公开(公告)号：US20200099624A1

公开(公告)日：2020-03-26

申请号：US16698575

申请日：2019-11-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Nu XIA ,  Jinhui ZHANG ,  Qikun WEI

IPC: H04L12/825 ,  H04L12/927 ,  H04L12/853 ,  H04L12/801 ,  H04L12/835 ,  H04L29/06

Abstract: A flow control method and system, and a device are provided to implement flow control in a process of transmitting a media stream between devices. The method includes: receiving, by a first device, a media stream that is sent by a second device at a first rate; instructing based on a rate of a media stream in a first time period in which a buffer usage rises from a first threshold to a second threshold, the second device to send a media stream to the first device at a second rate which is less than the first rate; instructing based on a rate of a media stream in a second time period in which the buffer usage rises from the second threshold to a third threshold, the second device to send a media stream to the first device at a third rate which is not greater than the second rate.

公开(公告)号：US20150326898A1

公开(公告)日：2015-11-12

申请号：US14806475

申请日：2015-07-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Youqing YANG ,  Lu ZHANG ,  Jinhui ZHANG

IPC: H04N21/24 ,  H04N21/61 ,  H04N21/437 ,  H04N21/236 ,  H04N21/239 ,  H04N21/472 ,  H04N21/643

CPC classification number: H04N21/2402 ,  H04N21/23605 ,  H04N21/23614 ,  H04N21/2393 ,  H04N21/437 ,  H04N21/47202 ,  H04N21/6125 ,  H04N21/6175 ,  H04N21/64322

Abstract: Embodiments of the present disclosure provide a method, a device and a system for evaluating a user experience value of video quality. The method is: acquiring an uplink packet of a user equipment for requesting to watch an OTT video, where the uplink packet is transmitted by the user equipment to a video server storing the OTT video and carries request information of the user equipment on the OTT video; acquiring a downlink packet corresponding to the uplink packet, where the downlink packet is transmitted by the video server to the user equipment and carries the OTT video, and the OTT video is transmitted by the video server according to the request information in the uplink packet; buffering the downlink packet; and in response to determining that the buffered downlink packet satisfies a resolving condition, resolving the OTT video in the buffered downlink packet to generate a user experience value.

Abstract translation: 本公开的实施例提供了用于评估视频质量的用户体验值的方法，设备和系统。 该方法是：获取请求观看OTT视频的用户设备的上行分组，其中上行分组由用户设备发送到存储OTT视频的视频服务器，并在OTT视频上携带用户设备的请求信息 ; 获取对应于上行链路分组的下行分组，其中下行分组由视频服务器发送给用户设备并携带OTT视频，OTT视频由视频服务器根据上行分组中的请求信息发送; 缓冲下行数据包; 并且响应于确定所缓冲的下行链路分组满足解析条件，解析所缓冲的下行链路分组中的OTT视频以产生用户体验值。

公开(公告)号：US20210303259A1

公开(公告)日：2021-09-30

申请号：US17345689

申请日：2021-06-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Chao LIU ,  Jie XIONG ,  Jinhui ZHANG ,  Lihong FENG

IPC: G06F3/16 ,  G10L19/008

Abstract: This application discloses an audio stream switching method and apparatus. After a switching device receives a switching instruction, the switching device determines a synchronization relationship between a switch-in stream and a switch-out stream, determines a parameter value of a switching point of the switch-in stream based on the synchronization relationship and a timestamp of a packet in the switch-in stream, and determines a timestamp of a switching point of the switch-out stream based on the synchronization relationship and a timestamp of a packet in the switch-out stream, and/or the switching device switches a packet that is in the switch-out stream and whose parameter value is greater than the parameter value of the switching point of the switch-out stream to a packet that is in the switch-in stream and whose parameter value is greater than the parameter value of the switching point of the switch-in stream.

公开(公告)号：US20130024889A1

公开(公告)日：2013-01-24

申请号：US13622839

申请日：2012-09-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiaojun YAN ,  Jinhui ZHANG ,  Hui XIA

IPC: H04N21/458

CPC classification number: H04L12/1881 ,  H04N21/23424 ,  H04N21/252 ,  H04N21/2668 ,  H04N21/812

Abstract: Embodiments of the present invention disclose a method, an apparatus and a system for playing a targeted advertisement. An access switch receives an IGMP join packet sent by a user end, snoops the IGMP join packet, and obtains a first mapping relationship; establishes a first multicast forwarding entry according to the first mapping relationship and a pre-saved second mapping relationship between the access port and a virtual local area network of a targeted advertisement user group; and receives an advertisement media stream sent by an access router, and forwards the advertisement media stream to the targeted advertisement user group by using the access port corresponding to the virtual local area network of the targeted advertisement user group according to the first multicast forwarding entry. In this way, the problems that placing precision of a region-targeted advertisement is low and audience rating is poor in the prior art is solved.

Abstract translation: 本发明的实施例公开了用于播放目标广告的方法，装置和系统。 接入交换机收到用户端发送的IGMP加入报文，窥探IGMP加入报文，获取第一个映射关系; 根据第一映射关系和目标广告用户组的接入端口和虚拟局域网之间预先保存的第二映射关系建立第一组播转发表项; 并接收由接入路由器发送的广告媒体流，并且根据第一组播转发表项，使用与目标广告用户组的虚拟局域网对应的接入端口，将广告媒体流转发给目标广告用户组。 这样就解决了现有技术中针对区域定向广告的精度偏低，受众评价差的问题。