Reverse multiplexer circuit layer protecting and restoring method and device

A multiplexer and circuit layer technology, applied in the field of data communication, can solve the problems of Ethernet frame multiplication, transmission delay increase, bandwidth decrease, etc., and achieve the effect of improving data transmission quality and ensuring forwarding quality

Inactive Publication Date: 2003-09-10
北京润光泰力科技发展有限公司
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Problems solved by technology

It can be seen that bit errors on the E1 line will lead to severe proliferation on the Ethernet frame; moreover, considering the retransmission mechanism of the upper layer communication protocol, frame loss at the data link layer will inevitably lead to a significant drop in bandwidth and transmission delay greatly increased

Method used

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  • Reverse multiplexer circuit layer protecting and restoring method and device
  • Reverse multiplexer circuit layer protecting and restoring method and device
  • Reverse multiplexer circuit layer protecting and restoring method and device

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Embodiment Construction

[0048] figure 1 and figure 2 The principle schematic diagram shown has been described in the background technology section, and will not be repeated here.

[0049] image 3 It is a schematic diagram of the protection and restoration of the circuit layer of the inverse multiplexer. As shown in the figure, a protection and recovery device for an inverse multiplexer circuit layer, the device includes a sending part and a receiving part, and the sending part includes:

[0050] A first-in-first-out module (301), used to sequentially transmit the received valid data to the sending module (302);

[0051] The sending module (302), under the control of the sending control module (304), sends signals from the bit error detection signal generation module (303) and the first-in-first-out module (301);

[0052] The transmission control module (304) judges the transmission performance of the link according to the signal from the link performance feedback receiving module (305), thereby...

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Abstract

This invention discloses a method and device for the protection and recover of a backward multiplexer circuit layer which is to generate and send error bit detection signals at the EI send side and at EI circuit receiving side, when computed circuit bit error rate exceeds the given threshold, it will generate circuit worsen performance information back to the sending to stop sending efficient data to send the bit error detection signals completely, when bit error rate got from the monitor of the receiving side satisfies the requirement of the backward multiplexer, it will inform the sending end to send efficient data to use the said EI channel again.

Description

Technical field: [0001] The invention relates to the technical field of data communication, in particular to a method and a device for protecting and restoring transmission channels in the long-distance transmission of Ethernet data using multiple low-speed channels. Background technique: [0002] With the tremendous development of data communication and the increasing demand for information exchange between computers, local area network technology develops rapidly; and Ethernet, with its own technical advantages, has become the most economical and convenient local area network technology, and has become the , One of the basic communication facilities of the group. However, due to the limitation of the working principle of Ethernet, the transmission radius cannot be too large, so it is only suitable for LAN communication and cannot be used for wide area network transmission. After satisfying the local LAN communication, the majority of users gradually begin to communicate w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/02H04L12/28
Inventor 王庆钢扈俊刚陈永峰
Owner 北京润光泰力科技发展有限公司
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