Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V.

Kai Lennert Bober

Volker Jungnickel

Jonas Hilt

Dominic Schulz

Anagnostis Paraskevopoulos

Malte Hinrichs

Pablo Wilke-Berenguer

Techniques (e.g., method, apparatuses, etc.) for permitting communications, e.g., optical communications are described. In one example, a first communication apparatus may send a bit allocation table, BAT, message, to a second communication apparatus. The BAT update information has a BAT update information signalling update information for updating a BAT which is signalled to be updated. The BAT update information groups information into different groups of subcarriers, wherein the BAT update information has, for each group of subcarriers, information indicating the number of carriers in the group.

Communication techniques

Techniques (e.g., method, apparatuses, etc.) for permitting communications, e.g., optical communications are described. In one example, a first communication apparatus for the communication with a second communication device may obtain a channel state information from the reception of one or more reference signals and/or beacon signals from one or more frontends of the second apparatus. The first communication apparatus may transform the channel state information from a frequency domain to a time domain, to obtain a time domain channel state information. The first communication apparatus may encode the time domain channel state information. The first communication apparatus may transmit the time domain channel state information to one or more frontends. The first communication apparatus may transmit channel information for association and updated channel information for network coordination in a contention access period and collision-free period, CFP, respectively.

Examples relating to techniques for wireless communications, e.g., visible light communication, VLC, are disclosed. In particular, there is disclosed a communication device for communicating with a plurality of other devices, using a wireless link. The device provides individual reference signals using a number of subcarriers or time slots in accordance to the optical clock reference and the number of transmitting devices in the set or streams to be transmitted in parallel. The device defines the position of subcarriers or of signals at the time slots in accordance to an identification number associated to an individual device within the whole set of transmitting devices or in dependence on an identification number identifying a specific stream or transmitter. The device transmits the reference signal which enables the plurality of receiving devices to identify the signal coming from the individual communication device in the whole set of devices.

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Berlin, Germany

Kai Lennert Bober