Patent ID: 9167309
Filing Date: 2015-10-20
Classification: H04L,H04N

Abstract:
1. A method for transmitting broadcast and data streams in a hybrid fiber coax-based cable network, the method comprising: a first transmission step of a broadcast transmission apparatus sending broadcast and data service streams in an IP-based stream or radio frequency signal form through an optical section up to a plurality of cell nodes, each cell node associated with a cell comprising a plurality of subscriber terminals as a coaxial section subscriber group and comprising a contact point between the optical section and the coaxial section of a cable network and being the coaxial section entry point; and a second transmission step of any one of the cell nodes comprising: performing IP modulation of the radio frequency signals and radio frequency modulation of IP-based stream, for the broadcast and data service streams, depending on a service type of a given associated subscriber terminal and sending the converted broadcast and data service streams to the subscriber terminal through the coaxial section; and allocating a cable frequency channel band to the plurality of subscriber terminals in a given associated cell, wherein an identical cable frequency channel band is allocated to two or more cells, each of which being associated with a respective one of the plurality of the cell nodes, wherein the second transmission step comprises a step of identifying a broadcast service request from the subscriber terminal, selecting only real-watching broadcast service streams corresponding to the request, and converting only the selected broadcast service streams.