Abstract: This application provides a communication method and apparatus, and relates to the communication field. The method includes: generating a physical layer protocol data unit PPDU, where the PPDU includes a first field indicating that the PPDU is an extremely high throughput sounding null data packet EHT sounding NDP transmitted based on orthogonal frequency division multiple access OFDMA, the PPDU further includes an extremely high throughput-long training field EHT-LTF and a packet extension PE field, and the PE field is adjacent to the EHT-LTF; and sending the PPDU. In this way, a Bfee may determine, based on the first field in the PPDU, that the PPDU is the EHT sounding NDP transmitted based on OFDMA, perform channel estimation by using the PPDU, and feed back channel state information to a Bfer, to implement functions such as beamforming and resource scheduling for OFDMA transmission, thereby improving channel quality and a throughput.

Abstract: Disclosed is the technology for normalizing media object metadata. The technology receives a plurality of web documents from web servers. The web documents reference one or more media objects. Then the technology extracts content tags from the web documents, wherein the content tags relate to contents of the media objects. The technology determines a set of media object metadata based on the content tags. The set of media object metadata provides a consistent way of describing the contents of the media objects. For at least some of the media objects, the technology stores the set of media object metadata and the values associated with the media object metadata in a media content database.

Abstract: Disclosed are the method and apparatus for pre-caching contents of online media objects. A proxy running on a computing device determines a first media object that a media navigation application running on the computing device is playing and one or more second media objects that relates to the first media object. The proxy retrieves from one or more content servers data of the first media object and the one or more second media objects on behalf of the media navigation application. The proxy stores the data of the first media object and the one or more second media objects in a buffer of the computing device, and satisfy a data request for the first media object or the one or more second media objects from the media navigation application by supplying the data stored in the buffer to the media navigation application.

Abstract: Disclosed are the method and apparatus for collecting and analyzing media content metadata. The technology retrieves web documents referencing media objects from web servers. Metadata of the media objects such as global tags and category weight values are generated from the web documents. Affinity values between user identities and the media objects are generated based on online behaviors of the users interacting with the media objects. Based on the affinity values and metadata of the media objects, the technology can provide recommendations of media objects.

Abstract: Disclosed are the method and apparatus for recommending media objects based on media object metadata. The technology generates media content metadata that relate to contents of a plurality of media objects from a plurality of web documents. The web documents reference one or more of the media objects. The technology further determines feature vectors of the media objects. The elements of the feature vectors comprise values of the media content metadata. The technology then calculates a distance in a feature vector space between a first feature vector of a first media object of the media objects and a second feature vector of a second media object of the media objects, and transmits a recommendation of the second media object based on the distance between the first and second feature vectors.

Abstract: Disclosed are the technology for seamless media navigation. A computing device according to the technology includes a processor, a network interface, a input device (e.g. touch screen) and a media navigation module. The network interface communicates with multiple media servers. The input device generates user input signals of swipe motions. The media navigation module configured, when executed by the processor, to perform a process. The process includes playing a first media object, gradually switching from playing the first media object to playing multiple media objects including the first media object based on a first swipe motion; and gradually switching from playing the multiple media objects to playing one individual media object of the media objects based on a second swipe motion subsequent to the first swipe motion.