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1. 发明申请

WO2010025093A1 A METHOD AND APPARATUS FOR RELIABLE MEDIA TRANSPORT 审中-公开
标题翻译：一种可靠的媒体传输方法与装置
公开(公告)号：WO2010025093A1
公开(公告)日：2010-03-04
申请号：PCT/US2009/054660
申请日：2009-08-21
申请人： NTT DOCOMO, INC. , SEFEROGLU, Hulya , KOZAT, Ulas, C. , CIVANLAR, M., Reha , KEMPF, James
发明人： SEFEROGLU, Hulya , KOZAT, Ulas, C. , CIVANLAR, M., Reha , KEMPF, James
IPC分类号： H04L1/00
CPC分类号： H04L1/0009 , H04L43/0858 , H04L43/0864
摘要： Methods and apparatuses to model the relation between the delay samples and congestion losses and to protect media flows against congestion losses are disclosed. In one embodiment, the method comprises measuring congestion by delay samples, and performing a dynamic FEC algorithm that uses convex hull clustering for loss-event classification, including determining an FEC rate according to the loss-event classification. In another embodiment, the method comprises measuring congestion by delay samples, modeling loss events associated with the delay samples by grouping loss events as unions of convex hulls to identify a period of potentially increased congestion, dynamically changing the FEC rate based on the modeling, and applying FEC protection to the media flow during the period based on the FEC rate. In yet another embodiment, the method comprises forming clusters using past loss events and their { FTT, FṪT } or { RTT, RṪT } estimates, and estimating future loss events using most recent { FTT, FṪT } or { RTT, RṪT } estimates and their membership in convex hull clusters.
摘要翻译：公开了对延迟样本和拥塞损失之间的关系进行建模并保护媒体流免遭拥塞损失的方法和装置。在一个实施例中，该方法包括通过延迟样本来测量拥塞，以及执行使用用于丢失事件分类的凸包聚类的动态FEC算法，包括根据丢失事件分类来确定FEC速率。在另一个实施例中，该方法包括通过延迟采样来测量拥塞，通过将损失事件分组为凸包的联合来建模与延迟样本相关联的损失事件，以识别潜在增加的拥塞的周期，基于建模来动态地改变FEC速率，以及基于FEC速率在该周期期间对媒体流应用FEC保护。在另一个实施例中，该方法包括使用过去的损失事件及其{FTT，F？T}或{RTT，R？T}估计来形成集群，并且使用最近的{FTT，F？T}或{ RTT，R？T}估计及其在凸包集群中的隶属度。

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