Protocols for location services are disclosed. For example, a method for a positioning protocol for first and second devices may comprise, at the first device: creating a message for the protocol at the first device, where the message comprises a set of included parameters from a plurality of allowed parameters, encoding the message by embedding each of the included parameters in an encoded string, and transmitting the encoded message to the second device. Similarly, a method for such a positioning protocol may comprise, at a second device receiving a message for the protocol transmitted by the first device, where the message comprises the included parameters, with each included parameter embedded in an encoded string, and decoding the message by decoding a subset of the plurality of included parameters and omitting decoding of included parameters that are not in the subset.

This application discloses a method, an apparatus, a device, and a system for transmitting network layer reachability information, and a medium, and pertains to the communication field. The method includes: obtaining a border gateway protocol BGP message, where the BGP message includes first NLRI that is for advertising a first route, the first NLRI includes a first field set and first indication information, the first field set carries necessary routing information of the first route, and the first indication information indicates that the first NLRI does not include a first field in a second field set, where each field in the second field set carries optional routing information of the first route, and the second field set does not include the first indication information; and sending the BGP message to a second communication apparatus. This application can improve route transmission efficiency.

This application discloses a method, an apparatus, a device, and a system for transmitting network layer reachability information, and a medium, and pertains to the communication field. The method includes: obtaining a border gateway protocol BGP message, where the BGP message includes first NLRI that is for advertising a first route, the first NLRI includes a first field set and first indication information, the first field set carries necessary routing information of the first route, and the first indication information indicates that the first NLRI does not include a first field in a second field set, where each field in the second field set carries optional routing information of the first route, and the second field set does not include the first indication information; and sending the BGP message to a second communication apparatus. This application can improve route transmission efficiency.

Methods, systems, and devices for determining a subset of users from among a set of users based on a set of received information associated with a photograph, where the disposition of the information is used to first determine the subset and then perform facial recognition on the subset of photographs for each user in order to accurately identify each user or users present in the photograph.

Methods, systems, and devices for determining a subset of users from among a set of users based on a set of received information associated with a photograph, where the disposition of the information is used to first determine the subset and then perform facial recognition on the subset of photographs for each user in order to accurately identify each user or users present in the photograph.

Message encoding and decoding methods, a processing device, and a storage medium are disclosed. The method includes generating a request message, wherein the request message includes an attribute message and a content message, the attribute message includes a message identifier, a message direction, a message timeout state, a message processing state, and a message termination state, the content message includes at least a first type of content message and a second type of content message, and the attribute message is used to process the request message; and sending at least the content message and the message direction.

Message encoding and decoding methods, a processing device, and a storage medium are disclosed. The method includes generating a request message, wherein the request message includes an attribute message and a content message, the attribute message includes a message identifier, a message direction, a message timeout state, a message processing state, and a message termination state, the content message includes at least a first type of content message and a second type of content message, and the attribute message is used to process the request message; and sending at least the content message and the message direction.

A transcoding method used in a computer network comprises: receiving, by a task manager in the computer network, a transcoding task, where the transcoding task has task information; generating task dispatch information according to the task information; and separately acquiring, according to the task dispatch information, source data of media segments corresponding to a media file, parallelly transcoding the source data into data in a target format by using multiple transcoders, and storing the data into a storage server in the computer network, where the transcoder includes a processor of the storage server. Distributed transcoding is completed by using an idle CPU of a storage server, so that not only costs of hardware are reduced and an existing resource is fully used, but also transmission and copying of data are greatly accelerated, thereby improving transcoding efficiency.

A method, including obtaining a first protocol descriptor according to a protocol header field of an input packet, and further according to a preset protocol field mapping relationship, where the first protocol descriptor corresponds to the protocol header field of the input packet, and where the preset protocol field mapping relationship comprises a mapping relationship between the first protocol descriptor and the protocol field of the input packet, obtaining a second protocol descriptor according to the first protocol descriptor, obtaining, according to the preset protocol field mapping relationship and the second protocol descriptor, a second protocol header field, and obtaining an output packet, where the output packet comprises the second protocol header field.

Aspects of the disclosure provide an apparatus having a processing circuit and a transceiver. The processing circuit is configured to generate a frame to have an extended subtype under a control type, configure a media access control (MAC) header of the frame to indicate an extended control frame format, and configure a field of the frame to be an extended subtype field according to the extended control frame format to carry an identification for the extended subtype. The extended subtype is defined in addition to a plurality of subtypes that are identifiable using a subtype field in the frame according to a control frame format. The transceiver is configured to transmit signals to carry the frame.