Multimedia session service quality management method under multiple radio network integrated environment

Abstract

This invention relates to a variety of quality management methods of multimedia conversational service in wireless network convergence environment. It includes: user II sends a one-way multimedia sessions to user I, when user I decides to switch his terminal, he must do the following steps: A1) user I will judge the type of the target network when switching happens; A2) user I sent a switch signal to the user II, the switch signal records the type of the target network; A3) users II receives the switch signal which is sent in the steps A2) by users I, and then adjusts the local audio / video encoding rate according to the type of the target network in the switch signal; A4) after the step A3), user II sends a switch confirmed signal back to the user I; A5) user I waits for the switch confirmed signal of user II after the steps A2), when It receives the switch confirmed signal, implement of switching immediately. The invention can improve service quality of multimedia communication effectively.

Description

technical field [0001] The present invention relates to the technical field of multimedia communication, in particular to a multimedia session quality of service (Quality of Service, QoS) management method in a wireless network convergence environment composed of multiple access technologies. Background technique [0002] With the continuous advancement of Internet technology, based on the classic IP network, multimedia communication represented by digital TV, Internet telephony, video conferencing, and distance teaching is experiencing rapid development. Especially in today's ever-changing mobile communication and multimedia technologies, various wireless network access technologies (such as WLAN, GPRS and WCDMA, etc.) and various audio and video coding schemes provide users with a great choice space, enabling users to truly realize Multimedia communication anytime, anywhere. [0003] Most of the current mainstream mobile Internet technologies are based on the integration ...

AI Technical Summary

Problems solved by technology

If the audio and video encoding rate cannot be reduced in time when the network bandwidth is reduced, it will lead to an increase in the packet loss rate of the communication receiver, voice pauses, "mosaics" or even stagnation of the video screen, and other adverse effects

On the other hand, if the audio and video data rate cannot be increased in time when the network bandwidth increases, the bandwidth cannot be fully utilized to improve the quality of multimedia communication.

[0005] Another feature of wireless network is that it is easily interfered by external factors such as buildings and electronic equipment, and the bandwidth fluctuates greatly, and the bit error rate is high.

In the case of no handover, if the audio and video data rate remains unchanged at this time, the quality of multimedia communication services may also decrease due to continuous changes in bandwidth.

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