Weak security multicast rate allocation method based on network coding for multimedia data streams

A multimedia data stream and network coding technology, which is applied in the field of weakly secure multicast rate allocation based on network coding for multimedia data streams, and achieves the effect of optimizing the weighted data transmission throughput and improving the weighted data transmission throughput.

Active Publication Date: 2018-06-29
SUZHOU UNIV
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  • Application Information

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Problems solved by technology

However, after using network coding and adding security restrictions to the network, how to improve the throughput rate of network commu

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  • Weak security multicast rate allocation method based on network coding for multimedia data streams
  • Weak security multicast rate allocation method based on network coding for multimedia data streams
  • Weak security multicast rate allocation method based on network coding for multimedia data streams

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with accompanying drawing and embodiment:

[0029] Embodiment: In multicast communication, the transmission mode of multimedia data stream has always been one of the key research directions in the field of network data communication. However, in the transmission of multimedia data streams, combining the three issues of transmission topology selection, rate allocation and secure linear network coding design to optimize the weighted data transmission throughput of multicast transmission under weak security conditions has not yet been related. Invention Example.

[0030]The characteristics of network coding make it have advantages in throughput optimization, load balancing, system robustness, information security and so on. In addition, in multicast communication, the use of network coding can make the multimedia data transmission throughput reach the theoretical upper limit, thereby improving the utiliz...

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Abstract

The invention discloses a weak security multicast rate allocation method based on network coding for multimedia data streams. The method comprises the following steps: obtaining a communication network where the multimedia data streams are located and parameters of the multimedia streams thereon, comprising a node set composed of a single server, all routers and a client receiving all data, a directed link set between the nodes in the node set, the capacity of each link, the number of data streams in the multimedia streams, a set of these data streams, and the weight of each data stream; expressing the communication network as a directed graph according to the obtained parameters; establishing a mathematical model of an optimal rate allocation method based on linear programming according to the directed graph; solving the mathematical model; and obtaining the maximum weighted data transmission throughput rate and a corresponding rate allocation scheme, that is, the transmission rate oneach link, of the multimedia stream transmission under a weak security condition. By adoption of the weak secure multicast rate allocation method, malicious intermediate routing nodes where the multimedia data stream transmission path in the multicast communication passes through met the weak security requirements, and the weighted throughput rate of the secure transmission is improved, thereby providing good security and improving the utilization rate of network resources.

Description

technical field [0001] The invention designs the application of network coding in the field of multicast multimedia stream transmission, and in particular relates to a rate allocation method that satisfies weak security requirements in multicast multimedia stream transmission based on network coding. Background technique [0002] With the advent of the big data era, network traffic continues to grow rapidly. Cisco predicts that in 2016, IP traffic will reach ZB level, and in 2020, IP traffic will reach 2.3ZB. Overall, IP traffic continued to grow at a CAGR of 22% from 2015 to 2020. In addition, by 2020, the number of devices connected to IP networks will exceed 3 times the total population of the world. Therefore, how to enable so many devices to efficiently receive large-capacity data information from the Internet, improve network throughput, and improve utilization of network resources will become a very challenging problem. At the same time, due to the surge in data tr...

Claims

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Application Information

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IPC IPC(8): H04L12/751H04L12/761H04L29/06H04L45/02H04L45/16
CPCH04L45/02H04L45/16H04L63/1441H04L63/164H04L65/60H04L65/75H04L65/611
Inventor 王进温正清贾俊铖朱艳琴张书奎
Owner SUZHOU UNIV
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