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Cloud-assisted cooperative downloading method of mobile P2P network

A P2P network and mobile assisted technology, applied in the field of accelerating the download progress of terminals in the mobile P2P network, can solve problems such as unstable wireless bandwidth/link quality, affected data transmission quality, and affected application quality.

Active Publication Date: 2014-11-19
CHONGQING UNIV OF POSTS & TELECOMM
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0006] At present, the node terminals in the mobile P2P network have limited display / calculation / storage / bandwidth capabilities; there are various access methods (3G / WLAN / WiMax); users frequently join / exit, which affects the stability and load of the P2P network; The terminal has the characteristics of portability and online at any time, which is more flexible than the fixed terminal; the wireless bandwidth / link quality in the mobile P2P network is unstable, and the quality of data transmission is affected; the fluctuation generated by mobile IP and data forwarding affect the application quality; Changes, the maintenance overhead of application layer routing is high

Method used

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  • Cloud-assisted cooperative downloading method of mobile P2P network
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  • Cloud-assisted cooperative downloading method of mobile P2P network

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Embodiment Construction

[0022] A non-limiting embodiment is given below in conjunction with the accompanying drawings to further illustrate the present invention. It should be understood, however, that these descriptions are exemplary only, and are not intended to limit the scope of the invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0023] It is assumed that the joining process of nodes obeys the monotonically decreasing possion distribution. Terminal nodes in the entire network will not leave until they have obtained a complete file, and all node users are randomly distributed in the network. An endpoint's upload bandwidth is less than its download bandwidth.

[0024] Such as figure 1 Shown is a flow chart of the cloud-assisted mobile P2P network cooperative downloading mechanism in the present invention. It includes the following steps: initializing the number ...

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Abstract

The invention discloses a cloud-assisted cooperative downloading method of a mobile P2P network, a cloud center carries out distribution of file pieces according to computing power of nodes, a modified ant colony algorithm is utilized in a downloading process of each node in a user layer, the nodes with quick downloading speed are searched as promoters for ant way-finding, the nodes with quick downloading speed are mutually optimized as neighbor nodes of each other, so that convergence of the file pieces to an optimal node can be accelerated, and minimization of the average downloading time of the nodes in the whole network is taken as a target to complete the whole downloading process. According to the cloud-assisted cooperative downloading method, the downloading efficiency of a terminal user is directly improved; meanwhile, the expenditure of local flow of a mobile terminal is indirectly reduced.

Description

technical field [0001] The invention belongs to the field of mobile P2P, and specifically relates to a technology for accelerating the download progress of a terminal in a mobile P2P network with the assistance of a cloud center. Background technique [0002] In recent years, with the rapid development of mobile networks, the conditions for the development of mobile P2P have matured. P2P technology has been widely used in traditional wired networks, such as file sharing, distributed computing, video playback, IP layer voice calls, game network platforms, etc., and has penetrated into almost every aspect of people's lives. Therefore, more and more research institutions are gradually active in the research of mobile P2P network. However, due to the physical limitations of wireless channels, dynamic changes in network topology, limitations of nodes themselves, lack of infrastructure support, and heterogeneity of mobile devices, mobile networks are different from limited networ...

Claims

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Application Information

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IPC IPC(8): H04L29/08
Inventor 唐红杨宝荣芳芳赵国锋刘媛妮焦景丽黄小荣
Owner CHONGQING UNIV OF POSTS & TELECOMM
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