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1.发明授权公开(公告)号：US11451862B2
公开(公告)日：2022-09-20
申请号：US17127653
申请日：2020-12-18
申请人： ERICSSON AB
发明人： Chris Phillips , Charles Hammett Dasher , Mark Robertson , Robert Hammond Forsman , Jennifer Ann Reynolds
IPC分类号： H04N21/438 , H04L65/60 , H04N21/643 , H04N21/44 , H04N21/6373 , H04N21/845 , H04L65/70 , H04L65/612 , H04L65/75
摘要： A system and method for effectuating fast channel change in an adaptive streaming environment. A plurality of adjacent channels may be predicted relative to a current streaming channel engaged by a client device. Upon prioritizing the adjacent channels, the client device may be configured to pre-fetch metadata and initialization information for a subset of the prioritized adjacent channels based on bandwidth conditions, video player buffer status, etc. When a channel is changed, the client device is operative to use the pre-fetched data to quickly obtain encoded media content at a select bitrate for rendering.
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公开(公告)号：US20180070114A1
公开(公告)日：2018-03-08
申请号：US15812728
申请日：2017-11-14
申请人： ERICSSON AB
IPC分类号： H04N21/2385 , H04N21/6405 , H04N21/2343 , H04N21/647 , H04N21/643 , H04N21/438 , H04N21/6379 , H04N21/6408 , H04N21/845
CPC分类号： H04N21/2385 , H04N21/234327 , H04N21/234363 , H04N21/4384 , H04N21/6379 , H04N21/6405 , H04N21/6408 , H04N21/64322 , H04N21/64738 , H04N21/64769 , H04N21/8456
摘要： A system and method for effectuating channel changes in a multicast adaptive bitrate (MABR) streaming network using a dedicated bandwidth pipe for burst transmitting a requested channel's data. A video management agent is configured to stitch burst-transmitted data with the regular channel stream during the channel change to generate a hybrid stream, which is multicast streamed toward the requesting device. Once the data from the regular channel stream is properly joined, burst transmission ceases and the bandwidth consumed for sending burst-transmitted data is released.
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公开(公告)号：US09621614B2
公开(公告)日：2017-04-11
申请号：US14811092
申请日：2015-07-28
申请人： Ericsson AB
IPC分类号： G06F15/16 , H04L29/06 , H04L29/08 , H04L12/863
CPC分类号： H04L65/602 , H04L47/623 , H04L65/4076 , H04L65/4084 , H04L67/1095
摘要： Apparatuses and methods control communication of content streams through a content distribution network. A data repository is accessed to retrieve information which identifies a group of user equipment nodes that are registered with one of a plurality of subscriber accounts and which further identifies weight values that are associated with the group of the user equipment nodes. Communication bit rates that are provided by a weighted fair queuing scheduler node to individual ones of a group of the content streams within bandwidth allocated to a virtual pipe for carrying the group of the content streams through the content distribution network to the group of the user equipment nodes, are regulated responsive to the weight values associated with the group of the user equipment nodes. Weighted fair queuing scheduling can thereby be provided at a virtual pipe level and, furthermore, at a user equipment node level.
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公开(公告)号：US09826261B2
公开(公告)日：2017-11-21
申请号：US14848672
申请日：2015-09-09
申请人： Ericsson AB
IPC分类号： H04N7/173 , H04N21/2385 , H04N21/6405 , H04N21/643 , H04N21/438 , H04N21/647
CPC分类号： H04N21/2385 , H04N21/234327 , H04N21/234363 , H04N21/4384 , H04N21/6379 , H04N21/6405 , H04N21/6408 , H04N21/64322 , H04N21/64738 , H04N21/64769 , H04N21/8456
摘要： A system and method for effectuating channel changes in a multicast adaptive bitrate (MABR) streaming network using a dedicated bandwidth pipe for burst transmitting a requested channel's data. A video management agent is configured to stitch burst-transmitted data with the regular channel stream during the channel change to generate a hybrid stream, which is multicast streamed toward the requesting device. Once the data from the regular channel stream is properly joined, burst transmission ceases and the bandwidth consumed for sending burst-transmitted data is released.
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公开(公告)号：US09621933B2
公开(公告)日：2017-04-11
申请号：US14671025
申请日：2015-03-27
申请人： Ericsson AB
IPC分类号： H04N7/173 , H04N21/2385 , H04N21/6373 , H04N21/472 , H04N21/647 , H04N21/2381 , H04N21/24 , H04N21/2662
CPC分类号： H04N21/2385 , H04N21/2381 , H04N21/2402 , H04N21/2662 , H04N21/47202 , H04N21/6373 , H04N21/64738
摘要： A system and method for providing VOD/NPVR content in a switched digital video network using unicast adaptive bitrate (ABR) streaming. In one implementation, upon receiving a notification from a back office pursuant to the VOD session request from a subscriber station (e.g., a set-top box or STB), a bandwidth pipe modeling process is operative to model a bandwidth pipe corresponding to each edge QAM device configured to support VOD sessions for selecting a particular edge QAM device that can best accommodate the requested VOD session. Bitrates of UABR streams of existing VOD sessions of the selected edge QAM device may be adjusted in order to accommodate a particular UABR stream at a chosen bitrate for the requested VOD session. UABR allocations of the selected edge QAM's bandwidth pipe may be effectuated for the existing VOD sessions and the requested VOD session as needed. A response message including one or more session frequencies, if the session request is accommodated, may be transmitted to the requesting subscriber station.
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6.发明申请SYSTEM AND METHOD FOR MANAGING ABR BITRATE DELIVERY RESPONSIVE TO VIDEO BUFFER CHARACTERISTICS OF A CLIENT 审中-公开用于管理对客户的视频缓冲特性的ABR双向传送的系统和方法公开(公告)号：US20160366202A1
公开(公告)日：2016-12-15
申请号：US14737550
申请日：2015-06-12
申请人： Ericsson AB
CPC分类号： H04L65/602 , H04L43/08 , H04L65/4084 , H04L65/80 , H04N21/23439 , H04N21/2401 , H04N21/2402 , H04N21/2407 , H04N21/26258 , H04N21/6373 , H04N21/8456
摘要： A scheme for managing delivery of segmented media content in an ABR network, wherein bitrates of a manifest file may be selectively modified or removed based on a client device's video buffer characteristics. An ABR stream delivery server is operative to simulate the client device's video buffer in a streaming session and accordingly modify the manifest files to include metadata for media segments encoded at a particular single bitrate responsive to the buffer performance and other network conditions. Responsive to monitoring the video buffer characteristics of the media player during the streaming session, a selected single bitrate may be moved up or down to other bitrates of the manifest files.
摘要翻译： 一种用于管理ABR网络中的分段媒体内容的传送的方案，其中可以基于客户端设备的视频缓冲器特性来选择性地修改或删除清单文件的比特率。 ABR流传送服务器可操作以在流式传输会话中模拟客户端设备的视频缓冲器，并相应地修改清单文件以响应于缓冲器性能和其他网络条件而包含以特定单个比特率编码的媒体片段的元数据。 响应于在流媒体会话期间监视媒体播放器的视频缓冲器特性，所选择的单个比特率可以向上或向下移动到清单文件的其他比特率。
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公开(公告)号：US10652165B2
公开(公告)日：2020-05-12
申请号：US15488978
申请日：2017-04-17
申请人： Ericsson AB
IPC分类号： H04L12/927 , H04L29/06 , H04L12/801 , H04N21/2343 , H04N21/24 , H04N21/2662 , H04N21/442 , H04N21/61 , H04N21/845
摘要： A method of managing bandwidth allocation across a video pipe that delivers both streaming adaptive bitrate (ABR) content and progressive download ABR content includes receiving a designation of a congestion boundary within a video pipe, the congestion boundary designating a first percentage of the video pipe that is to be used for streaming ABR content when congestion exists on both sides of the congestion boundary, wherein a remaining percentage of the video pipe is to be used for progressive download ABR; allocating bandwidth for streaming ABR content, wherein the gateway device can allocate for streaming content only that portion of the remaining percentage of bandwidth that is not requested for progressive download content; and allocating bandwidth for progressive download content, wherein the gateway device can allocate for progressive download content only that portion of the first percentage of bandwidth that is not requested for streaming content.
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公开(公告)号：US10389783B2
公开(公告)日：2019-08-20
申请号：US15713658
申请日：2017-09-24
申请人： ERICSSON AB
发明人： Robert Hammond Forsman , Chris Phillips , Jennifer Ann Reynolds , Charles Hammett Dasher , Steve Martin
IPC分类号： H04L29/06 , H04N21/643 , H04N21/658 , H04N21/845
摘要： An adaptive streaming server, a method, and a system are described herein that create a content stream to be delivered to one or more clients by segmenting the content into data structures which are stored in random access memory (volatile storage) rather than segmenting the content into segment files which are stored on a disk or database (non-volatile storage).
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公开(公告)号：US20180013807A1
公开(公告)日：2018-01-11
申请号：US15713658
申请日：2017-09-24
申请人： ERICSSON AB
发明人： Robert Hammond Forsman , Chris Phillips , Jennifer Ann Reynolds , Charles Hammett Dasher , Steve Martin
IPC分类号： H04L29/06 , H04N21/658 , H04N21/643 , H04N21/845
CPC分类号： H04L65/60 , H04L65/4084 , H04L65/602 , H04L65/607 , H04N21/64322 , H04N21/6581 , H04N21/8456
摘要： An adaptive streaming server, a method, and a system are described herein that create a content stream to be delivered to one or more clients by segmenting the content into data structures which are stored in random access memory (volatile storage) rather than segmenting the content into segment files which are stored on a disk or database (non-volatile storage).
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公开(公告)号：US09843828B2
公开(公告)日：2017-12-12
申请号：US14670945
申请日：2015-03-27
申请人： Ericsson AB
IPC分类号： H04N7/173 , H04N21/2385 , H04N21/222 , H04N21/2365 , H04N21/2662 , H04N21/6405 , H04N21/643 , H04N21/647 , H04N21/239 , H04N21/238 , H04N21/24 , H04N21/258 , H04N21/6338 , H04N21/6373
CPC分类号： H04N21/2385 , H04N21/2221 , H04N21/2365 , H04N21/23805 , H04N21/2393 , H04N21/2402 , H04N21/25808 , H04N21/2662 , H04N21/6338 , H04N21/6373 , H04N21/6405 , H04N21/64322 , H04N21/64738 , H04N21/64761 , H04N21/64769
摘要： A system and method for providing non-guaranteed channels in a switched digital video network using multicast adaptive bitrate (ABR) streaming. In one implementation, upon receiving a request for a non-guaranteed channel is received from a subscriber station (e.g., a set-top box or STB), a bandwidth pipe modeling process is operative to model a bandwidth pipe corresponding to each edge QAM device configured to support non-guaranteed channels for selecting a particular edge QAM device that can best accommodate the requested non-guaranteed channel. Bitrates of MABR streams of existing channels of the selected edge QAM device may be adjusted in order to accommodate a particular MABR stream at chosen bitrate of the requested non-guaranteed channel. IGMP Join operations may be effectuated, as needed, to join MABR streams of the existing channels and the requested non-guaranteed channel to correct IGMP group(s). A channel change response message including one or more channel frequencies, if the change request is accommodated, may be transmitted to the requesting subscriber station.
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