Data packet multiplexing receiving controller and data receiving method

Abstract

This invention is relative to a data package multiplex receiving controlled device and its method for receiving data. It comprises: the PHY process module, the receiving control module, the PROA response module, the CPU setting up module and the up stream buffer module. Design the data length counter in the PHY process module. The PHY process module identifies the packet header, the packet tail, and distinguishes if the AbortSequence coding is at the packet tail to decide if the abandoned messages are saved into up stream buffer. The data of each channel packet and the relevant messages are stored into the up stream module. The up stream module sends the state information about data storage to the PRPA response module, through thresholding , direct indication or address enquiry the state is reported to the master controller.

Description

technical field [0001] The present invention relates to the field of data communication, in particular, to a data packet uplink multiplexing and receiving control circuit device from a link layer (Link Layer) device to a plurality of physical layer (PHY Layer) devices, in particular to a data Packet multiplexes the receiving controller and the method of data receiving. Background technique [0002] In recent years, the rapid development of the Internet has made great progress in IP technology in terms of network structure, transmission capacity and business development. IP is a network layer protocol, and SDH and WDM are physical layer transmission technologies. A data link layer is needed between the two layers. The data link layer is responsible for converting the signals provided by the physical layer into the signals required by the network layer. Currently, there are three most popular IP transmission technologies, namely IP overATM, IP over SDH / SONET and IP over WDM. ...

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Problems solved by technology

[0023] The above is the basic description of the input and output interfaces of link layer devices and physical layer devices in the POS Level 2 protocol. This protocol only specifies the interface mode between physical layer devices and link layer devices, timing characteristics, etc., and does not give Its internal specific structure, and the conversion between channels, the protocol does not stipulate whether there should be a fixed cycle (Dead Cycle). In addition, the applicant did not find any literature on the specific implementation method of the POS interface standard through searching.

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