Patent ID: 8948683
Filing Date: 2015-02-03
Classification: H04K,H04W

Abstract:
1. A method for communication, comprising: in at least one transmitter that transmits one or more data streams to respective target receivers and one or more jamming streams for preventing the data streams from being decoded by eavesdropping receivers, holding a definition of at least first and second transmission modes having respective, different first and second levels of security in preventing the data streams from being decoded by the eavesdropping receivers; selecting one of the first and second transmission modes for transmitting a data stream to a target receiver by evaluating a selection criterion; and transmitting the data stream and the jamming streams via an antenna array using the selected transmission mode, wherein transmitting the data stream using the first transmission mode comprises transmitting at least one jamming stream simultaneously with the data stream, and wherein transmitting the data stream using the second transmission mode comprises transmitting the data stream while inhibiting transmission of the jamming streams.