Method and system for transmitting wireless multicast data

A transmission method and wireless group technology, applied in the direction of digital transmission system, transmission system, wireless communication, etc., can solve the problem of poor IPv6 multicast data transmission quality, achieve smooth video playback, improve transmission quality, and improve transmission effect.

Inactive Publication Date: 2010-12-15
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, under the wireless transmission medium, the transmission quality of IPv6 multicast data is poor, and the user experience needs to be improved,

Method used

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  • Method and system for transmitting wireless multicast data
  • Method and system for transmitting wireless multicast data
  • Method and system for transmitting wireless multicast data

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Embodiment Construction

[0033] In order to solve the problems existing in the prior art, the basic idea of ​​the present invention is as follows: by listening to the MLD (Multicast Listener Discovery, multicast listener discovery) Report (report) message that the wireless user sends, the IPv6 multicast that this request joins The address and the MAC (Media Access Control, Media Access Control) address of the wireless user are recorded in the MLD multicast forwarding table, and when receiving the IPv6 packet whose destination IP address is the multicast group address, the destination MAC address of the packet is The address (multicast address) is modified to the MAC address (unicast address) of the wireless user, and then sent to the wireless user in a unicast manner.

[0034] In this way, since the transmission rate of the wireless transmission medium for unicast data is higher than that for multicast data, transmitting wireless multicast data as unicast can improve transmission quality without affect...

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Abstract

The invention relates to a method and a system for transmitting wireless multicast data, which are used for improving the transmission quality of the conventional wireless IPv6 multicast data. The method comprises the following steps of: recording the correlation of a source MAC address in an MLD Report message, a port and a multicast IP address in the MLD Report message into an MLD multicast forwarding table if judging that the MLD Report message received from the port is sent by a wireless user after a home gateway (HGW) starts an MLD monitor; matching a target IP address of an IPv6 multicast data packet with the multicast IP address recorded in the MLD multicast forwarding table after the HGW receives the IPv6 multicast data packet from streaming media; and judging whether the port corresponding to the matched multicast IP address is a wireless port, if so, forwarding the Pv6 multicast data packet to the wire port after replacing the target MAC address of the IPv6 multicast data packet by an MAC address correlated with the wireless port.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method and system for transmitting wireless multicast data. Background technique [0002] With the rapid development of the Internet, the IPv4 address in the TCP / IP (Transmission Control Protocol / Internet Protocol, Transmission Control Protocol / Internet Protocol) protocol widely used in the existing Internet cannot provide sufficient address space resources for the network. As a result, the research on IPv6, the next-generation Internet protocol, came into being. IPv6-based network protocols are gradually being applied to the Internet, and IPv4 is also gradually evolving to IPv6. In the IPv6 network environment, multicast-based services are widely used, such as IPTV (Internet Protocol Television, Interactive Internet Television) system live broadcast service, network distance learning system, network video live broadcast, etc. The Wireless Local Area Net...

Claims

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Application Information

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IPC IPC(8): H04W4/06H04W80/04H04L12/56H04L29/06H04L29/12
CPCH04L12/1877H04W80/04H04W4/06H04W76/002H04L12/189H04W84/12H04W76/40
Inventor 高建英彭凯
Owner ZTE CORP
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