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公开(公告)号：US20190238930A1
公开(公告)日：2019-08-01
申请号：US16376425
申请日：2019-04-05
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jie Xiong , Li Xue , Yihong Huang , Youqing Yang
IPC: H04N21/442 , H04N21/647 , H04N21/6437 , H04N21/44
CPC classification number: H04N21/442 , H04N17/00 , H04N17/004 , H04N21/44008 , H04N21/6437 , H04N21/64792
Abstract: A video quality assessment method and device are provided. The method includes: obtaining a video quality assessment parameter of a to-be-assessed video, where the video quality assessment parameter of the to-be-assessed video includes an average packet loss gap of the to-be-assessed video; determining packet loss dispersion of the to-be-assessed video based on the video quality assessment parameter of the to-be-assessed video; and determining quality of the to-be-assessed video based on a packet loss rate of the to-be-assessed video, an average consecutive packet loss length of the to-be-assessed video, the packet loss dispersion of the to-be-assessed video, and attribute information of the to-be-assessed video. In the technical solution, during video quality assessment, impact of packet loss distribution indicated by the packet loss dispersion on the video quality is considered. Therefore, video quality assessment accuracy can be improved.
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公开(公告)号：US11483495B2
公开(公告)日：2022-10-25
申请号：US17180568
申请日：2021-02-19
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Inventor： Jinhui Zhang , Jie Xiong , Ji Li , Wenbin Liu
Abstract: Disclosed are a method, an apparatus, and a system for implementing video stream switching. The method can determine switching reference information of a first reference frame trailer packet of a first video stream and switching reference information of a second reference frame trailer packet of a second video stream, when receiving a switching instruction; and switch from the first video stream sent through the target egress port to the second video stream based on the switching reference information of the first switching packet and the switching reference information of the second switching packet. Because locations of data packets sent before and after switching are considered during video stream switching, damage caused by a switching operation to a transmitted video image can be effectively reduced.
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公开(公告)号：US11374681B2
公开(公告)日：2022-06-28
申请号：US16664194
申请日：2019-10-25
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jie Xiong , Yanfang Zhang , Ligang Feng , Jian Cheng
IPC: H04L1/00 , H04N19/154 , H04N19/89 , H04N17/00
Abstract: A video quality assessment method and device are provided. The video quality assessment method includes: obtaining a to-be-assessed video, where the to-be-assessed video includes a forward error correction (FEC) redundancy data packet; when a quantity of lost data packets of a first source block in the to-be-assessed video is less than or equal to a quantity of FEC redundancy data packets of the first source block, generating a first summary packet for a non-lost data packet of the first source block, and generating a second summary packet for a lost data packet of the first source block; and calculating a mean opinion score of video (MOSV) of the to-be-assessed video based on the first summary packet and the second summary packet. The MOSV calculated according to the method is more consistent with real video experience of a user, so accuracy of video quality assessment can be improved.
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公开(公告)号：US11368634B2
公开(公告)日：2022-06-21
申请号：US17402110
申请日：2021-08-13
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jie Xiong , Jinhui Zhang , Chao Liu
IPC: H04N7/173 , H04N5/268 , G10L25/57 , H04N21/242 , H04N21/43 , H04N21/8547
Abstract: A switching device determines a video parameter value of a switching point of a first video stream, and determines a video parameter value of a switching point of a second video stream. The video parameter value includes a timestamp and/or a sequence number. The switching device determines an audio parameter value of a switching point of a first audio stream based on a timestamp of the switching point of the first video stream, and determines an audio parameter value of a switching point of a second audio stream based on a timestamp of the switching point of the second video stream. The audio parameter value includes a timestamp and/or a sequence number. The switching device performs switching based on determined switching points.
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Patent Agency Ranking
公开(公告)号：US20210127176A1
公开(公告)日：2021-04-29
申请号：US17139247
申请日：2020-12-31
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jie Xiong , Youqing Yang , Qiujie Fu
IPC: H04N21/647 , H04N21/24 , H04N21/643 , H04N17/00 , H04N21/6437 , H04N21/6405 , H04L29/06 , H04N21/234 , H04N21/44
Abstract: A video service quality assessment method and apparatus, where a monitoring device is configured to: obtain an identifier of a to-be-monitored channel, an identifier of to-be-monitored user equipment, and configuration information of a video service transmission system; obtain a multicast video stream of the to-be-monitored channel based on the identifier of the to-be-monitored channel; obtain a retransmitted video stream based on the identifier of the to-be-monitored channel, the identifier of the to-be-monitored user equipment, and the configuration information of the video service transmission system; determine a to-be-assessed video stream based on the multicast video stream and the retransmitted video stream; parse the to-be-assessed video stream; and obtain an assessment result based on a parsing result and the configuration information of the video service transmission system.
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公开(公告)号：US20200351549A1
公开(公告)日：2020-11-05
申请号：US16931938
申请日：2020-07-17
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jie Xiong , Li Xue , Yihong Huang , Youqing Yang
IPC: H04N21/442 , H04N21/6437 , H04N17/00 , H04N21/44 , H04N21/647
Abstract: A video quality assessment method includes obtaining a video quality assessment parameter of a to-be-assessed video, where the video quality assessment parameter of the to-be-assessed video includes an average packet loss gap of the to-be-assessed video, determining packet loss dispersion of the to-be-assessed video based on the video quality assessment parameter of the to-be-assessed video, and determining quality of the to-be-assessed video based on a packet loss rate of the to-be-assessed video, an average consecutive packet loss length of the to-be-assessed video, the packet loss dispersion of the to-be-assessed video, and attribute information of the to-be-assessed video.
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公开(公告)号：US20200220657A1
公开(公告)日：2020-07-09
申请号：US16821986
申请日：2020-03-17
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Chen Zheng , Liang Ma , Jie Xiong , Xin Zeng , Xiaojian Liu , Yuejun Wei
Abstract: This application discloses an information processing method. A communication device obtains an input sequence. The input sequence has a quantity B of bits. The communication devices transforms the input sequence into one or more code blocks. The communication device encodes each of the code blocks, to obtain one or more encoded code blocks. Each of the code blocks has a code block length less than or equal to a maximum code block length. Each of the code blocks includes a segment of the input sequence, one or more cyclic redundancy check (CRC) bits corresponding to the segment of the input sequence, and one or more filler bits. The encoded code blocks can meet various channel coding requirements.
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公开(公告)号：US09378085B2
公开(公告)日：2016-06-28
申请号：US14104578
申请日：2013-12-12
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jie Xiong , Yuejun Wei , Ying Jin , Qian Zhu
CPC classification number: G06F11/10 , H04L1/0054 , H04L1/203
Abstract: A method for estimating a block error rate and a communication device are applied to the field of communications technologies. The method for estimating a block error rate includes: decoding N received coded code blocks to obtain multiple posterior probabilities APPs, where N is a natural number greater than 1; obtaining, according to the multiple posterior probabilities APPs and a preset policy, a result indicating that the decoding of each coded code block is correct or incorrect, where the preset policy includes: when a sum of absolute values of the multiple APPs is greater than or equal to a preset threshold, the decoding is correct; and obtaining a decoding block error rate according to a result indicating whether the decoding of the N coded code blocks is correct. In this way, the estimation of a decoding block error rate is implemented.
Abstract translation: 用于估计块错误率的方法和通信设备被应用于通信技术领域。 用于估计块错误率的方法包括：解码N个接收到的编码码块以获得多个后验概率APP，其中N是大于1的自然数; 根据多个后验概率APP和预设策略，获得指示每个编码代码块的解码正确或不正确的结果，其中预设策略包括：当多个APP的绝对值之和大于或等于 等于预设阈值，解码正确; 以及根据指示所述N个编码代码块的解码是否正确的结果来获得解码块错误率。 以这种方式，实现了解码块错误率的估计。
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公开(公告)号：US20150006992A1
公开(公告)日：2015-01-01
申请号：US14488168
申请日：2014-09-16
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jie Xiong , Yuejun Wei
CPC classification number: H03M13/1108 , G06F11/1004 , H03M13/09 , H03M13/2957 , H03M13/2966 , H03M13/3707 , H03M13/451 , H03M13/613
Abstract: Embodiments of the present invention provide a method and a decoder for processing decoding. The method includes: acquiring a combined generator matrix Gcom of a Turbo code generator matrix Gturbo and a cyclic redundancy check CRC generator matrix Gcrc, and acquiring a log likelihood ratio sequence outputted by a Turbo code decoder; and performing CRC-assisted iterative ordered statistics decoding of a Turbo code by using the combined generator matrix Gcom and the log likelihood ratio sequence, so as to obtain a decoding processing result. A decoding performance gain can be improved by using the method and the device for decoding a Turbo code provided in the embodiments of the present invention.
Abstract translation: 本发明的实施例提供了一种用于处理解码的方法和解码器。 该方法包括：获取Turbo码生成矩阵Gturbo的组合生成矩阵Gcom和循环冗余校验CRC生成矩阵Gcrc，并获取Turbo码解码器输出的对数似然比序列; 并通过使用组合的生成矩阵Gcom和对数似然比序列来执行Turbo码的CRC辅助迭代排序统计解码，以获得解码处理结果。 通过使用本发明实施例中提供的用于解码Turbo码的方法和装置，可以提高解码性能增益。
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