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Source node selection method

A node selection and source node technology, applied in the field of communication, can solve problems such as reducing user experience, consuming network resources, and excessive cross-regional traffic, and achieving the effects of reducing cross-regional traffic, shortening startup delay, and improving utilization.

Inactive Publication Date: 2009-01-14
韦德宗
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AI Technical Summary

Problems solved by technology

[0004]However, the following problems will arise in the above method of selecting source nodes: when there are many alternative sources, a large number of detection messages will be generated, which will seriously consume network resources; Detection and selection, the playback startup time is longer, which will affect the service quality and reduce the user experience; the selected source node may not be the source node with the closest distance and the best performance, and the response speed is related to the instantaneous state of the client and the instantaneous state of the network. Therefore, many source nodes with long distances may be selected, resulting in excessive cross-region traffic and affecting the overall performance of the network
[0005]However, no reasonable source node selection scheme has been proposed

Method used

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Embodiment Construction

[0022] In this embodiment, a source node selection method is provided.

[0023] In the following description, a network refers to a peer-to-peer network, and nodes in the network (request nodes and source nodes) are peer nodes.

[0024] Such as figure 1 As shown, the method includes: step S102, dividing the network into several partitions, and setting a management server for each partition in the several partitions, each management server is used to manage the relevant information of the nodes in the partition where it is located; step S104 , the requesting node in the network sends a request to the management server of the partition where it is located to obtain data; step S106, the management server of the partition where the requesting node is located searches for the source node that has the shortest physical network distance from the requesting node and has service capabilities, and finds The source node notifies the requesting node; and step S108, the requesting node se...

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Abstract

The invention discloses a source node selecting method, comprising: the step S102, dividing the network into a plurality of partitions, respectively arranging a management server for managing related information in the partitions for each partition of the plurality of partitions; the step S104, transmitting request to the management server in the partitions by the request node in the network, to obtain data; the step S106, finding the source node with service ability and the shortest distance with the physical network of the request node by the management server of the partitions, and informing the found source node to the request node; and the step S108, transmitting the obtained request to the source node by the request node, and obtaining the data. According to the invention, starting delay is shortened, the number of the detecting information is reduced as much as possible, and cross-regional flow is reduced, thereby advancing utilance of the network.

Description

technical field [0001] The present invention relates to the communication field, and in particular, relates to a source node selection method. Background technique [0002] With the rapid development of Internet and broadband access technologies, peer-to-peer (peer to peer, P2P) network video services have been widely used, especially live video and video on demand services. One of the key technologies of P2P video is the selection and replacement mechanism of media source nodes, that is, select some nodes from many alternative media sources as actual media service sources. [0003] At present, P2P technology lacks an effective calculation method for the physical distance between nodes. Usually, a real-time detection method is used to select the source node, that is, the receiving node (also called the requesting node) first sends a detection message to each backup source node, then waits for the source node to respond, and sends the response according to the speed of the r...

Claims

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Application Information

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IPC IPC(8): H04L12/00
Inventor 田洪亮张欣
Owner 韦德宗
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