ETHERNET DATA TRANSMISSION METHOD AND PHYSICAL LAYER TRANSMISSION APPARATUS BASED ON BROADCAST TV NETWORK

摘要

An Ethernet data transmission method and a physical layer transmission apparatus based on a broadcast TV network, wherein the method comprising: determining the data transmission speed according to the width of the bidirectional frequency spectrum obligated by the broadcast TV network beforehand, and setting the work speed of sending and receiving of the physical layer transmission apparatus according to the adjusted data transmission speed such that match the work speed and the data transmission speed; after the data having the transmission speed are received and dispatched by the physical layer transmission apparatus, performing the speed match of the data according to the MAC layer interface speed; after the speed match has been completed, the MAC layer interface receives and dispatches the data. The physical layer transmission apparatus comprising: a sending unit (12), a receiving unit (14) and a variable-speed control unit (11), which are used to set the work speed of the physical layer transmission apparatus according to the data transmission speed. By the method and the apparatus, it is possible to perform the Ethernet transmission on the broadcast TV network using the obligated bandwidth of the broadcast TV network sufficiently, and to improve the transmission speed of the Ethernet on the broadcast TV network.