Research On The QoS Of The Stream Media In B3G System

The communication trade facing a great change for the communication sercice and the internet technology. The stream media is popular in the internet and 3G network such as VOD,remote education,video telephone,video conference.The stream media application require high Quality of Service and real time response.How to provide a satisfactory service to the stream media is a key in the future communication network. This dissertation research on the QoS of the stream media in the mobile communication system.As a part of the QoS mechanism,the transport protocol is another task of the dissertation. The dissertation research and analyse on the QoS of the stream media in the mobile communication system.First it analyse some data link technoloy in the mobile system.Second it advance some technology that can improve the performance of the mobile system.The dissertation analyse the technology that is used to tranport the steam media.Also it advance some new technology to provide the data-link QoS of the stream media from the delay perfermance,the bandwidth ensure,the friendship to TCP. The system simulation result indicate the effection of this mechanism. The dissertation summarize a new data-link transport protocol that can provide the low delay,high throughout,low drop ratio service to the upper layer.This protocol is improved from the auto require repeat protocol.The dissertation research on this protocol from the sender and receiver.Also it analyse the protocol by planty of example and advance the algorithm of this transport protocol. The data-link simulation result indicate the effection of this protocol.