Method for realizing L2 layer multicast based on dynamic multicast list
An implementation method and multicast table technology, applied in the field of access network, can solve problems such as system troubles, junk messages, broadcast storms, etc., and achieve the effects of improving utilization, stable and reliable operation, and simple maintenance
Inactive Publication Date: 2012-10-17
INST OF ACOUSTICS CHINESE ACAD OF SCI
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Problems solved by technology
[0004] However, if the broadcast / multicast is not handled well, it will cause a broadcast storm, generate a lot of junk messages, and bring unnecessary troubles to the system. The current wireless communication mobile network is characterized by no fixed base station, and all Users can move arbitrarily, and carry out networking and communication through wireless transmission
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[0044] The present invention will be further described below in conjunction with the accompanying drawings.
[0045] figure 1 It is to establish a multicast structure entity for each user who establishes a data channel. Among them, the three mobile terminals (MS) first access three different base stations (BS), and each base station has a corresponding IP address; then the three base stations access the core network through the aGW gateway, which is the gateway for each The user who establishes the data channel establishes the multicast structure entity, as attached figure 1 shown in the table.
[0046] figure 2 It is the multicast structure entity that is only established in the user's anchor gateway. Among them, the three mobile terminals are MS1, MS2 and MS3 respectively, the anchor gateway of MS1 is aGW2, and the anchor gateway of MS2 and MS3 is aGW1, from figure 2 It can be seen that for MS1 users, a multicast entity is only established on its anchor gateway aGW2, ...
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The invention discloses a method for realizing L2 layer multicast based on a dynamic multicast list. The method is used in a network combined by a mobile network and an Internet network and comprises the following steps of: 1) establishing a multicast structure entity, wherein a mobile terminal user triggers an anchor gateway to establish the multicast structure entity when establishing a data channel; 2) receiving and transmitting a broadcast / multicast message, wherein the anchor gateway transmits / forwards the multicast message according to the content of the multicast list item; and 3) deleting or amending the multicast structure entity, wherein the mobile terminal triggers the anchor gateway to delete or amend the multicast structure entity when deleting the data channel, and the multicast structure entity comprises a local IP address, a remote end IP address and a count value; the local IP address is the IP address of the anchor gateway; the remote end IP address is the IP addressfor a user to access a base station; the count value is the number of the data channels with the same remote IP address as the multicast structure; and the multicast list is a linked list.
Description
technical field [0001] The present invention relates to an access network, in particular, the present invention relates to a method for realizing L2 layer multicast based on a dynamic multicast table. Background technique [0002] Multicast transmission: A point-to-multipoint network connection between the sender and each receiver. If a sender transmits the same data to multiple receivers at the same time, only one copy of the same data packet is required. It improves data transfer efficiency. Reduces the possibility of backbone network congestion. At present, many management packets in the network are sent in the form of multicast or broadcast, such as ARP packets, etc., which reduces the utilization of network resources and greatly improves the processing speed of the system. Therefore, multicast / broadcast technology It occupies an important position in today's network technology. [0003] At present, the technology for implementing multicast is mainly to implement L2 ...
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IPC IPC(8): H04L12/56H04L29/08H04W4/06H04W4/08H04W8/08
Inventor 唐鼎秦小伟赵志军唐晖谭红艳
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI