Hybrid Pastry network for voice over Internet protocol (VoIP) service

Abstract

The invention discloses a hybrid Pastry network for a voice over Internet protocol (VoIP) service, which belongs to the technical field of networks. Nodes in the hybrid Pastry network provided by the invention are divided into super nodes and ordinary nodes, wherein the super nodes form a main Pastry network; each super node manages a Pastry sub-network consisting of the ordinary nodes, and keepsand maintains all the information of the nodes in the Pastry sub-networks managed by the super nodes; and when the nodes in the Pastry sub-networks are required to communicate with the other nodes, the other nodes are first searched in the Pastry sub-networks where the nodes are, and if the Pastry sub-networks where the nodes are do not comprise the other nodes, the other nodes are searched in the other sub-networks by the main Pastry network. The hybrid Pastry network also utilizes a dynamic contact frequency grouping method and a recently-contacting node set-trust mechanism method to further improve the searching efficiency of communication among the nodes in the network, and simultaneously introduces a timestamp mechanism to more timely update a node state table and improve the real-time of Internet calls.

Description

technical field [0001] The invention relates to a hybrid pastry network, in particular to a hybrid pastry network for VoIP service, and belongs to the field of network technology. Background technique [0002] A peer-to-peer network (Peer-to-Peer, P2P) is composed of a number of decentralized interconnected peers (computers or other terminal devices), and the nodes share resources and services through direct interaction. Due to its characteristics of information dispersion, equal relationship, and flexible structure, it is widely used in file exchange, information resource sharing, peer-to-peer computing, real-time communication information retrieval, online games, etc. According to statistics, the current Internet based on P2P protocol The traffic has exceeded the network traffic generated by http access. [0003] VoIP (Voice over Internet Protocol) is simply to digitize the analog voice signal (Voice) and transmit it in real time on the IP data network (IP Network) in the...

AI Technical Summary

Problems solved by technology

However, the Chord network with a mixed structure is used for VoIP services, and there are also some shortcomings: the nodes in the Chord network save only some node information in the clockwise direction of the node, and because a large number of nodes join and This has brought a huge test to its fault tolerance, and the efficiency of its node search mechanism similar to dichotomy is not very high in the application of VoIP

Moreover, due to the search method of the Chord algorithm, sometimes the search for the target node will appear to seek far away.

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