Presented a scalable method of qos provisioning in the broadband residential ethernet - based access network that offers qos guarantees for voip , tv , vod , etc . the cbr encoding control scheme with fixed services promises predictable traffic characteristics , which simplifies qos mechanisms and network designs ; the differentiated approach promises a scalable qos architecture for the carrier - grade broadband residential access network ; combining network dimensioning , diffserv and pricing promises qos provisioning with effectiveness and operability 結(jié)合cbr編碼控制機制和限定服務(wù)類型提供可預(yù)測的通信量特征,簡化了網(wǎng)絡(luò)設(shè)計和服務(wù)質(zhì)量方法的復(fù)雜度:采用區(qū)分服務(wù)方法,滿足了大規(guī)模寬帶社區(qū)網(wǎng)的高擴展性要求;結(jié)合網(wǎng)絡(luò)容量規(guī)劃、 diffserv框架和定價機制研究多業(yè)務(wù)的服務(wù)質(zhì)量,確保了服務(wù)質(zhì)量方法的有效性和可操作性。
Secondly , the author analyzes adaptive encoding control algorithm , pack algorithm and feedback congestion control algorithm suited to mpeg - 4 video . taking into account the matching transport rate and bandwidth , the author gives an improvement and optimization of the feedback congestion control algorithm . finally , a feasible project of network visual telephone is designed 其次,在視頻數(shù)據(jù)的傳輸碼率與網(wǎng)絡(luò)帶寬的適應(yīng)性方面,作者通過分析適用于mpeg - 4視頻適應(yīng)性編碼的控制算法、視頻數(shù)據(jù)打包算法和網(wǎng)絡(luò)擁塞控制算法,提出了網(wǎng)絡(luò)擁塞反饋控制算法的改進和優(yōu)化思想。