Method for designing P2P flow medium system with high play continuation degree

Abstract

The invention relates to a design proposal of a P2P stream media system with high play continuity, which comprises the following steps: 1. the DHT organizing, all nodes in the system are organized in a P2P overlay network according to the DHT method in a distributed way; 2. the purposeful data storage, every node stores k data fragmentations and k is a small constant, and the ID of the stored data fragmentations is closely related to the ID of the nodes; 3. the data scheduling algorithm; 4. the data pre-fetching algorithm; 5. the end. Compared with the prior art, the design proposal of the P2P stream media system has the outstanding advantages that the design proposal adopts a pure distributive method that is simple in realization, can be conveniently embedded into the present P2P stream media system, leads every node in the system to keep stable and high play continuity and is low in overhead.

Description

1. Technical field [0001] The invention relates to a design method of a P2P streaming media system with high playback continuity, and its use has the effect of enabling the system to maintain high playback continuity with relatively low overhead. 2. Background technology [0002] At present, the P2P streaming media system based on the Gossip protocol has become the mainstream of the P2P streaming media system. For example: Journal of Software, 2006, 18 (2): 391-399 (Journal of Software, 2006-18 (2): 391-399) discloses a large-scale video live broadcast based on P2P (peer-to-peer) network System GridMedia. This system uses the Gossip protocol to build an unstructured application layer overlay network, and each node can independently select its own partner node. On the overlay network, each node obtains data from neighboring nodes through a push-pull streaming strategy. [0003] Although the improved Gossip protocol can obtain data more wisely, it cannot overcome the inheren...

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Problems solved by technology

[0003] Although the improved Gossip protocol can obtain data more wisely, it cannot overcome the inherent shortcomings of the Gossip protocol: the randomness and uncertainty of data dissemination. The fragments can be transmitted to each node on time, which leads to the common problem of low playback continuity in the current P2P streaming media system based on the Gossip protocol.

The playback continuity is generally considered to be the most important attribute of a streaming media system, and the discontinuous playback effect is often more harmful to the viewing experience than the low quality effect caused by the low data rate.

At present, there is no design scheme to effectively maintain the high playback continuity of the P2P streaming media system

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