Patent ID: 8755402
Filing Date: 2014-06-17
Classification: H04W

Abstract:
1. A method, comprising: transmitting a directional request-to-send (DRTS) to a first wireless communications device; receiving, from the first wireless communications device, a first directional clear-to-send (DCTS), the first DCTS comprising a first duration field to indicate a time period for subsequent communications, first and second device fields to indicate two devices to participate in the subsequent communications, a third device field to indicate a device transmitting the first DCTS, and a fourth device field to indicate a device to whom the first DCTS is addressed; transmitting, to a second wireless device, a second DCTS, the second DCTS comprising a second duration field to indicate the time period for the subsequent communications, wherein the subsequent communications is to be between the first wireless communications device and a wireless communications device that transmitted the DRTS, wherein the second DCTS causes the second wireless device to set an indication not to transmit to any device during the time period if the second DCTS indicates that a device to whom the second DCTS is addressed is also a data source device in the subsequent communications; and transmitting a third DCTS to a third wireless communications device over a previously established directional link; wherein said receiving and said transmitting are performed during a contention access period over a wireless communications medium through at least one directional link.