Ethernet switching equipment and method switching multicast to unicast based on IGMP protocol

Abstract

The invention relates to a piece of Ethernet switching equipment and method switching multicast to unicast based on IGMP protocol in wireless local area network. The switching equipment comprises an IGMP management module, an uplink WAN interface and a downlink Ethernet interface. The IGMP management module is respectively connected to the uplink WAN interface and the downlink Ethernet interface. The downlink Ethernet interface comprises a wireless interface. The IGMP management module comprises a multicast switching to unicast control unit and a multicast forwarding table storage unit connected with each other. The multicast switching to unicast control unit is connected to the uplink WAN interface and the downlink Ethernet interface. The invention further relates to a method using the equipment for switching multicast to unicast. After the equipment and method provided by the invention are adopted, no wireless driving module is needed to conduct additional technical process to the multicast packet, so that the efficiency is improved, and at the same time the packet loss rate of the multicast is greatly reduced, and better experience is provided to the user. Furthermore, the embodiment method of the invention is simple, low in cost and wide in application range.

Description

technical field [0001] The invention relates to the technical field of wireless local area network, in particular to the technical field of multicast and unicast conversion in the wireless local area network, and specifically refers to an Ethernet switching device and method for realizing multicast to unicast based on the IGMP protocol. Background technique [0002] In wireless local area network technology, wireless packets are susceptible to interference during transmission, resulting in packet loss. For video, the user's intuitive experience when packet loss occurs is mosaic and pause. In the wireless unicast transmission mode, the packet loss rate is reduced to a reasonable level due to the use of received packet confirmation and retransmission technology. When wireless video unicast, the user experience is very good, and there is almost no mosaic or pause phenomenon. However, since multicast is a one-to-many transmission, confirmation and retransmission cannot be perfor...

AI Technical Summary

Problems solved by technology

Although such a solution can solve the problem of poor user experience in multicast to a certain extent, its disadvantage is that the implementation of this technical solution first requires the support of the wireless driver module itself. In addition, even if the wireless driver module provides wireless multicast The function of converting to unicast, but its implementation is complicated, prone to problems, and the conversion efficiency is not high

Therefore, the practical application value of this solution in the prior art is low

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