VoIP optimization method for multi-hop transmission in wireless LAN

Abstract

The invention relates to a method for optimizing multi-hop transmission of VoIP in a wireless local area network in the field of wireless transmission technique, which comprises the following steps: firstly, maximum connection number of the wireless local area network to the VoIP is measured, which is called threshold value; data encapsulation mode and transmission mode of an MAC layer are chosendynamically according to current busy status of the network, to be specific: queue length of nodes and size of the threshold value are compared; if the queue length waiting for service is less than the threshold value, the MAC layer applies standard 802.11 MAC protocol and packs and transmits every data packet according to the mode regulated by the 802.11 MAC; if the queue length waiting for service is more than the threshold value, every K data packet is packed and transmitted in the manner of burst-queue. The method of the invention obviously improves the integrity of transmission of the VoIP in the wireless network and the capacity of the network increased by nearly 100% under the requirement of regulated voice communication quality.

Description

technical field The invention relates to a method in the technical field of wireless transmission, in particular to an optimization method for VoIP multi-hop transmission in a wireless local area network. Background technique For the application of VoIP (Voice over IP) in WLAN, predecessors have done a lot of work. Part of the work is to study the pure voice transmission in the wireless local area network. Under the constraints of different MOS (mean opinion value) in different speech coding methods, the capacity of the Internet phone that the wireless local area network (802.11b) can support; and the other part of the research is in In the case of simultaneous transmission of voice data and other data packets in the wireless local area network, different MAC (media transfer protocol) protocols are used to estimate the performance of the wireless network through simulation. After searching the literature of the prior art, it was found that Timo Vanhatupa et al. in "2005 IE...

AI Technical Summary

Problems solved by technology

But this article does not give a feasible method on how to improve the performance of wireless LAN in the case of multi-hop transmission

Images