Segmented recombination method used for Gigabit passive optical network
A passive optical network, gigabit technology, applied in the selection device of multiplexing system, multiplexing communication, time-division multiplexing system, etc., to achieve high transmission rate, simplify the use of hardware resources and the development cycle Effect
Inactive Publication Date: 2014-01-22
南京艾科朗克信息科技有限公司
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In addition to providing reliable and high-quality access network services, achieving cost-effective implementation remains a major challenge for the industry
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[0011] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0012] figure 1 It is a schematic structural diagram of the segmentation reorganization method used in the gigabit passive optical network of the present invention.
[0013] See figure 1 , the segmental recombination method for the Gigabit passive optical network provided by the present invention adopts two FPGA boards to connect to form an optical network unit; adopts two FPGA boards to connect to form an optical line terminal; between the two FPGA boards The data transmission rate is 1.24 Gbit / s; multiple optical network units and optical line terminals are connected to form a GPON system through a single-mode optical fiber and a passive optical splitter; the FPGA board is connected to an Ethernet client for receiving data , voice, and video sources, and generate upstream services with different interleaves and different frame sizes to simulate an o...
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The invention discloses a segmented recombination method used for a Gigabit passive optical network. A plurality of parallel flow lines are reduced into one. The method comprises the following steps that a, the user data length is monitored in real time; b, the user data is padded according to the system data bus width, so the user data realizes the width alignment with a system data bus; c, finally, the client data is separated into a GEM (Gigabit passive optical network encapsulation method) effective load, an optical network unit uses an instruction level parallelization and task level parallelization processing method, the service data realizes the mutual communication through a passage or a FIFO (first in first out) queue, and in addition, the loop level flow line and the iterative module dispatching are deployed. The segmented recombination method used for the Gigabit passive optical network provided by the invention has the advantages that the higher transmission speed can be realized, the hardware resource use and development period can be simplified, and in addition, the system performance cannot be influenced.
Description
technical field [0001] The invention relates to a segment recombination method for data packets, in particular to a segment recombination method for gigabit passive optical networks. Background technique [0002] Gigabit Passive Optical Network (GPON) is one of the currently popular optical access network technologies. GPON uses a point-to-multipoint network architecture and provides a single network topology. It provides data, voice and video services with QoS by means of transport containers (TCONT) and dynamic bandwidth allocation (DBA). [0003] GPON can support legacy TDM services as well as an increasing number of bandwidth-hungry applications, such as high-definition television over IP. It can also be seen as a widely recognized candidate for implementing a Next Generation Access (NGA) network, capable of supplying 10 Gbit / s downstream and up to that rate upstream. The technical challenges to be overcome to implement 10 Gbit / s have been resolved. In addition to pro...
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Login to View More IPC IPC(8): H04J3/16H04Q11/00
Inventor 秦轶轩
Owner 南京艾科朗克信息科技有限公司