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

Claim 6:
7. A method, comprising:
communicating, by a first device with a second device, a packet designating a first subset of a plurality of sub-channels of a communication channel comprising punctured 20 MHz channels;
subsequently receiving, by the first device from the second 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;
estimating characteristics of the communication channel across an entire bandwidth of the communication channel, by the first device, based on processing the received portion of the NDP; and
transmitting, by the first device to the second device, the estimate via the first subset of the plurality of sub-channels, receipt of the estimate causing the second device to process the estimate and ignore a signal received via the second subset of the plurality of sub-channels.