Wireless Mesh network multicasting communication method of AC-AP (Access Controller-Access Point) framework

Abstract

The invention discloses a wireless Mesh network multicasting communication method of an AC-AP (Access Controller-Access Point) framework. On the basis of the self characteristics of a Mesh network of the AC-AP framework, two communication parties are expanded into simultaneous multisource single point to multiple-point communication from single point to single point communication so as to effectively improve the performance of network communication and improve network transmission efficiency. The method comprises the following steps: each AP added into the network is distributed with one unique overall-situation fixed ID in advance according to a distributed identification allocation algorithm; a multicasting group is maintained by an AC; the multicast carries out addressing on the basis of GID (Group Identification) instead of being based on the traditional multicasting IP address; multicasting between AC-AP and AP-AP is finished by AC cooperation; and in order to improve the multicasting throughput, a multicasting spanning tree is built on the basis of a minimum transmission spanning tree. The wireless Mesh network multicasting communication method is easy and simple, supports the multicasting of two modes of AC-AP and AP-AP, does not need to change the original network on a large scale, is easy to deploy and realize and can effectively improve the average multicasting transmission rate of the wireless Mesh system.

Description

technical field [0001] The present invention relates to the field of wireless communication technology and network management, specifically a method for realizing multicast communication in 802.11WLAN wireless Mesh network, which is used to realize the communication between AC-AP and AP-AP in AC-AP wireless Mesh network. Inter-multicast, and can improve the average throughput of multi-source multicast. Background technique [0002] First, the abbreviations and their definitions in the prior art are explained: [0003] IEEE (Institute of Electrical and Electronics Engineering): Institute of Electrical and Electronics Engineers; [0004] WLAN (Wireless Local Area Network): wireless local area network; [0005] IEEE802.11s: WLAN Mesh protocol draft; [0006] AP (Access Point): Wireless access point, which provides wireless network access services for wireless terminals; [0007] WAP: Wireless Access Point [0008] STA (Station) mobile terminal, a terminal user in WLAN, acc...

AI Technical Summary

Problems solved by technology

On the basis of making full use of the advantages of the AC-AP architecture, the present invention enables the Mesh network to support multicast in both AC-AP and AP-AP modes, and at the same time solves the problem of sharp decline in multicast throughput caused by multi-source multicast, achieving improved Purpose of Multicast Average Throughput

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