Patent ID: 8503359

Claim:
A system, comprising: a first device for performing wireless directional communications with a second device, the wireless directional communications comprising: setting a network allocation vector (NAV) in response to detecting a network reservation from a third device; receiving, during a time period indicated by the NAV, a request-to-send (RTS) from the second device; transmitting, to the second device, either a denial-to-send (DTS) for a time period before expiration of the NAV or a delayed clear-to-send (D-CTS) for a time period after expiration of the NAV, the DTS indicating to the second device not to initiate communications until after expiration of the NAV; and performing communications with the second device after the expiration of the NAV and after said transmitting, said communications taking place during a time period indicated by the RTS from the second device; wherein said transmitting comprises transmitting a DTS; and the first device is to receive a second RTS from the second device after the expiration of the NAV and is to transmit a clear-to-send (CTS) after receiving the second RTS but before said performing.