IP data packet transmission method and system

Abstract

The invention provides an IP data packet transmission method and a system thereof. The method comprises the following steps: step one, local nodes determine neighbor nodes of upper level and lower level on other nodes; step two, the local nodes receive IP data packets from the neighbor nodes of upper level; step three, the local nodes forward IP data packets to nodes of lower level according to IP address corresponding to the neighbor nodes of lower level and a unique identification on a network link layer; and step four, the local nodes replicate the IP data packets and forward the replicated IP data packets to a playing terminal according to IP address of multicast and the unique identification of the playing terminal of the local nodes on the network link layer. The method and the system of the invention ensures that the network is easy to expand, can execute real-time dynamic connection without manual configuration and improve connection speed as well as playing quality and realize unified playing.

Description

technical field [0001] The invention relates to the communication field, in particular to an IP data packet transmission method and system. Background technique [0002] When the location and number of nodes in the network often change, it is suitable to use a peer-to-peer network. In a peer-to-peer network, we often use AODV (Ad-hoc On-Demand Distance Vector routing, on-demand distance vector routing), DSR ( Routing methods such as Dynamic Source Routing Protocol (Dynamic Source Routing Protocol) and FSR (Fisheye State Routing, fisheye routing), but in some occasions, such as using PLC (Power Line Communication, power line communication) equipment to form a train car broadcasting network, each PLC devices are physically connected linearly. The above method not only has a slow connection speed, but also may cause problems of hidden nodes and exposed nodes, resulting in a decrease in network performance. In addition, when multicasting IP video streams on a peer-to-peer netwo...

AI Technical Summary

Problems solved by technology

[0002] When the location and number of nodes in the network often change, it is suitable to use a peer-to-peer network. In a peer-to-peer network, we often use AODV (Ad-hoc On-Demand Distance Vector routing, on-demand distance vector routing), DSR ( Routing methods such as Dynamic Source Routing Protocol (Dynamic Source Routing Protocol) and FSR (Fisheye State Routing, fisheye routing), but in some occasions, such as using PLC (Power Line Communication, power line communication) equipment to form a train car broadcasting network, each PLC devices are physically connected linearly. The above method is not only slow in connection speed, but also may cause problems of hidden nodes and exposed nodes, resulting in a decrease in network performance.

In addition, in the multicast IP video stream under the peer-to-peer network, since each node cannot uniformly adopt a high-speed modulation method, it can only adopt a relatively conservative modulation method, which limits the bandwidth and causes frequent packet loss. The playback effect of the set-top box is not good, and the mosaic is serious.

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