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Transmission layer control method based on network coding

A control method and network coding technology, which are applied in the field of network coding-based transport layer control, and can solve problems such as the impact of data transmission performance.

Inactive Publication Date: 2017-06-13
陕西尚品信息科技有限公司
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Problems solved by technology

[0005] The purpose of the present invention is to propose a transmission layer control method based on network coding to solve the problem that the data transmission performance of wireless communication equipment is seriously affected under the public open frequency band with interference, reduce the loss of data packets, and improve throughput and Reduce network delay

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  • Transmission layer control method based on network coding
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  • Transmission layer control method based on network coding

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Embodiment Construction

[0052] In order to make the purpose, technical solutions and advantages of the present invention clearer, the solutions and effects of the present invention are further described in detail.

[0053] The method of the present invention is divided into two parts, the sending end and the receiving end, during application. Such as figure 1 and figure 2 As shown, the present invention comprises the following steps to the described network coding-based transmission layer control method:

[0054] Step 1: Initialization of parameters, including the current round-trip time, the minimum round-trip time and the number of lost packets.

[0055] The receiving end and the sending end initialize parameters at the same time, the current round-trip time RTT, the minimum round-trip time RTT min and the lost packet number losses are initialized to 0, the sequence number seqno_nxt of the next packet to be sent is initialized to 1, the round-trip time is that the packet is sent by the sending ...

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Abstract

The invention discloses a transmission layer control method based on network coding. The implementation scheme of the method comprises the following steps: a transmitting terminal divides the data streams to be transmitted into groups and blocks, wherein each block contains blksize groups, and blksize is the value of the bandwidth multiplied by the network delay; the transmitting terminal codes the groups and then sends the groups; a receiving terminal receives the groups, and then initializes a coding coefficient matrix Cblkno and a corresponding loading matrix Pblkno for each block, also fills the matrix by using the parameters in the groups, and then transmits the ACK corresponding to the groups; the transmitting terminal receives the ACK, and acquires the feedback information in the ACK to schedule the transmission of the groups and the update of the network parameters; and if both the coding coefficient matrix Cblkno and the loading matrix Pblkno are in full rank, and the freedom degree of the blocks is enough, the blocks are decoded, and the data is transmitted to the applications. According to the transmission layer control method based on network coding disclosed by the invention, the problem that the data transmission performance of the wireless communication equipment is seriously affected under the public open frequency band with interference can be solved, the throughput can be increased, and the network time delay can be reduced.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a transmission layer control method based on network coding, which can be used to improve the data transmission performance of a wireless communication device under interference. [0002] technical background [0003] As one of the important areas of today's communication development, wireless communication has become the main way of communication. Use appropriate methods to improve the data transmission efficiency of wireless communication, and improve the performance of data transmission when wireless communication is interfered by public open frequency bands. Common sources of interference in open frequency bands include hidden terminals, heterogeneous technologies, or non-network wireless devices. Currently, the transport layer control TCP method is widely used in wireless communication. This is a connection-oriented, reliable, and byte-stream-based communi...

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Application Information

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IPC IPC(8): H04L1/16
CPCH04L1/1607H04L1/1678
Inventor 徐洋刘涛刘轩
Owner 陕西尚品信息科技有限公司
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