Patent ID: 8817676
Filing Date: 2014-08-26
Classification: H04B,H04W

Abstract:
1. A method for wireless communication, comprising: directionally transmitting a request for access to a shared wireless communication medium, for directional communication between two wireless stations; receiving a broadcast response indicating a contention-free access period (CFP) during which the wireless stations perform directional communication therebetween via the wireless communication medium by setting their antenna directions to each other; and training antennas of the two wireless stations for determining antenna directions for directional communication with each other; wherein channel time is organized into multiple time frames, each time frame comprising a CFP and a contention-based access period (CAP), wherein each CAP comprising multiple sub-CAPs each based on a different receiving direction, wherein the two wireless stations switch their antenna directions for directional communication with each other during a specified CAP, wherein an information element indicates that in a CAP the wireless stations may perform directional communication therebetween, and the information element is included in each time frame until one of the two wireless stations transmits a relinquish request.