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1. 发明申请

WO2010092327A3 BANDWIDTH ALLOCATION CONTROL IN MULTIPLE VIDEO STREAMING 审中-公开
标题翻译：多视频流中的带宽分配控制
公开(公告)号：WO2010092327A3
公开(公告)日：2010-12-29
申请号：PCT/GB2010000217
申请日：2010-02-05
申请人： BRITISH TELECTOMMUNICATIONS PLC , NILSSON MICHAEL ERLING , TURNBULL RORY STEWART , CRABTREE IAN BARRY , APLLEBY STEPHEN CLIFFORD , MULROY PATRICK JOSEPH
发明人： NILSSON MICHAEL ERLING , TURNBULL RORY STEWART , CRABTREE IAN BARRY , APLLEBY STEPHEN CLIFFORD , MULROY PATRICK JOSEPH
IPC分类号： H04L29/06 , H04L12/54 , H04N7/26
CPC分类号： H04L12/5695 , H04L47/10 , H04L47/38 , H04L47/70 , H04L47/801 , H04L47/822 , H04L47/826 , H04L65/602 , H04L65/80
摘要： A video sequence is to be transmitted at a selectable quality from a server over a network. A network control protocol operates in response to a control parameter to allocate to the server a share of available transmission capacity in proportion to the value of the control parameter. First, one determines a plurality of transmission rate values that are needed over successive time periods of the sequence for successful transmission of the sequence at a reference quality; then the control parameter is set, proportional to the transmission rate value and communicated to the control protocol at corresponding time instants. The sequences can then be transmitted, encoded at a quality from time to time selected in dependence upon the actual transmission capacity made available by the network to the server.
摘要翻译：以可选择的质量通过网络从服务器发送视频序列。网络控制协议响应于控制参数而操作，以与控制参数的值成比例地向服务器分配可用传输容量的份额。首先，确定在序列的连续时间段中以参考质量成功传输序列所需的多个传输速率值; 然后将控制参数设置为与传输速率值成比例，并在相应的时刻传达给控制协议。然后可以按照根据网络向服务器提供的实际传输容量不时选择的质量来传输，编码序列。

2. 发明申请

WO2010092327A8 BANDWIDTH ALLOCATION CONTROL IN MULTIPLE VIDEO STREAMING 审中-公开
标题翻译：多视频流中的带宽分配控制
公开(公告)号：WO2010092327A8
公开(公告)日：2011-08-18
申请号：PCT/GB2010000217
申请日：2010-02-05
申请人： BRITISH TELECOMM , NILSSON MICHAEL ERLING , TURNBULL RORY STEWART , CRABTREE IAN BARRY , APPLEBY STEPHEN CLIFFORD , MULROY PATRICK JOSEPH
发明人： NILSSON MICHAEL ERLING , TURNBULL RORY STEWART , CRABTREE IAN BARRY , APPLEBY STEPHEN CLIFFORD , MULROY PATRICK JOSEPH
IPC分类号： H04L29/06 , H04L12/54 , H04N7/26
CPC分类号： H04L12/5695 , H04L47/10 , H04L47/38 , H04L47/70 , H04L47/801 , H04L47/822 , H04L47/826 , H04L65/602 , H04L65/80
摘要： A video sequence is to be transmitted at a selectable quality from a server over a network. A network control protocol operates in response to a control parameter to allocate to the server a share of available transmission capacity in proportion to the value of the control parameter. First, one determines a plurality of transmission rate values that are needed over successive time periods of the sequence for successful transmission of the sequence at a reference quality; then the control parameter is set, proportional to the transmission rate value and communicated to the control protocol at corresponding time instants. The sequences can then be transmitted, encoded at a quality from time to time selected in dependence upon the actual transmission capacity made available by the network to the server.
摘要翻译：以可选择的质量通过网络从服务器发送视频序列。网络控制协议响应于控制参数而操作，以与控制参数的值成比例地向服务器分配可用传输容量的份额。首先，确定在序列的连续时间段中以参考质量成功传输序列所需的多个传输速率值; 然后将控制参数设置为与传输速率值成比例，并在相应的时刻传达给控制协议。然后可以按照根据网络向服务器提供的实际传输容量不时选择的质量来传输，编码序列。

3. 发明申请

WO2010092323A3 MODIFICATIONS OF EXPLICIT CONGESTION NOTIFICATION (ECN) BY SKIPPING CONGESTION EXPERIENCED (CE) EVENTS 审中-公开
标题翻译：通过实践经验（CE）活动对显示意向通知（ECN）的修改
公开(公告)号：WO2010092323A3
公开(公告)日：2010-12-23
申请号：PCT/GB2010000163
申请日：2010-02-01
申请人： BRITISH TELECOMM PUBLIC LTD CO , TURNBULL RORY STEWART , NILSSON MICHAEL ERLING , CRABTREE IAN BARRY , HOARE STEVE , MULROY PATRICK JOSEPH
发明人： TURNBULL RORY STEWART , NILSSON MICHAEL ERLING , CRABTREE IAN BARRY , HOARE STEVE , MULROY PATRICK JOSEPH
IPC分类号： H04L29/06 , H04L12/56
CPC分类号： H04L65/80 , H04L47/10 , H04L47/122 , H04L47/17
摘要： There is proposed a modification to the ECN protocol to remove the one-to-one relationship between the network signalling congestion and the sender response to that congestion. The result is to allow a receiver terminal to exhibit some control of bandwidth share relative to other receiver terminals. The idea is to filter the congestion experienced (CE) markings arriving at a receiver such that they do not correspond directly with the setting of the ECN echo (ECE) flag in acknowledgement packets sent back to the sender. In particular, the idea is to skip a specific number of CE markings such that fewer than normal acknowledgement packets with ECE flags set are sent back to the sender. This gives the receiver some control over the frequency of congestion window reduction (CWR) events at the sender and thus exhibit some control on the transmission rate from the sender.
摘要翻译：提出了对ECN协议的修改以消除网络信令拥塞与对该拥塞的发送者响应之间的一对一关系。结果是允许接收机终端相对于其他接收机终端表现出对带宽共享的一些控制。这个想法是对到达接收机的拥塞经验（CE）标记进行过滤，使得它们不直接与发送回发送方的确认分组中的ECN回显（ECE）标志的设置相对应。特别地，该思想是跳过特定数量的CE标记，使得具有设置ECE标志的正常的确认分组的发送回发送给发送方。这给接收机一些控制发送方拥塞窗口缩减（CWR）事件的频率，从而对发送方的传输速率进行一些控制。

4. 发明申请

WO2010100427A1 VIDEO STREAMING 审中-公开
标题翻译：视频流
公开(公告)号：WO2010100427A1
公开(公告)日：2010-09-10
申请号：PCT/GB2010000390
申请日：2010-03-04
申请人： BRITISH TELECOMM , NILSSON MICHAEL ERLING , TURNBULL RORY STEWART , CRABTREE IAN BARRY , APPLEBY STEPHEN CLIFFORD , MULROY PATRICK JOSEPH , HOARE STEVE
发明人： NILSSON MICHAEL ERLING , TURNBULL RORY STEWART , CRABTREE IAN BARRY , APPLEBY STEPHEN CLIFFORD , MULROY PATRICK JOSEPH , HOARE STEVE
IPC分类号： H04N7/26 , H04N7/30
CPC分类号： H04N19/177 , H04N19/126 , H04N19/147 , H04N19/15 , H04N19/152 , H04N19/164 , H04N19/61
摘要： A video sequence to be encoded is divided into a plurality of temporal portions, and analysed to determine (at least for each portion after the first), in accordance with a plurality of encoding quality settings, (i) a quality metric for the portion and (ii) the number of bits generated by encoding the portion at that quality setting. These data are analysed, for example using a Viterbi-like trellis, to choose a set of quality settings, one per portion, that tends to minimise a combined quality cost for the sequence. This the combined quality cost is the sum of individual quality costs each of which is a function of the quality metric of the respective encoded portion. The sequence is encoded using the chosen quality settings. In order to determine each individual quality cost, despite not knowing precisely what network throughput will be available at any given time in the future, one proceeds by estimating receiver buffer fullness and its standard deviation. From said estimates, the probability of buffer underflow and or overflow is obtained, the individual quality costs being a function also of the underflow and/or overflow probability.
摘要翻译：要编码的视频序列被划分为多个时间部分，并且根据多个编码质量设置进行分析以确定（至少对于第一个之后的每个部分），（i）该部分的质量度量，以及（ii）通过对该质量设置处的部分进行编码而产生的比特数。分析这些数据，例如使用类似维特比的网格来选择一组质量设置，每一部分趋向于使序列的组合质量成本最小化。这样，组合质量成本是每个质量成本的总和，每个质量成本是相应编码部分的质量度量的函数。序列使用所选的质量设置进行编码。为了确定每个单独的质量成本，尽管不知道将来在任何给定时间内什么网络吞吐量将可用，但是通过估计接收器缓冲器充满度及其标准偏差来进行。从所述估计，获得缓冲器下溢和溢出的概率，个体质量成本也是下溢和/或溢出概率的函数。

5. 发明申请

WO2008119954A3 BANDWIDTH ALLOCATION CONTROL IN MULTIPLE VIDEO STREAMING 审中-公开
标题翻译：多视频流中的带宽分配控制
公开(公告)号：WO2008119954A3
公开(公告)日：2008-12-18
申请号：PCT/GB2008001069
申请日：2008-03-27
申请人： BRITISH TELECOMM , APPLEBY STEPHEN CLIFFORD , MULROY PATRICK JOSEPH
发明人： APPLEBY STEPHEN CLIFFORD , MULROY PATRICK JOSEPH
IPC分类号： H04L29/06 , H04N7/26
CPC分类号： H04L65/602 , H04L65/4084 , H04L65/80 , H04N19/115 , H04N19/164 , H04N21/23106 , H04N21/2365 , H04N21/23655 , H04N21/2385 , H04N21/2402 , H04N21/26216 , H04N21/4347 , H04N21/47202 , H04N21/64322 , H04N21/8456
摘要： The bitrate for any practical video streaming system will vary considerably as a function of the difficulty of encoding the sequence in question. This variation is even more apparent when comparing different video clips of different genres for example where sports clips might require a higher average bitrate and fluctuate more due to the high activity of typical scenes, whereas a news report clip might require a much lower bitrate and be relatively static. As such, to deliver video streams at a constant quality to users sharing a contended network, a constant bandwidth method is not efficient to use across all the streams. The bandwidth allocated to each stream must be allowed to dynamically vary in time in accordance with the precise demands of the video being streamed at that time and also be within any network bandwidth constraints. The present invention defines such a method.
摘要翻译：任何实际的视频流系统的比特率将随编码所述序列的难度而变化很大。当比较不同类型的不同视频剪辑时，这种变化更加明显，例如，运动剪辑可能需要更高的平均比特率，并且由于典型场景的高活动而波动更多，而新闻报道剪辑可能需要低得多的比特率比较静态因此，为了将共享竞争网络的用户以恒定的质量传送视频流，恒定带宽方法在所有流中使用是无效的。必须允许分配给每个流的带宽在时间上根据当时流传输的视频的精确需求而动态变化，并且也在任何网络带宽限制内。本发明定义了这种方法。

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