Patent ID: 8976741
Filing Date: 2015-03-10
Classification: H04L,H04W

Abstract:
1. A method comprising: transmitting a downlink transmission to a plurality of wireless nodes, the downlink transmission comprising a demarcation indication of a start of a first uplink transmit opportunity, wherein the demarcation indication is piggybacked with a particular downlink frame in the downlink transmission; receiving, responsive to the downlink transmission and during the first uplink transmit opportunity, multiple uplink transmissions concurrently from the plurality of wireless nodes, wherein each of the multiple uplink transmissions includes a media access control (MAC) header that includes a request for a second uplink transmission opportunity, wherein each of the multiple uplink transmissions comprises uplink data piggybacked with the request, and wherein a network allocation vector (NAV) associated with the multiple uplink transmissions starts upon completion of transmission of the demarcation indication; and transmitting, responsive to the multiple uplink transmissions, an acknowledgement of the uplink data to each of the plurality of wireless nodes, wherein an allocation response is piggybacked with the acknowledgement.