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Method and device for transmitting network sound in radio local area network

A wireless local area network and transmission network technology, applied in the field of transmission network voice, can solve the problems of low efficiency and inability to effectively use the bandwidth of wireless access points, etc., and achieve the effect of reliable service

Inactive Publication Date: 2006-11-22
LENOVO (BEIJING) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of 802.11e is to provide QoS guarantee for multimedia services in wireless LANs, but it needs to be implemented through two scheduling, which is inefficient and cannot effectively use the bandwidth of wireless access points

Method used

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  • Method and device for transmitting network sound in radio local area network
  • Method and device for transmitting network sound in radio local area network
  • Method and device for transmitting network sound in radio local area network

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Experimental program
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Embodiment Construction

[0037] The core of the method of the present invention is to optimize the method of scheduling voice frames under PCF (centralized control mode) in AP (Access Point) in the 802.11 standard, and to schedule voice frames and data frames separately, and to control voice frames during the contention-free period. Frames are subject to centrally controlled round-robin scheduling. During the competition period, distributed CSMA / CA (Carrier Sense Multiple Access / Conflict Avoidance) protocol is used to make data frames share the wireless medium, maximize the use of the access point bandwidth, and enable wireless local area network Maximize the capacity of IP voice customers.

[0038] Those of ordinary skill in the art know that there are mainly two working modes of WLAN (Wireless Local Area Network): an infrastructure mode and a peer-to-peer network mode. The infrastructure mode is centered on the wireless access point. At this time, the wireless access point of WLAN can be regarded as an ...

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PUM

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Abstract

The invention discloses a method for transmitting network voice in a wireless local area network. The method includes: setting different scheduling modes for voice signal frames and data signal frames, using a centralized control protocol to poll and schedule voice frames in a non-competition period, and During the contention period, the distributed carrier sense multiple access / collision avoidance protocol is used to schedule data frames; the polling cycle of the polling scheduling voice frame is determined according to the time when the sending terminal codes the voice and the bandwidth of the AP, and the polling cycle is obtained according to the polling cycle The maximum number of voice users allowed by the access point; establish the transmission of the network voice according to the obtained maximum number of voice users allowed by the network access point. With the invention, the bandwidth of the wireless access point can be fully utilized, the capacity of the IP voice client in the wireless local area network can be improved, and reliable service guarantee can be provided for the user.

Description

Technical field [0001] The present invention relates to the technical field of network communication, in particular to a method and device for transmitting network voice in a wireless local area network. Background technique [0002] At present, with the development of Internet and multimedia communications, VoIP technology has been widely used in enterprise communications. VoIP is a packetized and digital transmission technology based on IP technology. Its basic principle is: compress and encode voice data through a voice compression algorithm, and then package these voice data according to IP and other related protocols, and then transfer the data through the IP network The packet is transmitted to the receiving place, and these voice data packets are stringed together, and after decoding and decompression processing, they are restored to the original voice signal, so as to achieve the purpose of transmitting voice through the IP network. The development of VoIP technology has ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/28H04L29/02
Inventor 华东明杨仁忠孙国滨
Owner LENOVO (BEIJING) LTD