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Virtual coordinate system constructing and routing methods of CDN-P2P (Content Distribution Network-Peer-to-Peer) network

A CDN-P2P, virtual coordinate technology, applied in the field of computer networks, can solve the problem of not being optimal for service nodes, and achieve the effects of low delay measurement overhead, simple implementation, and strong robustness

Active Publication Date: 2012-11-21
XIAMEN MEIYA PICO INFORMATION
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Problems solved by technology

[0006] The present invention provides a virtual coordinate system construction and routing method of a CDN-P2P network, which is used to solve the problem that the existing CDN-P2P routing method is not optimal enough for the service node redirected by the client requesting the service currently

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  • Virtual coordinate system constructing and routing methods of CDN-P2P (Content Distribution Network-Peer-to-Peer) network
  • Virtual coordinate system constructing and routing methods of CDN-P2P (Content Distribution Network-Peer-to-Peer) network
  • Virtual coordinate system constructing and routing methods of CDN-P2P (Content Distribution Network-Peer-to-Peer) network

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Embodiment Construction

[0044] In order to solve the routing problem of the existing CDN-P2P network, the embodiment of the present invention first provides a method for constructing a virtual coordinate system suitable for the CDN-P2P network architecture, and provides an update method for the virtual coordinate system, and then proposes CDN-P2P routing method based on virtual coordinates. Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0045] 1. Construction and update of virtual coordinate system

[0046] In order to solve the problems of the prior art, the present invention firstly provides a CDN-P2P network architecture (such as figure 1 The construction method of the virtual coordinate system of the shown network architecture), such as figure 2 As shown, the method includes the following steps:

[0047] S1: The tracker selects several CDN edge servers in the network as reference nodes, and uses the Global Network Positi...

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Abstract

The invention provides a virtual coordinate system constructing method of a CDN-P2P (Content Distribution Network-Peer-to-Peer) network. The method comprises the following steps that a tracker firstly selects a plurality of CDN edge servers as reference nodes and a basic coordinate system is constructed by utilizing a GNP (Global Network Positioning) virtual coordinate algorithm according to time delay information among the CDN edge servers which are used as the reference nodes; and then, adding various CDN edge servers which are not used as the reference nodes and various peer nodes into the constructed virtual coordinate system by utilizing the GNP virtual coordinate algorithm. The invention further provides a routing method of the CDN-P2P network. The method comprises the following steps that the tracker redirects a resource service request of a client to the CDN edge server which has the closest geometrical distance from the client according to coordinates of all the nodes in the network; and the CDN edge server redirects the resource service request of the client to a service node which has the closest geometrical distance from the client. The routing method can accurately redirect a client request in the CDN-P2P network to the optimal service node, is simple to realize and has smaller time delay and measurement expenses.

Description

technical field [0001] The invention relates to the field of computer networks, in particular to a method for constructing a virtual coordinate system of a CDN-P2P network and a CDN-P2P routing method based on the virtual coordinates. Background technique [0002] With the exponential growth of Internet users and the emergence of emerging services (such as streaming media), users have an increasing demand for bandwidth, which has caused great pressure on the backbone network. In order to solve this problem, Content Delivery Network (CDN) and P2P are proposed. Because CDN has high controllability and stability, and P2P has good scalability and low cost, these two Technology is widely used in practical network applications. However, due to the inherent disadvantages of both: expensive CDN deployment, poor scalability, and poor controllability and stability of P2P, neither of them can better meet the needs of users. However, the two are complementary to a certain extent, so r...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L29/08
Inventor 王大彬
Owner XIAMEN MEIYA PICO INFORMATION
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