US Patent No. 10,694,546

MEDIA ACCESS CONTROL FOR DUPLEX TRANSMISSIONS IN WIRELESS LOCAL AREA NETWORKS


Patent No. 10,694,546
Issue Date June 23, 2020
Title Media Access Control For Duplex Transmissions In Wireless Local Area Networks
Inventorship Liwen Chu, San Ramon, CA (US)
Hongyuan Zhang, Fremont, CA (US)
Hui-Ling Lou, Sunnyvale, CA (US)
Assignee NXP USA, Inc., Austin, TX (US)

Claim of US Patent No. 10,694,546

1. A method implemented by a first communication device that is capable of duplex transmissions, wherein duplex transmissions involve simultaneously transmitting and receiving via a same wireless frequency band, the method comprising:receiving, at the first communication device, duplex transmission permission information corresponding to a transmit opportunity period (TXOP) established by a second communication device, the duplex transmission permission information indicating that the second communication device permits a duplex transmission during the TXOP and while the second communication device transmits, wherein the duplex transmission permission information is received from the second communication device via a wireless transmission, and wherein the duplex transmission permission information is included in a media access control layer (MAC) protocol data unit (MPDU);
in response to receiving the duplex transmission permission information, determining, at the first communication device, that the first communication device is permitted to perform the duplex transmission during the TXOP;
receiving, at the first communication device, a first packet from the second communication device during the TXOP, wherein the first packet spans a wireless communication channel; and
transmitting, by the first communication device, a second packet while the first communication device is receiving the first packet, and wherein the second packet is transmitted in the wireless communication channel.