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Covering network group broadcast protocol technology

An overlay network and multicast technology, applied in the field of computer communications, to ensure stability, facilitate tracking and management, and have high latency sensitivity.

Inactive Publication Date: 2009-07-08
BEIJING JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] Moreover, there is no overlay network multicast protocol that guarantees the minimum average RTT (round-trip time) value between nodes.

Method used

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  • Covering network group broadcast protocol technology
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  • Covering network group broadcast protocol technology

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0043] Embodiment 1: as figure 1 Shown, the specific technical steps adopted by the present invention to solve its technical problems are as follows:

[0044] Step 1. The host user who joined the multicast group sends a joining application, and the server judges the user's legitimacy; otherwise, it returns;

[0045] Step 2. Send a confirmation notification to the user, the user sends his location information to the server, and the server stores the information locally, and the location information includes: the IP address of the host, the name of the ISP to which it belongs, and some basic information of the host user;

[0046] Step 3. After the joining nodes are stabilized, the server starts to group all nodes according to the ISP domain organization method. The server first divides each node into each large domain according to the different ISP of each node. All nodes in each domain belong to the same ISP management, and each domain is grouped again according to the network...

Embodiment 2

[0052] Embodiment 2: First, according to the characteristics of the current Internet network service, the present invention organizes multicast members according to ISP domains. Before the multicast group is established, all nodes that want to join the multicast group will send a join request to the data source server, and through this join request server can ask each node to add its ISP and basic network information, which is convenient for the multicast group Member classification reorganization. After a period of time, when the users joining the nodes are relatively stable, the server begins to group all members; the server first divides them into large domains according to the different ISPs of each node (such as image 3 ), all nodes in each domain are managed by the same ISP. Each domain is grouped again according to the network topology and the number of multicast members. If the number is small, all multicast members in the entire domain will be grouped together; Mul...

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Abstract

A new overlay network multicast protocol, which belongs to the category of multicast technology, is suitable for some network application services that are highly sensitive to delay and relatively stable in node status, such as VOD and large-scale online games. Its characteristics are: (1) The MatrixCast protocol can ensure that the average RTT value between each node is the smallest, that is, the data transmission delay is the smallest. (2) According to the ISP (Internet Service Provider) divisional organization, it is convenient for the network service provider to manage and charge the multicast data, and to track and manage the members of the multicast group. (3) Grouping in the domain facilitates the construction of the RTT matrix within the group, reduces the construction time of the data forwarding tree, and eases the computing pressure on the node server (4) The RTT matrix value is updated regularly, and the node status is adjusted according to the network conditions within the group at any time.

Description

Technical field [0001] The invention relates to an overlay network multicast protocol technology. The invention belongs to the technology in the field of computer communication. Background technique [0002] As a revolutionary technology in the history of IP network development, IP multicast has been more than 20 years since it was first proposed, but multicast is still not widely used. There are many reasons for this, the main reason is that ① IP multicast uses UDP protocol, which cannot provide effective congestion control and reliability guarantee; ② IP multicast requires the router of any node on the network to provide multicast support, so there is Difficulties in deployment; ③The tracking, management and billing of multicast members are difficult to realize, which leads to the unwillingness of network operators to provide IP multicast services. Therefore, how to apply multicast technology to the existing network to make it highly scalable and deployable becomes the k...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L12/28
Inventor 刘云王铮李永昊卯玉成
Owner BEIJING JIAOTONG UNIV
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