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High bit-error long time-delay network self-adaptive transmission method based on network coding

An adaptive transmission and network coding technology, which is applied in end-to-end reliable transmission acceleration and high bit error rate fields of long-delay networks, to achieve the effects of improving transmission performance, improving transmission throughput, and improving confidentiality

Inactive Publication Date: 2010-09-22
SICHUAN UNIV
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  • Application Information

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Problems solved by technology

[0006] So far, there is no transmission protocol that can solve the above two problems at the same time

Method used

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  • High bit-error long time-delay network self-adaptive transmission method based on network coding
  • High bit-error long time-delay network self-adaptive transmission method based on network coding
  • High bit-error long time-delay network self-adaptive transmission method based on network coding

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Experimental program
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Embodiment Construction

[0050] from figure 1 It can be seen that, unlike the traditional TCP / IP protocol model, when network coding is used, a network coding layer is introduced between the transport layer and the network layer. The TCP message is encoded at the network encoding layer at the sending end, and then sent to the lower network layer. On the receiving side, the encoded packet is decoded at the network decoding layer, and then the data packet is sent to the transport layer. Since the encoded message and the non-encoded message adopt different message formats, it is possible to distinguish whether the received message is encoded through the message format, thus ensuring the compatibility between the adaptive network coding transmission mode and the traditional TCP protocol. compatibility.

[0051] The network coding adopts the random linear coding method. This coding method is simple, and it does not take too long to encode and decode. It will not have a great impact on the delay of the da...

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Abstract

The invention relates to a high bit-error long time-delay network self-adaptive transmission method based on network coding. A transmitting terminal conducts self-adaptive network coding to transmitted TCP messages according to the magnitude of the flow of a transmission layer and then transmits the coded messages to a receiving terminal. The receiving terminal obtains original messages through network decoding restoration. Since the transmitting terminal conducts redundant coding to the transmitted messages and the receiving terminal can restore the original transmitted messages as long as partial coded messages are received, the impact of high link bit errors on transmission performance is greatly reduced, the transmission protocol throughput is higher, the retransmission rate of the messages is greatly decreased and the transmission performance is greatly promoted. Moreover, since the self-adaptive coding method is adopted, the confidentiality of information is improved. The methodrequires no support from intermediate nodes for transmission, belongs to an end-to-end reliable transmission acceleration method and is compatible with the current popular reliable transmission protocols.

Description

Technical field [0001] The invention relates to an efficient adaptive reliable transmission method, especially an end-to-end reliable transmission acceleration method for high bit error rate and long delay networks. The technical field of the present invention is end-to-end reliable transmission of the Internet. Background technique [0002] With the development and application of wireless network technology, the integration trend of various types of wireless networks (such as satellite networks, aviation communication networks, wireless mobile networks, etc.) and traditional terrestrial fixed wired networks has become increasingly obvious. The evolution of the network has caused the network structure to become more complex and the heterogeneity of the network to become stronger. From an application perspective, this type of network has characteristics such as high bit error rate (BER) and long delay, and the network has a large bandwidth delay product (BDP). When using th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L1/00H04L29/06H04W28/06H04W80/04H04W80/06
Inventor 秦志红王俊峰董伟张娟
Owner SICHUAN UNIV
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