Patent ID: 11917670
Assignee: MARVELL ASIA PTE LTD
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 18:
19. The first wireless communication device of claim 11, wherein the circuitry is further configured to:
determine the channel estimate using measurements at the first wireless communication device of one of: i) a request to send (RTS) frame transmitted by the second wireless communication device to the third wireless communication device, the RTS frame having a number of long training fields corresponding to a number of antennas of the second wireless communication device, and ii) a clear to send (CTS) frame transmitted by the second wireless communication device to the third wireless communication device in response to an RTS frame transmitted by the third wireless communication device, the CTS frame having a number of long training fields corresponding to a number of antennas of the second wireless communication device.