality of sub-channels, receipt of the estimate causing the device to process the estimate and ignore a signal received via the second subset of the plurality of sub-channels.