Huawei Technologies Co., Limited

Foxconn Technology Co., Ltd.

Fu Zhun Precision Industry (shen Zhen) Co., Ltd.

Zte Corporation

Honor Device Co., Ltd.

Bing Chen

Xue-Wen Peng

Qingpeng Xie

Shan Gao

Lina Sun

Lei Zhang

Yu Wang

Hsieh-Kun Lee

Rui-Hua Chen

Ming Zhao

Xiaowei Liu

Bingfu Wang

Changquan Ai

Jun-Hai Li

Junwei Zhou

Yadong Lu

Zhao Zuo

Weie Zhang

Junhong He

Guoyi Wang

Junhong Jin

The present invention discloses a method for measuring user quality of experience QoE, where the method includes the following steps: receiving event information sent by a receiving end, where the event information includes condition information for determining a cause for shortage of valid media data in a buffer of the receiving end; determining, according to the condition information, whether the shortage of the valid media data in the buffer of the receiving end is caused by a service system or caused by a user's action; and measuring QoE decrease degrees according to different causes for the shortage of the valid media data in the buffer, respectively. In the method for measuring QoE according to embodiments of the present invention, shortage of valid media data in a buffer of a receiving end caused by a service system problem and shortage of valid media data in the buffer of the receiving end caused by a user's action are distinguished, and QoE decrease degrees are measured according to different causes for the shortage of the valid media data in the buffer, respectively, so that QoE is measured more accurately and more objectively, and network resources can be used properly.

Method and apparatus for measuring user quality of experience QOE

A method and an apparatus for determining a buffer status of user equipment (UE), where the method includes acquiring media information of each transmission control protocol (TCP) packet sent to UE, receiving an acknowledgment packet sent by the UE, and determining, according to the acknowledgment packet and the media information of each TCP data packet, a media period of time during which data received by the UE can be continuously played.

Method and apparatus for determining buffer status of user equipment

A method, an apparatus and a system for acquiring media service parameter indication are disclosed. In an embodiment the method includes acquiring, by a gateway GPRS support node (GGSN) or a packet data network gateway (PGW), a media service flow configuration parameter indication, wherein the media service flow configuration parameter indication comprises at least one of the following: a data packet sequence number, a current connection status, media information, or media play time and sending, by the GGSN or the PGW, the media service flow configuration parameter indication to a serving GPRS support node (SGSN) or a serving gateway (SGW). The method further includes sending, by the SGSN or the SGW, the media service flow configuration parameter indication to a radio access network (RAN) and acquiring, by the RAN, the media service flow configuration parameter indication.

Method, apparatus, and system for acquiring media service parameter indication

A Hypertext Transfer Protocol (HTTP)-based buffer status updating method, device and a buffer status processor are provided, where the method includes, receiving an HTTP request from a terminal, triggering a buffer event according to the HTTP request, where the buffer event includes seek, pause, resume, and stream switch, and the method further includes updating a buffer status according to the buffer event, where the buffer status includes a normal play state, a play paused state, a re-buffering state, and a stream switch state. Hence, the buffer status is updated based on the buffer event in a manner of analyzing only an HTTP Protocol field such that a buffer model is closer to a real client buffer situation.

HTTP-based buffer status updating method and device, and buffer status processor

A method for evaluating streaming media transmission quality is provided. Initial playback delay information is obtained, and a subjective experience variation value of a user terminal is calculated according to the initial playback delay information, so as to evaluate streaming media transmission quality. The method includes: monitoring a Transmission Control Protocol (TCP) connection established with a user terminal; obtaining initial playback delay information if it is detected that the TCP connection established with the user terminal is a streaming media service connection; and calculating a subjective experience variation value of the user terminal according to the initial playback delay information. A device for evaluating streaming media transmission quality, a method for obtaining streaming media information, and a related device and system are also provided.

Method for evaluating streaming media transmission quality and obtaining information, and related device and system

A method and an apparatus are provided for evaluating media delivery quality that relate to the field of communications technologies and that can directly reflect a variation of media delivery quality and a variation of subjective experience of a user on media play quality. A method for evaluating media delivery quality includes: receiving media data, and measuring a data amount of the media data received within the period of time; parsing the media data, and acquiring a play rate of the media data; simulating, a decoding buffer in a process of playing the media data received within the period of time, to acquire a virtual decoding buffer and acquire a size of the virtual decoding buffer; and determining, according to the size of the virtual decoding buffer, whether a pause occurs in the process of playing the media data received within the period of time.

Method and apparatus for evaluating media delivery quality

The present invention discloses a method for measuring user quality of experience QoE, where the method includes the following steps: receiving event information sent by a receiving end, where the event information includes condition information for determining a cause for shortage of valid media data in a buffer of the receiving end; determining, according to the condition information, whether the shortage of the valid media data in the buffer of the receiving end is caused by a service system or caused by a user's action; and measuring QoE decrease degrees according to different causes for the shortage of the valid media data in the buffer, respectively.

Method and apparatus for measuring user quality of experience QoE

Embodiments of the present invention provide a buffer state estimation method and device. The method includes: obtaining a first continuous play duration corresponding to media data received by a terminal in a period of the present state estimation; calculating a second continuous play duration corresponding to media data in a current buffer according to a buffer state before the present state estimation and the first continuous play duration; and performing state estimation on the buffer according to the buffer state before the present state estimation, preset buffer configuration parameters and the second continuous play duration, and obtaining the present buffer state and start time and duration of the present buffer state, where the buffer state includes at least one of an initial buffering state, a normal play state, a rebuffering state, a play stop state and a play pause state.

Buffer state estimation method and device

Embodiments of the present invention provide a method for retransmission based on forward error correction. The method includes: when received source data packets loss occurs, judging whether all of the lost source data payloads can be decoded by using the received source data payloads and check data; if all of the lost source data payloads cannot be decoded, determining needed source data symbols for decoding all of the lost source data payloads by using the received source data payloads and the check data; and requesting for retransmitting the needed source data symbols.

Method, device and communication system for retransmission based on forward error correction

A method and system for generating electronic program guides is provided. The method comprises: sharing Electronic Program Guides (EPG) data among at least one terminal and at least two service providers (SPs) interconnected over network; searching the shared EPG data; and generating EPG for the terminal according to the searched EPG data and the customization information provided by the terminal. The system comprises at least two SPs and at least one terminal interconnected over network, where at least two SPs of the at least two SPs are provided with a middleware, and EPG data is shared among SPs or between SPs and terminals through the middleware, and at least one terminal of the at least one terminal is provided with a middleware. In embodiments of the present invention, an individualized EPG is generated according to requirements of a terminal by sharing EPG data and summarizing EPG data from a plurality of SPs.

System and method for generating electronic program guides

A vapor chamber heat sink attached to a heat-generating electronic component includes a base () defining an opening therein. A plurality of fins () is mounted on the base. A heat pipe () thermally connects the electronic component and the fins. The heat pipe comprises a plate-type lower portion () contacting a bottom surface of the base and a bottom surface () of the fins and overlaying a top surface of the electronic component, a plate-type upper portion () parallel to the lower portion contacting a top surface () of the fins, and a connecting portion () interconnecting opposite two ends of the lower and upper portions. The heat pipe is configured in such a manner so as to enhance contact area and thermal conductivity between the heat pipe and the electronic component and between the heat pipe and the fins.

Vapor chamber heat sink

A heat dissipation device includes a base, a first and second fin sets on the base, and a fan located atop the first and second fin sets. The base has a first face for contacting with an electronic device, and two sloped faces extending from the first face and toward each other. The first fin set defined a channel receiving the base therein. A plat extends from an end of the first face of the base. The second fin set is arranged on the plat of the base. The first face of the base has two grooves defined therein. A retaining member is attached to the first face of the base and has two retaining bars thereof fitted in the two grooves of the first face, respectively.

Heat dissipation device

A heat dissipation device cooling a power adapter () includes first and second heat dissipation units (), (), at least one heat pipe () connecting the first and second heat dissipation units and a plurality of positioning elements () securing the first and second heat dissipation units on the power adapter. The positioning elements extend through the first heat dissipation unit and bottom ends of the positioning elements are screwed into the second heat dissipation unit. Top ends of the positioning elements are secured to the first heat dissipation unit. Therefore, the power adapter is tightly sandwiched between the first heat dissipation unit and the second heat dissipation unit by the positioning elements. Spring forces are exerted by the positioning elements on the first heat dissipation unit toward the second heat dissipation unit.

A heat dissipation device is to be mounted in a computer enclosure for dissipating heat generated by a VGA card (). The heat dissipation device includes a heat sink (), a fan () and a fan duct () connecting the heat sink () and the fan (). The heat sink () contacts a heat-generating device () of the VGA card. The fan () has an inlet port () and an outlet port (). The outlet port () communicates with an ambient air outside the computer enclosure. The fan duct () has two open ends (). One open end () engages with the heat sink () and the other open end () engages with the inlet port () of the fan ().

Heat dissipation device for computer add-on cards

A heat dissipation device for being installed to and cooling an electronic card device () includes first and second heat dissipation units () and at least one heat pipe (). The heat dissipation units each include a base plate () and a fin plate () engaged with the base plate. The at least one heat pipe includes an evaporating segment () received between the base plate and the fin plate of the first heat dissipation unit, and a condensing segment () received between the base plate and the fin plate of the second heat dissipation unit, thereby connecting the first and second heat dissipation units together. The evaporating segment and the condensing segment of the at least one heat pipe are movably received in the first and second heat dissipation units respectively before the heat dissipation device is installed to the electronic card device and dissipating heat generated therefrom, and are firmly secured in the first and second heat dissipation units respectively after the heat dissipation device is installed to the electronic card device and dissipate heat generated therefrom.

Growing community of inventors

Shenzhen, China

Bing Chen