Patent ID: 11882596
Assignee: MEDIATEK SINGAPORE PTE. LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. A method of transmitting data in a wireless network, the method comprising:
receiving a request to send (RTS) frame at a wireless access point (AP) from a wireless station (STA), wherein the RTS frame comprises:
a subchannel bitmap indicating allowed subchannels and disallowed subchannels for transmitting a clear to send (CTS) frame responsive to the RTS frame; and
a bandwidth control field comprising: a preamble puncture enabled subfield for indicating an enabled status for preamble puncturing; and a mode subfield for indicating between a static bandwidth indication and a dynamic bandwidth indication; and

transmitting the CTS frame from the wireless AP to the wireless STA over an 80 MHz wireless channel comprising a 20 MHz subchannel, indicated as a particular disallowed subchannel in the subchannel bitmap, wherein the CTS frame comprises a 20 MHz punctured preamble to avoid transmitting on the 20 MHz subchannel.