Optical clock rate negotiation for supporting asymmetric clock rates for visible light communication

摘要

A method and apparatus conduct an optical clock rate negotiation to support asymmetric clock rates for visible light communication (VLC) in a VLC device. A first frame that includes a receiver clock rate supported by a first VLC device is transmitted at a predetermined clock rate. A response frame that includes a receiver clock rate supported by a second VLC device is received from the second VLC device. A transmission clock rate of the first VLC device is selected based on the response frame from the second VLC device. Subsequent frames for data communication are transmitted to the second VLC device at the selected transmission clock rate of the first device. Alternatively, when conducting optical clock negotiation in the PHY layer, multiple clock rates are supported within a single frame.

主权项

1. A method of optical clock rate negotiation to support asymmetric clock rates for visible light communication (VLC) in a first device, the method comprising:
transmitting at a predetermined clock rate a first frame comprising at least one receiver clock rate supported by the first device; receiving a response frame from a second device comprising at least one receiver clock rate supported by the second device; selecting a transmission clock rate of the first device based on the response frame from the second device; and transmitting subsequent frames for data communication to the second device at the selected transmission clock rate of the first device, wherein the first frame comprises an association request that comprises capabilities information of the first device, the capabilities information of the first device comprises a plurality of receiver clock rates supported by the first device, the response frame comprises an association grant from the second device that comprises capabilities information of the second device, and the capabilities information of the second device comprises a plurality of receiver clock rates supported by the second device.