Multicast method, multicast system and multicast equipment

A multicast group and device technology, applied in the field of data transmission in wireless communication, can solve the problems of increasing system burden, controlling multicast flooding, and low reliability of multicasting, so as to suppress multicast flooding and improve reliability , the effect of reducing the burden

Inactive Publication Date: 2008-08-20
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] This adds a lot of unnecessary burden to the Mesh network and seriously affects the security of the system
Moreover, the Mesh network is a wireless transmission environment, and cannot use methods such as port control to control multicast flooding like a wired network. Therefore, the harm

Method used

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  • Multicast method, multicast system and multicast equipment
  • Multicast method, multicast system and multicast equipment
  • Multicast method, multicast system and multicast equipment

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Embodiment Construction

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0032] In the embodiment of the present invention, the sending end authenticates the receiving end requesting to join the multicast group, and updates or creates forwarding items for the receiving end after passing the authentication, and then reports the request to join the multicast group to the upstream forwarding device step by step (hereinafter join group request for short), and each upstream forwarding device updates or creates corresponding forwarding items for its downstream forwarding device or sender, so that no device in the system will transmit multicast frames for illegal receivers.

[0033] figure 1 It is an exemplary structural diagram of a multicast system in an embodiment of the present invention. like figure 1 As...

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Abstract

The invention discloses a multicast method, comprising following steps: a sending end authenticates a receiver requesting to attend to multicast group according to the adding group request of the receiver; the sending end adds the receiver passing authentication to a transmission item corresponding to the multicast group which is requested to attend to, and sends the adding group request for a transmission device; the transmission device adds the sending end to the transmission item corresponding to the multicast group which is requested to attend to according to the adding group request from the sending end. The invention also discloses a multicast system and a multicast device. The invention is that the sending end authenticates the receiver request to attend to the multicast group, and after passing authentication the receiver upgrades or establishes the transmission item, then progressively report the adding group request to the upstream transmission device, and each upstream transmission device upgrades or establishes corresponding transmission item for downstream transmission device or the sending end, so that in the system, any device is not an illegal receiver transmission multicast frame. The invention also reduces system burden and improves reliability of the multicast.

Description

technical field [0001] The invention relates to data transmission technology in wireless communication, in particular to a multicast method, a multicast system and a multicast device. Background technique [0002] Multicast is a data transmission method between unicast and broadcast, that is, the destination address of the data frame is a multicast address, and the sender only transmits the data frame to multiple receivers belonging to the multicast group. end. In wireless communication, the difference between multicast and unicast is that multicast only sends a copy of the data; the difference from broadcast is that multicast traffic is only received and processed by listening devices that are members of the multicast group. For this one-to-many data transmission, multicast is more efficient than unicast and broadcast. [0003] Taking multicast transmission in a wireless mesh (Mesh) network as an example, since any wireless device node in the network can act as a Mesh net...

Claims

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Application Information

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IPC IPC(8): H04Q7/22H04L12/18
CPCH04L12/185
Inventor 冯丹凤张军平张慧敏莫良耀黄浩
Owner HUAWEI TECH CO LTD
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