Design And Implementation Of EOC Terminal For Wireline Broadband Access

Cable TV network's two-way transformation is the key to realize the cable broadband access, including access network optical transmission transformation and user access transformation part, in order to make radio and television operators and users to maximize their profits, a scientific and effective reform scheme is vital. This article from catv HFC network status, the reforming scheme proposed network and detail the terminal equipment used in the reconstruction of design and realization process. The main contents include:First of all, according to the present situation of HFC network in optical transmission transformation part adopts Ethernet passive optical network technology, and realize from the radio and television front of light to the village of two-way network node transformation. In order to make full use of cable TV coaxial nets resources, and user access transformation, the EOC technology, part by coaxial network transmission IP signal.Variety, through EOC technology based on comprehensive comparison, choose the low-frequency active HomePlug BPL regulate EOC technology. HomePlug BPL is family plug for electric communication about the alliance, the standard, including physical MAC layer, the rules such as AFE simulation front-end. Realize the EOC have the equipment innings, terminals, network management software, coaxial branch FenPeiWang. The EoC innings finished cable TV signal and IP signal to mix, bureau FenPeiWang at output access coaxial branch, and isolate the EoC terminal by IP signal and cable TV signal.According to the specifications, electric communication EOC terminal design and implementation, including hardware and software of. According to equipment function of the realization of the function block, choice chip into the main control chip, here is chosen HomePlug BPL standards based on the ratio was SPC300 ARM9, its kernel is. Then the pin out chip function, and according to the chip venders datasheet, provide schematic drawing out of power, then mapped printed circuit boards, equipment hardware platform completed. Based on embedded Linux software development, installing Linux on the host PC system, this text in installing version is linux5 redhat and download, install crossover development tools, production, transplantation, system uboot kernel and root file system to the board, debugging to run the program code.